Carbonate rock rare earth element content in-situ analysis method and device
By grinding and carbon coating treatment of carbonate rock samples, combined with electronic probes and laser erosion-plasma mass spectrometer detection, the problem of inaccurate detection of rare earth elements in carbonate rocks is solved, and higher detection accuracy is achieved.
Patent Information
- Application Number
- CN202510005067.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-02
- Publication Date
- 2025-08-08
AI Technical Summary
The detection results of rare earth elements in carbonate rocks in the prior art are inaccurate, which may be due to the inclusion of cement or non-carbonate minerals during drilling and incomplete dissolution.
By grinding and carbon coating the carbonate rock samples, the calcium and magnesium contents were detected by using an electronic probe, the main trace and rare earth element content of a single carbonate mineral were detected by using a laser erosion-plasma mass spectrometer, and the calcium element was used as an internal standard for data processing to avoid acid dissolution.
It improves the accuracy of the detection results, reduces the impact of mixed components or non-carbonate rock components on the detection results, and ensures the accuracy of the content of rare earth elements.
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Figure CN120446252A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of geology, and in particular to a method and equipment for in-situ analysis of rare earth element content in carbonate rocks. Background Art
[0002] Carbonate rocks are sedimentary rocks composed of carbonate minerals. By studying the content and distribution characteristics of rare earth elements in carbonate rocks, we can trace the deposition and diagenetic history of carbonate rocks, infer the redox conditions of the ancient ocean, and accurately reconstruct the ancient ocean sedimentary environment.
[0003] Prior art methods for analyzing and testing rare earth elements in carbonate rocks involve drilling carbonate rock powder to obtain a carbonate rock sample, dissolving the carbonate rock sample with varying concentrations of nitric acid, hydrochloric acid, or acetic acid, and testing the dissolved carbonate rock sample using inductively coupled plasma mass spectrometry to determine the rare earth element content in the carbonate rock sample. However, the drilling process for carbonate rock powder may introduce cement or non-carbonate minerals. Furthermore, the dissolution process may result in incomplete dissolution of the carbonate rock sample, or incomplete dissolution of the carbonate rock sample and a small amount of non-carbonate rock components, leading to inaccurate results for the rare earth element content in the carbonate rock.
[0004] Based on this, in the prior art, there is a problem of inaccurate detection results of rare earth element content in carbonate rocks. Summary of the Invention
[0005] The present application provides a method and apparatus for in-situ analysis of rare earth element content in carbonate rocks, which is used to solve the problem of inaccurate detection results of rare earth element content in carbonate rocks in the prior art.
[0006] In a first aspect, the present application provides an in-situ analysis method for rare earth element content in carbonate rocks, comprising:
[0007] Obtaining carbonate rock samples, wherein the carbonate rock samples come from a variety of rock morphologies or compositions;
[0008] Performing sample pretreatment on the carbonate rock sample to obtain a sample to be analyzed;
[0009] Detect the calcium and magnesium content of the sample to be analyzed;
[0010] Detect the major, trace and rare earth element content of individual carbonate minerals on the sample to be analyzed;
[0011] The calcium content was used as an internal standard to process the data of major, trace and rare earth element contents of individual carbonate minerals to obtain the rare earth and yttrium content of individual carbonate minerals.
[0012] In one possible embodiment, detecting the major, trace and rare earth element content of a single carbonate mineral on a sample to be analyzed includes:
[0013] Laser ablation-inductively coupled plasma mass spectrometry (LAP-IMS) was used to detect the major, trace and rare earth element contents of individual carbonate minerals in the sample to be analyzed.
[0014] In one possible embodiment, detecting the calcium content and magnesium content of the sample to be analyzed includes:
[0015] The calcium and magnesium contents of the sample to be analyzed were detected using an electron probe under the working conditions of an accelerating voltage of 15 kV, a beam current of 10 nA, and a beam spot size of 8 μm.
[0016] In one possible embodiment, a carbonate rock sample is pre-processed to obtain a sample to be analyzed, including:
[0017] The carbonate rock sample was ground into a thin slice with a thickness of 100 μm, and the thin slice was mechanically polished to obtain a polished thin slice;
[0018] The polished slices were carbon coated to obtain samples to be analyzed.
[0019] In one possible embodiment, after processing the data of the major, trace and rare earth element contents of a single carbonate mineral using the calcium content as an internal standard to obtain the rare earth and yttrium element contents of the single carbonate mineral, the method further includes:
[0020] Analyze rare earth elements to obtain the corresponding relationship between rare earth types and rare earth elements;
[0021] Using the preset rock type as the standard, the rare earth element standardization treatment is carried out to obtain the standardized treatment results;
[0022] Determine the rare earth and yttrium content of individual carbonate minerals, and the correspondence between rare earth types and rare earth elements, based on the correspondence between rare earth types and rare earth elements and the results of standardization processing;
[0023] The rare earth and yttrium element distribution characteristics of carbonate rock samples are determined based on the rare earth and yttrium element content, rare earth type and the correspondence between rare earth elements in individual carbonate rock minerals.
[0024] In a possible implementation, the correspondence between rare earth types and rare earth elements includes:
[0025] If the rare earth type is light rare earth, the corresponding rare earth elements are lanthanum, cerium, praseodymium and neodymium;
[0026] If the rare earth type is medium rare earth, the corresponding rare earth elements are samarium, europium, gadolinium, terbium, dysprosium and holmium;
[0027] If the rare earth type is heavy rare earth, the corresponding rare earth elements are erbium, thulium, ytterbium and lutetium.
[0028] In one possible embodiment, after determining the rare earth and yttrium element distribution characteristics of the carbonate rock sample based on the rare earth and yttrium element contents, the rare earth type and the correspondence between the rare earth elements of the individual carbonate rock minerals, the method further includes:
[0029] The original sedimentary signal of the carbonate rock sample is determined based on the rare earth and yttrium element distribution characteristics of the carbonate rock sample.
[0030] In a second aspect, the present application provides an in-situ analysis device for rare earth element content in carbonate rocks, comprising:
[0031] at least one processor; and a memory communicatively coupled to the at least one processor;
[0032] The memory stores instructions that can be executed by at least one processor, and the instructions are executed by at least one processor so that the at least one processor can execute the first aspect and / or various possible implementations of the first aspect as described above.
[0033] In a third aspect, the present application proposes a computer-readable storage medium, which stores computer-executable instructions. When the computer-executable instructions are executed by a processor, they are used to implement the first aspect and / or various possible implementation methods of the first aspect as described above.
[0034] In a fourth aspect, the present application proposes a computer program product, comprising a computer program, which, when executed by a processor, implements the above first aspect and / or various possible implementations of the first aspect.
[0035] This application provides a method and apparatus for in-situ analysis of rare earth element content in carbonate rocks. The method involves obtaining carbonate rock samples of various rock forms and pre-treating them to obtain samples to be analyzed. The method then tests the calcium and magnesium contents of the samples to be analyzed. The method also tests the major, trace, and rare earth element contents of individual carbonate minerals in the samples to be analyzed. The method eliminates the need for acid dissolution, effectively reducing the impact of mixed components or non-carbonate rock components on the test results. Using calcium content as an internal standard, data processing is performed on the major, trace, and rare earth element contents of individual carbonate minerals to determine the rare earth and yttrium contents of the individual carbonate minerals, improving the accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS
[0036] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.
[0037] Figure 1 Schematic diagram of the process of in-situ analysis of rare earth element content in carbonate rocks provided in this application Figure 1 ;
[0038] Figure 2 A schematic diagram of the process of in-situ analysis of rare earth element content in carbonate rocks Figure 2 ;
[0039] Figure 3 Schematic diagram of the rare earth and yttrium content of individual carbonate minerals;
[0040] Figure 4 A schematic diagram of the process of in-situ analysis of rare earth element content in carbonate rocks Figure 3 ;
[0041] Figure 5 This is a schematic diagram of the structure of an in-situ analysis device for rare earth element content in carbonate rocks provided in this application;
[0042] Figure 6 This is a schematic structural diagram of an in-situ analysis device for rare earth element content in carbonate rocks provided in this application.
[0043] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION
[0044] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
[0045] It should be noted that the information (including but not limited to device information, geographic information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant laws, regulations and standards, and provide corresponding operation entrances for users to choose to authorize or refuse.
[0046] Rare earth elements refer to the lanthanide elements, scandium (Sc) and yttrium (Y) in the periodic table. By exploring the rare earth elements in widely distributed carbonate rocks, we can obtain information on the sedimentary environment and fluid sources, infer the redox conditions of the ancient ocean, and accurately reconstruct the ancient ocean sedimentary environment.
[0047] In the existing technology, there are certain interferences in the process of exploring rare earth elements in carbonate rocks. For example, in the process of drilling carbonate rock powder, cement or non-carbonate rock minerals may be mixed in; and in the dissolution process, there may be incomplete dissolution of carbonate rock samples, or full dissolution of carbonate rock samples and a small amount of non-carbonate rock components, resulting in inaccurate rare earth element content detection results in carbonate rocks.
[0048] Based on this, in the prior art, there is a problem of inaccurate detection results of rare earth element content in carbonate rocks.
[0049] In order to solve the above problems, the core concept of this application is: to obtain carbonate rock sample slices by grinding and sampling, and to perform carbon coating treatment, and to use an electron probe to determine the calcium content and magnesium content of the sample to be analyzed; to detect the main, trace and rare earth element contents of individual carbonate minerals on the sample to be analyzed, and to avoid acid dissolution operation on the sample to be analyzed, thereby reducing the influence of mixed components or non-carbonate rock components on the test results, and to use the calcium content as an internal standard, and to perform data processing on the main, trace and rare earth element contents of individual carbonate minerals to obtain the rare earth and yttrium content of individual carbonate rock minerals, thereby improving the accuracy of the test results.
[0050] The following specific embodiments describe in detail the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.
[0051] Figure 1 Schematic diagram of the process of an in-situ analysis method of rare earth element content in carbonate rocks provided in the embodiment of this application Figure 1 ,like Figure 1 As shown, the method includes:
[0052] S101. Obtain carbonate rock samples, wherein the carbonate rock samples come from a variety of rock forms or components.
[0053] In this embodiment, carbonate rock samples of various rock morphologies include: microbial dolomite, fascicular-negative ductile dolomite cement, fascicular-positive ductile and radial-positive ductile dolomite cement, oolitic limestone, spherical limestone, clotted limestone, granular limestone, micritic limestone, clastic limestone, and biological structures (such as coral reefs or algae mats).
[0054] For example, Ediacaran carbonate rock samples are obtained from the site to be tested (Sichuan Basin), wherein the carbonate rock samples at the site to be tested include microbial dolomite, bundled-negative ductile dolomite cement, bundled positive ductile dolomite cement, and radial positive ductile dolomite cement, and the corresponding number of sample tests and analyses are 4, 13, and 15, respectively.
[0055] S102: Pre-process the carbonate rock sample to obtain a sample to be analyzed.
[0056] Optionally, the carbonate rock sample is subjected to sample pretreatment to obtain a sample to be analyzed, including:
[0057] The carbonate rock sample was ground into a thin slice with a thickness of 100 μm, and the thin slice was mechanically polished to obtain a polished thin slice.
[0058] In this embodiment, for example, the obtained microbial dolomite, bundle-negative ductility dolomite cement, bundle-positive ductility and radial-positive ductility dolomite cements are respectively ground to obtain carbonate rock sample slices with a thickness of 100 μm. The carbonate rock sample with a thickness of 100 μm includes a thin slice of microbial dolomite, a bundle-negative ductility dolomite cement with a thickness of 100 μm, and a bundle-positive ductility and radial-positive ductility dolomite cement with a thickness of 100 μm.
[0059] Mechanical grinding refers to the process of grinding, polishing or finishing a carbonate rock sample slice with a thickness of 100 μm by mechanical means, so as to make the surface of the carbonate rock sample slice with a thickness of 100 μm flat, improve the smoothness, and reduce external impurities.
[0060] The polished slices were carbon coated to obtain samples to be analyzed.
[0061] In this embodiment, a carbon coating can be provided for the carbonate rock sample slice by vacuum evaporation or sputtering, so that the carbonate rock sample slice has good electrical conductivity, thereby obtaining accurate images and data in scanning electron microscope analysis.
[0062] S103. Detecting the calcium content and magnesium content of the sample to be analyzed.
[0063] Optionally, detecting the calcium content and magnesium content of the sample to be analyzed includes:
[0064] The calcium and magnesium contents of the sample to be analyzed were detected using an electron probe under the working conditions of an accelerating voltage of 15 kV, a beam current of 10 nA, and a beam spot size of 8 μm.
[0065] In this embodiment, the model of the electronic probe may be JXA-8100. The JXA-8100 electronic probe has the functions of high-resolution imaging and quantitative and qualitative element analysis, which can improve the accuracy of the detection results.
[0066] An accelerating voltage of 15kV can excite characteristic X-rays of medium-atomic-number elements such as calcium and magnesium, enabling accurate quantitative analysis. A beam current of 10nA achieves a balance between signal intensity and sample protection, reducing thermal damage and charge accumulation in the sample, and improving the precision and accuracy of the analysis. A beam spot size of 8μm effectively averages out minute surface inhomogeneities in the sample, providing representative compositional analysis results.
[0067] In this embodiment, the type of the sample to be analyzed can be further determined to be dolomite based on the calcium content and magnesium content of the sample to be analyzed.
[0068] S104. Detect the content of major, trace and rare earth elements in individual carbonate minerals on the sample to be analyzed.
[0069] Optionally, the major, trace and rare earth element content of individual carbonate minerals on the sample to be analyzed can be determined, including:
[0070] Laser ablation-inductively coupled plasma mass spectrometry (LAP-IMS) was used to detect the major, trace and rare earth element contents of individual carbonate minerals in the sample to be analyzed.
[0071] In this embodiment, the laser ablation-plasma mass spectrometer may be an Agilent 7500ICP-MS from the United States or a Lambda Physik LPX 120I pulsed laser from Germany.
[0072] When measuring the major, trace, and rare earth element content of individual carbonate minerals in the sample under analysis, National Institute of Standards and Technology (NIST) glass 610 and 612 standards were used as external standards. The laser beam spot size corresponding to the external standards ranged from 65 to 150 μm.
[0073] S105. Using the calcium content as an internal standard, data processing is performed on the major, trace and rare earth element contents of a single carbonate mineral to obtain the rare earth and yttrium element contents of the single carbonate mineral.
[0074] In this embodiment, the calcium content is used as an internal standard to correct the signal fluctuation between a single carbonate mineral in the sample to be analyzed and the standard to ensure the accuracy of the data.
[0075] For example, the calcium content is used as an internal standard, and it is determined that the samples to be analyzed are all pure dolomite, that is, the proportion of CaO is 30.4%.
[0076] The software for data processing of the major, trace and rare earth element contents of a single carbonate mineral can be Glitter software. After data processing by Glitter software, the major, trace and rare earth element contents of a single carbonate mineral are obtained. By comparing the major, trace and rare earth element data with those measured by external standards, the relative deviation range is 0.46% to 6.07%.
[0077] The present invention provides an in-situ analysis method for rare earth element content in carbonate rocks. The method comprises obtaining carbonate rock samples of various forms or components and performing pretreatment to obtain samples to be analyzed. The method then measures the calcium and magnesium contents of the samples to be analyzed. The method then measures the major, trace, and rare earth element contents of individual carbonate minerals in the samples to be analyzed. The method then uses the calcium content as an internal standard to process the major, trace, and rare earth element contents of the individual carbonate minerals to obtain the rare earth and yttrium contents of the individual carbonate minerals. The method eliminates the acid dissolution process, effectively reducing the impact of mixed components or non-carbonate rock components on the test results. This method improves the accuracy of the test results.
[0078] Figure 2 A schematic diagram of the process of in-situ analysis of rare earth element content in carbonate rocks Figure 2 ,exist Figure 1 Based on the embodiment shown, Figure 2 As shown, in the above step S105, after the calcium content is used as an internal standard to process the data of the main trace elements and rare earth element contents of a single carbonate mineral to obtain the rare earth and yttrium element contents of the single carbonate mineral, the method further includes:
[0079] S201, analyzing rare earth elements to obtain a corresponding relationship between rare earth types and rare earth elements;
[0080] Optionally, the correspondence between rare earth types and rare earth elements includes:
[0081] If the rare earth type is light rare earth, the corresponding rare earth elements are lanthanum (La), cerium (Ce), praseodymium (Pr) and neodymium (Nd);
[0082] If the rare earth type is medium rare earth, the corresponding rare earth elements are samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy) and holmium (Ho);
[0083] If the rare earth type is heavy rare earth, the corresponding rare earth elements are erbium (Er), thulium (Tm), ytterbium (Yb) and lutetium (Lu).
[0084] In this embodiment, by analyzing rare earth elements to obtain the corresponding relationship between rare earth types and rare earth elements, the formation and evolution process of rocks and minerals can be studied based on the corresponding relationship between different rare earth types and rare earth elements.
[0085] S202: Using a preset rock type as a standard, perform rare earth element standardization processing to obtain a standardized processing result.
[0086] In this embodiment, the preset rock type may be Queensland mudstone; the rare earth element standardization process is performed, including:
[0087] Obtaining rare earth element abundance data for individual carbonate minerals, as well as rare earth element abundance data for Queensland mudstones;
[0088] Based on the rare earth element abundance data of individual carbonate minerals and the rare earth element abundance data of Queensland mudstone (MuQ), a normalized value is calculated, wherein the normalized value is the ratio of the rare earth element abundance data of the individual carbonate mineral (Sample) to the rare earth element abundance data of the Queensland mudstone;
[0089] Based on the standardized values, a rare earth element distribution pattern diagram is drawn, wherein the rare earth element distribution pattern diagram is the result of standardization processing.
[0090] S203. Determine the rare earth and yttrium content of a single carbonate mineral, and the corresponding relationship between the rare earth type and the rare earth element based on the corresponding relationship between the rare earth type and the rare earth element and the normalization processing result.
[0091] In this embodiment, for example, the rare earth and yttrium content in the microbial dolomite, the bundle-negative ductility dolomite cement, the bundle-positive ductility and the radial-positive ductility dolomite cement is as follows: Figure 3 As shown, Figure 3 The horizontal axis is the rare earth element, and the vertical axis is the standardized value
[0092] S204. Determine the rare earth and yttrium distribution characteristics of the carbonate rock sample based on the rare earth and yttrium content of the individual carbonate rock minerals, and the corresponding relationship between the rare earth type and the rare earth elements.
[0093] In this embodiment, Figure 3It can be seen that the standardized treatment results of erbium, thulium, ytterbium and lutetium are upward, indicating the enrichment of heavy rare earth elements; while the total content of lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium and yttrium is less than 10ppm, indicating a low total amount of rare earth elements; the ratio of chondrites is concentrated between 28 and 36, while the yttrium / holmium ratio of carbonate rock samples is between 50 and 65, which is greater than the ratio of chondrites, indicating the yttrium / holmium ratio of superchondrites; based on this, the rare earth and yttrium element distribution characteristics of carbonate rock samples are low total amount of rare earth elements, enrichment of heavy rare earth elements, and yttrium / holmium ratio of superchondrites.
[0094] After determining the rare earth and yttrium distribution characteristics of carbonate rock samples based on the rare earth and yttrium content, rare earth type and the corresponding relationship between rare earth elements of individual carbonate rock minerals, it also includes:
[0095] S205. Determine the original sedimentary signal of the carbonate rock sample based on the rare earth and yttrium element distribution characteristics of the carbonate rock sample.
[0096] In this embodiment, the original sedimentary signal includes the rare earth and yttrium element distribution characteristics of the carbonate rock sample; through the original sedimentary signal of the carbonate rock sample, the environmental conditions and geological history when the sediment was formed can be accurately reconstructed.
[0097] An embodiment of the present application provides an in-situ analysis method for rare earth element content in carbonate rocks. The method obtains the correspondence between rare earth types and rare earth elements through analysis; performs rare earth element standardization processing using a preset rock type as a standard to obtain a standardized processing result; and determines the rare earth and yttrium element content of a single carbonate rock mineral and the correspondence between rare earth types and rare earth elements and the standardized processing result based on the correspondence between rare earth types and rare earth elements, and further determines the rare earth and yttrium element distribution characteristics of the carbonate rock sample, thereby obtaining an accurate original sedimentary signal of the carbonate rock sample, thereby improving the accuracy of reconstructing the environmental conditions and geological history when the sediment was formed.
[0098] Optionally, Figure 4 A schematic diagram of the process of in-situ analysis of rare earth element content in carbonate rocks Figure 3 , among which, Figure 4 As shown, the method includes S101 to S105, and S201 to S205.
[0099] Figure 5 This is a schematic diagram of the structure of an in-situ analysis device for rare earth element content in carbonate rocks provided in this application, such as Figure 5 As shown, the in-situ analysis device for rare earth element content in carbonate rocks provided in this embodiment includes:
[0100] The acquisition module 501 is used to acquire carbonate rock samples, wherein the carbonate rock samples come from various forms or components.
[0101] The pre-processing module 502 is used to perform sample pre-processing on the carbonate rock sample to obtain a sample to be analyzed.
[0102] The first detection module 503 is used to detect the calcium content and the magnesium content of the sample to be analyzed.
[0103] The second detection module 504 is used to detect the content of major, trace and rare earth elements of a single carbonate mineral in the sample to be analyzed.
[0104] The processing module 505 is used to process the content of major trace elements and rare earth elements of a single carbonate mineral using the calcium content as an internal standard to obtain the rare earth and yttrium content of the single carbonate mineral.
[0105] In a possible implementation, the preprocessing module 502 is further specifically configured to:
[0106] The carbonate rock sample was ground into a thin slice with a thickness of 100 μm, and the thin slice was mechanically polished to obtain a polished thin slice;
[0107] The polished slices were carbon coated to obtain samples to be analyzed.
[0108] In a possible implementation, the first detection module 503 is further specifically configured to:
[0109] The calcium and magnesium contents of the sample to be analyzed were detected using an electron probe under the working conditions of an accelerating voltage of 15 kV, a beam current of 10 nA, and a beam spot size of 8 μm.
[0110] In a possible implementation, the second detection module 504 is further specifically configured to:
[0111] Laser ablation-inductively coupled plasma mass spectrometry (LAP-IMS) was used to detect the major, trace and rare earth element contents of individual carbonate minerals in the sample to be analyzed.
[0112] In a possible implementation, the processing module 505 is further specifically configured to:
[0113] Analyze rare earth elements to obtain the corresponding relationship between rare earth types and rare earth elements;
[0114] Optionally, the correspondence between rare earth types and rare earth elements includes:
[0115] If the rare earth type is light rare earth, the corresponding rare earth elements are lanthanum, cerium, praseodymium and neodymium;
[0116] If the rare earth type is medium rare earth, the corresponding rare earth elements are samarium, europium, gadolinium, terbium, dysprosium and holmium;
[0117] If the rare earth type is heavy rare earth, the corresponding rare earth elements are erbium, thulium, ytterbium and lutetium.
[0118] Using the preset rock type as the standard, the rare earth element standardization treatment is carried out to obtain the standardized treatment results;
[0119] Determine the rare earth and yttrium content of individual carbonate minerals, and the correspondence between rare earth types and rare earth elements, based on the correspondence between rare earth types and rare earth elements and the results of standardization processing;
[0120] The rare earth and yttrium element distribution characteristics of carbonate rock samples are determined based on the rare earth and yttrium element content, rare earth type and the correspondence between rare earth elements in individual carbonate rock minerals.
[0121] In a possible implementation, the processing module 505 is further specifically configured to:
[0122] The original sedimentary signal of the carbonate rock sample is determined based on the rare earth and yttrium element distribution characteristics of the carbonate rock sample.
[0123] This embodiment provides an in-situ analysis device for rare earth element content in carbonate rocks, which can execute the method provided in the above method embodiment. Its implementation principle and technical effects are similar, and are not described in detail in this embodiment.
[0124] Figure 6 This is a schematic diagram of the structure of an in-situ analysis device for rare earth element content in carbonate rocks provided in this application. Figure 6 As shown, the electronic device 60 provided in this embodiment includes: at least one processor 601 and a memory 602. Optionally, the device 60 further includes a communication component 603. The processor 601, the memory 602 and the communication component 603 are connected via a bus 604.
[0125] During the specific implementation process, at least one processor 601 executes the computer-executable instructions stored in the memory 602, so that the at least one processor 601 performs the above method.
[0126] The specific implementation process of the processor 601 can be found in the above method embodiment. Its implementation principle and technical effects are similar and will not be repeated here in this embodiment.
[0127] In the above embodiments, it should be understood that the processor may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), etc. A general-purpose processor may be a microprocessor or any conventional processor. The steps of the method disclosed in the present invention may be directly implemented by a hardware processor or implemented by a combination of hardware and software modules in the processor.
[0128] The memory may include a high-speed memory (Random Access Memory, RAM), and may also include a non-volatile memory (NVM), such as at least one disk memory.
[0129] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus. Buses can be classified into address buses, data buses, and control buses. For ease of illustration, the buses in the drawings of this application are not limited to just one bus or just one type of bus.
[0130] The present application also provides a computer program product, including a computer program, which implements the above method when executed by a processor.
[0131] The present application also provides a computer-readable storage medium, in which computer-executable instructions are stored. When a processor executes the computer-executable instructions, the above method is implemented.
[0132] The above-mentioned readable storage medium can be implemented by any type of volatile or non-volatile memory device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk. The readable storage medium can be any available medium that can be accessed by a general-purpose or special-purpose computer.
[0133] An exemplary readable storage medium is coupled to a processor so that the processor can read information from the readable storage medium and write information to the readable storage medium. Of course, the readable storage medium can also be an integral part of the processor. The processor and the readable storage medium can be located in an application specific integrated circuit (ASIC). Of course, the processor and the readable storage medium can also exist in the device as discrete components.
[0134] The division of units is merely a logical functional division; actual implementations may employ alternative divisions, such as combining or integrating multiple units or components into another system, or omitting or disabling certain features. Furthermore, any direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between devices or units, either through an interface, electrical, mechanical, or other means.
[0135] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.
[0136] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
[0137] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, and other media that can store program code.
[0138] Those skilled in the art will appreciate that all or part of the steps in the above-described method embodiments can be implemented using hardware associated with program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments. The aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.
[0139] Finally, it should be noted that those skilled in the art will readily identify other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art not disclosed herein. The present invention is not limited to the precise structure described above and illustrated in the accompanying drawings, and various modifications and variations may be made without departing from the scope thereof. The scope of the present invention is limited solely by the appended claims.
Claims
1. A method for in-situ analysis of rare earth element content in carbonate rocks, characterized in that: include: Obtaining carbonate rock samples, wherein the carbonate rock samples come from a variety of rock morphologies or compositions; performing sample pretreatment on the carbonate rock sample to obtain a sample to be analyzed; detecting the calcium content and magnesium content of the sample to be analyzed; Detecting the major, trace and rare earth element contents of individual carbonate minerals on the sample to be analyzed; The calcium content is used as an internal standard to process the major and trace elements and rare earth element contents of the single carbonate mineral to obtain the rare earth and yttrium element contents of the single carbonate mineral.
2. The method according to claim 1, characterized in that The detection of the major, trace and rare earth element contents of a single carbonate mineral on the sample to be analyzed comprises: Laser ablation-plasma mass spectrometry is used to detect the major, trace and rare earth element contents of individual carbonate minerals on the sample to be analyzed.
3. The method according to claim 1, characterized in that The detecting of the calcium content and the magnesium content of the sample to be analyzed comprises: The calcium content and magnesium content of the sample to be analyzed were detected by an electron probe under the working conditions of an acceleration voltage of 15 kV, a beam current of 10 nA, and a beam spot size of 8 μm.
4. The method according to claim 1, wherein The pre-processing of the carbonate rock sample to obtain a sample to be analyzed includes: Grinding the carbonate rock sample into a thin slice with a thickness of 100 μm, and mechanically grinding the thin slice to obtain a polished thin slice; The polished slice is subjected to carbon coating treatment to obtain a sample to be analyzed.
5. The method according to any one of claims 1 to 4, characterized in that After using the calcium content as an internal standard to process the data of the major, trace and rare earth element contents of the single carbonate mineral to obtain the rare earth and yttrium element contents of the single carbonate mineral, the method further includes: Analyze rare earth elements to obtain the corresponding relationship between rare earth types and rare earth elements; Using the preset rock type as the standard, the rare earth element standardization treatment is carried out to obtain the standardized treatment results; Determining the rare earth and yttrium content of the single carbonate mineral and the corresponding relationship between the rare earth type and the rare earth element according to the corresponding relationship between the rare earth type and the rare earth element and the normalization processing result; The rare earth and yttrium element distribution characteristics of the carbonate rock sample are determined based on the rare earth and yttrium element content of the single carbonate rock mineral and the corresponding relationship between the rare earth type and the rare earth element.
6. The method according to claim 5, characterized in that The correspondence between the rare earth types and rare earth elements includes: If the rare earth type is light rare earth, the corresponding rare earth elements are lanthanum, cerium, praseodymium and neodymium; If the rare earth type is medium rare earth, the corresponding rare earth elements are samarium, europium, gadolinium, terbium, dysprosium and holmium; If the rare earth type is heavy rare earth, the corresponding rare earth elements are erbium, thulium, ytterbium and lutetium.
7. The method according to claim 5, characterized in that After determining the rare earth and yttrium element distribution characteristics of the carbonate rock sample according to the rare earth and yttrium element contents of the single carbonate rock mineral and the correspondence between the rare earth type and the rare earth element, the method further includes: The original sedimentary signal of the carbonate rock sample is determined according to the rare earth and yttrium element distribution characteristics of the carbonate rock sample.
8. An in-situ analysis device for rare earth element content in carbonate rocks, characterized in that: include: at least one processor; as well as a memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the in-situ analysis method for rare earth element content in carbonate rocks according to any one of claims 1 to 7.
9. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the in-situ analysis method for rare earth element content in carbonate rocks according to any one of claims 1 to 7.
10. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the in-situ analysis method for rare earth element content in carbonate rocks according to any one of claims 1 to 7 is implemented.