291 results about "Elemental analysis" patented technology

The invention discloses a method for analyzing mineral trace elements by utilizing a micro-Raman spectrum, which comprises the following steps of: fixing a mineral sample on a rotary sample table of a micro-Raman spectrometer, selecting an area to be detected by combining a micro-imaging technology, collecting a Raman background signal under the pre-illumination of low-power laser, and analyzing the trace elements in the area to be detected according to the Raman background signal. The laser focal length, the spot size and the incident angle are adjusted accordingly, the laser is focused on a target area, under the calibrated laser condition, through a multi-angle excitation micro-area, after an algorithm is applied to optimize signals, reduce impurity interference and integrate multi-angle Raman signals, the characteristic spectrum information of the microelements can be extracted, and the microelements can be accurately detected. High-resolution analysis of sample components is realized, and a three-dimensional distribution model of microelements in a microcell is constructed in combination with microscopic imaging data. The method has the characteristics of non-destructiveness, high resolution and rapid detection, and is suitable for mineral component analysis in the fields of geology, material science and the like.

The invention discloses a multi-mode LIBS mineral oxygen element analysis method. The method comprises the following steps: firstly, preprocessing an LIBS spectrum, and then fusing the spectrum and a mineral microscopic image by using a deep learning model to carry out feature extraction and oxygen analysis. The core of the method is model training: shielding a spectrum, pairing the spectrum with a corresponding mineral image (positive samples and negative samples), and generating a fused spectrum-image representation by using mask reconstruction and comparative learning. The element content is predicted based on this representation, and the model is optimized according to the oxygen prediction results. According to the method, accurate, robust and interpretable quantitative analysis of the oxygen element in the complex mineral matrix can be realized.

The invention discloses a polluted river water nitrogen and phosphorus removal efficiency evaluation system and method based on element analysis, and relates to the technical field of sewage treatment evaluation. An algae growth dynamic model is trained, and the future growth dynamic state of algae is obtained according to future water body data and future environment driving data; the method comprises the following steps: analyzing the interference influence of interference ion concentration on sensor measurement according to future water body data, dynamically simulating the attachment rate and biofilm thickness of algae on the surface of a sensor probe according to future growth of the algae, analyzing the attachment influence of the algae on sensor measurement, and correcting the measurement precision of the sensor according to the interference influence and the attachment influence. According to the corrected sensor data, whether the nitrogen and phosphorus removal efficiency of the polluted river water meets the removal standard or not is evaluated, real-time correction of the sensor data is achieved through interference ion concentration analysis and dynamic simulation of biological adhesion influence, and the accuracy of monitoring data and the scientificity of pollution treatment efficiency evaluation are effectively improved.

The invention relates to the technical field of element logging, in particular to a shale brittleness evaluation method and device based on element analysis, and the method comprises the following steps: researching the relationship between minerals and element contents, finding out sensitive elements of different minerals, establishing a conversion model of the elements and the minerals, solving a brittleness index, and classifying according to a shale gas reservoir brittleness classification standard. According to the relation between the mineral content and the element content, sensitive elements of different minerals are found out, and the element-mineral conversion model is established, so that the brittleness evaluation method is established, and powerful technical guarantee is provided for shale gas development evaluation.

An apparatus and method for safe, timely and precise analytical composition measurements of a body of molten metal or alloy arranged in a metal furnace using an evacuated hollow tube to extract a sample of a melt from the body of molten metal or alloy. With the invention, the need for human intervention in sample extraction may be minimized, e.g., transportation of and preparation of a sample. The method comprises configuring a hollow tube to a metal furnace, establishing vacuum conditions within the hollow tube to extract the molten metal or alloy into the hollow tube to form a liquid metal or alloy column within said tube and carrying out elemental composition measurements on said liquid metal or alloy using known techniques such as Laser Induced Breakdown Spectroscopy (LIBS).

The invention discloses an electrolytic double-spraying sample preparation method for analyzing a second phase in a nickel-based superalloy. The method comprises the following steps: (1) pretreating the nickel-based superalloy to obtain a thin sheet with the thickness of 50-100 microns; (2) carrying out electrochemical corrosion on the sheet by adopting an electrolytic double-spraying method to realize passivation protection on a matrix phase, and corroding and dissolving a gamma'phase until a corroded SEM observation sample is obtained; the electrochemical corrosion conditions are as follows: the working voltage is 15-20V; the working temperature is controlled between-20 DEG C and-10 DEG C; and the electrolyte comprises 15-25% of concentrated sulfuric acid and 75-85% of methanol. According to the method, the problem that carbide to be observed phase falls off and is lost due to corrosion of the wrapped matrix can be avoided, meanwhile, the carbide phase and non-metallic inclusions cannot be corroded, the outline of the second phase can be clearly reserved, impurity elements cannot be introduced, element analysis is facilitated, and the method is suitable for analysis of the second phase in the nickel-based high-temperature alloy.

The invention relates to a manufacturing method of a cross section TEM sample with a hot-dip galvanized steel coating structure. The method comprises the following steps: S1, cutting a sample; s2, oppositely adhering the test sample; s3, grinding and polishing the sample; s4, adhering the sample to a ring; and step S5, pit thinning: the sample polished in the previous step is subjected to side pit thinning by using a pit instrument, and then is subjected to thinning by using an ion thinning instrument so as to obtain a nano-scale thin area, and the sample is taken as the sample for cross section TEM characterization. The TEM imaging effect is good, and zinc coating structure, element analysis, phase analysis and high-resolution observation can be rapidly achieved.

The invention belongs to the technical field of elemental analysis equipment, and relates to an X-ray fluorescence spectrum analysis device and method for distinguishing 201 steel and 304 steel, and the device comprises a laser emitter which emits laser to measured metal, and generates a periodic micro-nano structure on the surface of a material by using the energy of the laser; the X-ray excitation source is used for emitting X-rays to the detected metal; the prism light splitting device is used for decomposing spectral information into components with different wavelengths and then distributing the components to different silicon drift detectors for acquisition; a plurality of silicon drift detectors collect spectral information and convert the spectral information into electric signals according to energy resolution; the data processor is used for analyzing the electric signal received by the silicon drift detector and converting the electric signal into an energy spectrum for generating elements; and quantitatively determining the content of each element in the sample by adopting an energy spectrum. By adopting the laser transmitter and accurately controlling the detection time, the time difference of X-rays emitted by different elements can be distinguished, so that more accurate analysis is realized.

The invention relates to the technical field of elemental analysis, in particular to an all-elemental analysis method for unknown waste. The all-element analysis instrument provided by the invention comprises an inductively coupled plasma emission spectrometer (ICP-OES), an inductively coupled plasma mass spectrometer (ICP-MS), an X-ray fluorescence spectrometer (XRF), an energy dispersive X-ray spectrometer (EDS), an infrared carbon-sulfur analyzer, an oxygen-nitrogen-hydrogen analyzer, an elemental analyzer (EA), a chemical method, a spark direct-reading spectrometer and an ion chromatograph (IC). The all-element analysis can accurately determine the contents of components and elements in the product, and can provide high-quality and comprehensive data, thereby helping researchers to better understand the interaction and influence among the elements. All-element analysis of the unknown waste is of great significance to improvement of waste resource utilization efficiency, optimization of waste treatment process, promotion of green low-carbon technical progress and formulation of effective resource utilization measures.

The invention belongs to the field of unconventional oil-gas exploration, and particularly relates to a lacustrine facies shale bed sequence stratigraphic division method based on principal component analysis. According to the method, rapid elemental analysis is carried out on a rock core sample by combining a portable energy dispersion X-ray fluorescence spectrophotometer, standardized processing is carried out on collected data, and key stratum change characteristics are extracted from the processed data by utilizing principal component analysis (PCA); by comprehensively considering multi-dimensional geological features such as lithology, mineral composition and oxidation-reduction conditions and combining existing geological background information and logging data, sequence units of lacustrine facies shale are divided. Compared with an existing method, the method has the advantages that a large amount of data can be efficiently processed in the complex sedimentary environment, man-made interference is reduced, data processing efficiency is improved, and more accurate and comprehensive technical support is provided for lacustrine facies shale bed sequence division.

The invention discloses a method, a system, equipment and a medium for determining impurity components in graphite ore, and relates to the technical field of component determination. The method comprises the following steps: preparing a standardized sample; respectively measuring a to-be-measured sample and the standardized sample by using an X-ray fluorescence spectrophotometer, and determining the elemental analysis line intensity of the to-be-measured sample and the elemental analysis line intensity of the standardized sample; performing regression analysis on the elemental analysis line intensity of the standardized sample by using a mathematical correction mode, and determining related parameters; the related parameters comprise a calibration curve constant and a spectral line overlapping interference correction coefficient; and content calculation is carried out based on the elemental analysis line strength of the sample piece to be detected and the related parameters, and the impurity components in the target graphite ore are obtained. The method provided by the invention can improve the determination precision of impurity components in graphite ore.

The invention belongs to the technical field of elemental analysis, and provides a spent fuel sample total alpha and total beta activity analysis system and a spent fuel sample total alpha and total beta activity transportation and analysis method.The system comprises a glove box and an analysis unit, and a shielding chamber and a conveying assembly are installed in the glove box; a detector assembly is mounted in the shielding chamber and is used for detecting a sample in the shielding chamber; the conveying assembly is used for conveying samples, and the samples are placed in the tray; the analysis unit is located outside the glove box, connected with the detector and used for analyzing data detected by the detector. According to the analysis system, split design of the glove box and the analysis unit is adopted, the part in contact with the sample is placed in the glove box, the radioactive process sample can be analyzed and detected, the risk of radioactive substance leakage is reduced, meanwhile, the analysis unit is placed outside the glove box, radiation of the radioactive substance is avoided, the service life is prolonged, and the cost is reduced. And the maintenance operation is also convenient.

The invention relates to the technical field of spectral analysis, and particularly discloses an underwater intelligent detection machine system and method based on laser-induced breakdown spectroscopy, and the system comprises an underwater carrying platform, an orthogonal double-pulse laser-induced breakdown spectroscopy probe, a multi-sensor cooperative sensing module, a mechanical arm, a central control unit and a water surface control station. The method comprises the following steps: a first pulse vertically builds bubbles, and a second pulse parallelly enters the bubbles and is triggered according to delay time; the central control unit maintains a working distance of 1-2cm based on a distance measurement closed loop, and adaptively adjusts delay time and energy in combination with water depth pressure and cavitation feedback; and the water surface control station carries out denoising normalization on the spectrum calibration and carries out element qualitative and quantitative operation to generate an element distribution atlas. According to the method, plasma is excited in a cavitation bubble gas environment through orthogonal double pulses, and in-situ real-time high-sensitivity element detection of an underwater target is realized in combination with distance closed loop and parameter self-adaption.

The invention belongs to the technical field of chemical element analysis, and particularly relates to a method and device for measuring the content of trace boron in metal calcium. The method comprises the following steps: dissolving a to-be-detected sample to obtain to-be-detected liquid; measuring the intensity of emitted light to be measured of the liquid to be measured under a preset analysis wavelength by using an inductively coupled plasma atomic emission spectrometer; determining the content of the boron element in the to-be-detected sample based on a pre-determined standard curve and the to-be-detected emitted light intensity, the standard curve is obtained by fitting emission light intensity of a plurality of calcium-containing matrix boron standard solutions with different boron element contents under the preset analysis wavelength. According to the embodiment of the invention, the calcium matrix does not need to be separated, the inductively coupled plasma atomic emission spectrometer is directly used for determination, and the use of a toxic reagent methanol is avoided, so that the harm of the methanol reagent to a human body and the pollution to the environment are avoided, and the labor intensity of operators is reduced.

Processes for characterizing reservoir formations and directing downhole operations based on the characterized reservoir formations. In some embodiments, the process can include combining at least two downhole logs into input data. An interpretation method can be used to convert the input data into interpretative data. Elemental analysis can be used to convert the interpretative data into at least one formation model. Formation properties can be acquired from the at least one formation model. A reservoir quality classification can be created from the formation properties. The process can also include directing downhole operations using the reservoir quality classification to select a preferred downhole operation location.

The invention provides an improved authigenic mineral U-Pb dating method, and relates to the technical field of oil-gas exploration, and the method comprises the following steps: carrying out diagenetic age petrology analysis on a carbonate reservoir in a research area to prepare a plurality of parallel rock samples; carrying out diagenetic age microscopic mineralogical analysis on the parallel rock samples, and determining the diagenetic period of the carbonate reservoir in the research area; analyzing major elements, trace elements and rare earth elements of the parallel rock samples, determining a high U content area, and determining a diagenesis fluid source of the carbonate reservoir in the research area; and carrying out U-Pb isotope test analysis on the high U content region to obtain the diagenesis absolute age of different minerals or the same mineral of the carbonate reservoir in the research region. According to the method, dynamic quantitative recovery of the carbonate rock reservoir forming-reservoir forming dynamic process is achieved, and the defects that an existing method is low in dating success rate and high in test result multiplicity of solutions are overcome.

A shale adsorbed gas content calculation method belongs to the technical field of shale oil and gas resource evaluation, and comprises the following steps: carrying out an isothermal adsorption experiment to obtain a sample adsorbed gas content; carrying out an organic carbon content determination experiment to obtain a TOC value of the sample; carrying out a mineral content analysis experiment to obtain the clay mineral content; carrying out a low-temperature nitrogen adsorption experiment to calculate fractal dimensions; carrying out a back scattering two-dimensional large-area scanning electron microscope experiment to obtain the porosity of an organic pore surface; carrying out an element analysis experiment on the shale sample in the research area, and calculating to obtain the biological quartz content; the shale adsorbed gas content calculation model is established through multivariate linear fitting by taking the adsorbed gas content as a dependent variable and TOC, the clay mineral content, the fractal dimension, the organic pore surface porosity and the biological quartz content as dependent variables. According to the method disclosed by the invention, various sensitive parameters influencing the development of the organic pores are screened out and introduced into an organic pore surface porosity quantitative calculation model, so that the quantitative calculation of the content of the organic pores is realized under the condition that a scanning electron microscope is not provided.

This application relates to the field of conveyor belt fire technology, and provides a method and system for assessing the fire hazard of conveyor belts based on surface elemental analysis. In this method, the degradation degree index of the target conveyor belt is calculated by analyzing the changes in the content of surface constituent elements over wear time. Once the degradation degree index passes reliability verification, a constructed degradation-combustion prediction model is used to calculate the fire risk index of the target conveyor belt over wear time. This avoids interference from environmental factors such as underground dust and humidity in traditional assessment methods, enabling full life-cycle assessment and diagnosis of conveyor belts under different wear states before a fire occurs, overcoming the lag in traditional early warning methods.

Reference materials with increased lithium content for direct elemental analyses, wherein the glass contains 55 to 75 wt.% SiO2, 7 to 15 wt.% Na2O, 6 to 15 wt.% CaO, up to 3.5 wt.% AI2O3, up to 3.5 wt.% K2O, and up to 12 wt.% Li2O, and the value of the relative standard deviation (RSD) of homogeneous element distribution in the glass, determined by inductively coupled plasma mass spectrometry combined with laser ablation (LA-ICP-MS), is less than or equal to 5%.

The utility model relates to the technical field of test tube cleaning, in particular to automatic cleaning equipment for a reaction tube of an elemental analyzer, which comprises a base with a hollow structure inside, a cleaning box is fixedly mounted on the top side of the base, a support is fixedly connected to the top side of the cleaning box, and an electric push rod is fixedly mounted on one side of the support. The reaction tube cleaning device has the advantages that through the matched arrangement of the cleaning box, the electric push rod, the mounting seat, the storage through hole, the mounting hole, the fixing structure, the gear motor, the worm, the worm gear, the rotating shaft, the cleaning bristles and the outer port cleaning structure, more reaction tubes can be cleaned; and a structure for cleaning the outer port of the reaction tube is additionally arranged on the basis of cleaning equipment in the prior art, and the port bristles can be adjusted to proper positions according to the position of the outer port of the reaction tube, so that the outer port of the reaction tube can be better cleaned, and the practicability of the cleaning equipment is improved.

The present invention relates to a process for binding carbon dioxide to a waste building material 10, wherein the reaction is carried out in a carbonation reactor 20, wherein a waste building material 10 is fed to the carbonation reactor 20, wherein a carbon dioxide-containing gas 30 is fed to the carbonation reactor 20, and wherein a carbonation product 50 is discharged from the carbonation reactor 20, characterized in that the alkaline earth content of the waste building material 10 fed to the carbonation reactor 20 and / or of the carbonation product 50 discharged from the carbonation reactor 20 is determined by means of elemental analysis 60, wherein the degree of carbonation C of the carbonation product 50 is determined by IR spectroscopy, and wherein a carbonation degree limit value Cmax is set.wherein if the carbonation degree limit Cmax is undershot, the supply of the waste material 10 to the carbonation reactor 20 is reduced and / or the supply of the carbon dioxide-containing gas 30 to the carbonation reactor 20 is increased, wherein if the carbonation degree limit Cmax is exceeded, the supply of the waste material 10 to the carbonation reactor 20 is increased and / or the supply of the carbon dioxide-containing gas 30 to the carbonation reactor 20 is reduced.

The application discloses a method and a system for identifying exogenous plant protein adulteration in pure dairy products, which comprises the following steps: simultaneously extracting milk protein and lactose from the pure dairy products to be tested; using an elemental analyzer-stable isotope ratio mass spectrometer combined system to determine the carbon stable isotope ratio of the milk protein and the lactose; calculating the carbon isotope characteristic difference; making a qualitative determination of adulteration based on the statistical threshold established for pure cow milk; and quantitatively calculating the adulteration proportion of the exogenous plant protein by using a linear regression model constructed in advance. The system comprises a sample pretreatment module, an isotope detection module, a data processing module, a determination module and a quantitative calculation module. The application uses isoelectric point precipitation combined with organic solvent extraction to extract milk protein, and uses ethanol low-temperature recrystallization to purify lactose, and introduces lactose as an endogenous isotope internal standard, which effectively offsets the system error, can quickly determine the adulteration behavior and accurately calculate the adulteration proportion of the exogenous plant protein.

The present invention provides a method for selecting an inorganic filler, which can select an inorganic filler suitable for use in combination with a silane coupling agent using a functional group present on the filler surface as an index, and a method for producing a surface-treated inorganic filler and a method for producing a composite material using the selected inorganic filler. [Solution] The method for selecting an inorganic filler is a method for selecting an inorganic filler having a hydroxyl group, and includes the steps of: reacting the inorganic filler having a hydroxyl group with a trimethylsilylating agent to obtain an inorganic filler having a trimethylsilyl group; measuring the carbon concentration in the inorganic filler having a trimethylsilyl group by elemental analysis and calculating the concentration A of trimethylsilylated hydroxyl groups in the inorganic filler having a trimethylsilyl group based on the carbon concentration; and selecting an inorganic filler having a hydroxyl group based on the hydroxyl group concentration A.

The invention relates to a method for determining the chelation effect and the chelation rate of a compound amino acid microelement chelate. According to the determination method, the chelation effect and the chelation rate of the compound amino acid microelement chelate are determined through combination of an infrared spectroscopy method, an elemental analysis method and an anhydrous titration method, and the chelation effect comprises an action form and action intensity. The determination method comprises the following steps: weighing a compound amino acid trace metal chelate sample; taking a part of the to-be-detected powder and potassium bromide crystals, grinding together, pressing, measuring the infrared spectrum of the powder, and analyzing the chelation type and strength; taking another part of the to-be-detected powder, measuring the nitrogen content of the to-be-detected powder through an elemental analysis method, and calculating the total amount of amino acids in the sample; taking another part of the to-be-detected powder, removing inorganic salt in the to-be-detected powder, and drying; and dissolving the obtained solid powder, titrating without water, carrying out a blank experiment to eliminate the influence of reducing substances in the solution, and calculating to obtain the chelation rate. The method is simple and easy to operate and high in accuracy.

The present invention relates to the field of radioactivity-based elemental analysis, and in particular to an elemental analysis system, method and apparatus, and a program product. The elemental analysis system comprises: an X-ray scanning device comprising an X-ray source and a detector array and configured to perform dual-energy X-ray scanning on materials; a prompt gamma neutron activation analysis device mounted downstream of the X-ray scanning device in a material transfer direction; and a control apparatus configured to calculate, on the basis of the sizes, mass attenuation coefficients and densities of materials at various positions obtained by means of the X-ray scanning, a self-adsorption correction coefficient to correct a gamma spectrum. The elemental analysis system, method and apparatus, and the program product of the present application can improve the calculation accuracy of the correction coefficient, thereby improving the measurement precision of elemental analysis.

1. Name of the product in this design: Elemental Analyzer. 2. Application of this design: It is used for measuring the carbon, hydrogen, and nitrogen content in solid and liquid samples (including urea) in fields such as power, coal, metallurgy, petrochemicals, coal chemicals, environmental protection, cement, papermaking, geological exploration, scientific research institutes, and solid and hazardous waste. 3. The key design feature of this product is its shape. 4. The picture or photo that best illustrates the key design points: Design 1 3D diagram 1. 5. Design 1 is designated as the basic design.

The utility model discloses a kind of crucible replacement devices, including lifting datum plate, translation datum plate and crucible seat, sample sending sealing seat is equipped on the crucible seat, sample sending sealing seat is equipped on the sample sending rod, the top of the sample sending rod is equipped with the load-bearing platform for carrying crucible, the crucible seat is moved and arranged on translation datum plate along horizontal direction, translation datum plate is moved and arranged on lifting datum plate along vertical direction, and the lifting datum plate is used to be fixedly connected with the high-temperature furnace of elemental analyzer.The utility model further discloses a kind of elemental analyzer.The utility model has the advantages of simple structure and low failure rate.

The invention provides a detection method for a 5E-CHN200 elemental analyzer, which comprises the following steps: arranging a first gas change-over valve at the joint of a first oxygen gas path and a helium gas path, and communicating the first gas change-over valve with a carrier gas path; the carrier gas passage is connected with an inlet end pipeline of the hydrocarbon detection device, and the gas storage tank is also connected with the inlet end pipeline of the hydrocarbon detection device; the outlet end of the hydrocarbon detection device is connected with a conversion line pipeline; the conversion line comprises a first pipeline and a second pipeline which are arranged in parallel; a second gas conversion valve is arranged on the first pipeline, and a third gas conversion device and a nitrogen conversion device are arranged on the second pipeline; and the outlet end of the conversion line is connected with the nitrogen detection line. According to the invention, the gas flow and direction are reasonably regulated and controlled, and meaningless consumption of gas leakage and ineffective reaction on copper particles and drying agents is reduced.

The present application provides a carbonaceous material and a preparation method thereof, as well as a secondary battery, and an electrical apparatus containing the same. The content of element O of the carbonaceous material tested by X-ray photoelectron spectroscopy is denoted as A, the content of element O of the carbonaceous material tested by elemental analysis is denoted as B, and the carbonaceous material satisfies A / B≥3 and 5wt%≤A≤20wt%. The carbonaceous material provided in the present application enables the secondary battery to have substantially improved cycling performance and rate performance.

The invention relates to an imaging elemental analyzer for imaging one or more analyte elements in an organic sample, wherein the analyzer comprises: a chamber for receiving an organic sample containing one or more analyte elements to be imaged, wherein the internal chamber pressure surrounding the sample is in the range of 10 -5 up to 10 -2mbar; at least one irradiant selected from: (i) an ion gun for irradiating the sample with a high-intensity primary ion beam, wherein the primary ions are generated in the ion gun at a pressure below 1 mbar, the ion gun serving to focus the primary ion beam onto a localized spot on the sample surface and to move the spot over time to a plurality of locations on the sample surface; (ii) a laser for irradiating a localized spot on the sample surface and to move the spot over time to a plurality of locations on the sample surface; a gas-filled RF ion guide for receiving the generated ions, comprising the elements released from the sample in response to irradiation by the primary ions or the laser, wherein the RF ion guide prevents the propagation of any ions whose m / z values ​​are less than the mass or mass range of the analyte elements;and a time-of-flight (TOF) mass analyzer for recording the ions or reaction products of the secondary ions formed from the RF ion guidance, wherein the TOF mass analyzer is configured for a repetition rate of at least 5 kHz. The invention also relates to a corresponding method and a corresponding device for imaging one or more inorganic, non-volatile elements.