152 results about "Emission Spectrometer" patented technology

The invention provides a method for automatically determining the content of main elements in lithium battery black powder, and belongs to the technical field of lithium batteries. Characteristic spectral line intensity is collected by adopting an inductively coupled plasma emission spectrometer, background signals are deducted through wavelet multi-resolution decomposition, and the content of the main elements in the lithium battery black powder is obtained. Spectral overlapping peaks are separated through Fourier transform, an internal standard element is used for correcting a matrix effect, signal fluctuation introduced by pulse of a peristaltic pump is eliminated by adopting Kalman filtering, and relative intensity subjected to filtering smoothing is input into a multi-scale concentration calibration model with a layered soft maximum value classification layer; according to the model, interval affiliation probability distribution is output through a coarse-grained classifier, a fine-grained classifier is selected to carry out local concentration prediction and weighted fusion is carried out to obtain a concentration prediction value, and quality control standard sample monitoring and an instrument recalibration mechanism are combined; the technical problem that the measurement precision is reduced due to nonlinear distortion of a calibration curve when the multi-element concentration in the lithium battery black powder crosses a wide concentration range is solved.

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.

Disclosed herein are scientific instrument support systems, related methods, computing devices and computer-readable media. A method of mitigating distortion of an optical emission spectrum obtained from an optical emission spectrometer is provided. The method may comprise a step of obtaining a spectrum recorded with the spectrometer and a respective one or more condition parameters indicative of an operating condition at a time of recording the spectrum. The method may further comprise a step of providing a model configured to output, in response to the one or more condition parameters, one or more transform parameters of a transformation to be applied to the obtained spectrum. A transformation may be applied in accordance with the obtained one or more transform parameters to the obtained spectrum to mitigate distortion of the spectrum due to a discrepancy between the operating condition and a baseline operating condition.

Provided is a steel sheet comprising a base steel sheet and a chemical conversion coating disposed on the surface of the base steel sheet. The steel sheet is characterized in that: the base steel sheet has a chemical composition containing, in mass%, 0.10-1.00% of Cr; and the S-maximum emission intensity and the Cr-maximum emission intensity of the chemical conversion coating as measured by a high-frequency glow discharge emission spectrometer (GDS) satisfy the relations of 1.1≤S-maximum emission intensity / S-emission intensity of base steel sheet≤20.0, and 1.1≤Cr-maximum emission intensity / Cr-emission intensity of base steel sheet≤5.0. Also provided is a component including the steel sheet.

The invention discloses a method for simultaneously determining total barium and sulfur in barite by inductively coupled plasma emission spectrometry. In this method, the sample is decomposed by melting with sodium carbonate and sodium hydroxide. The molten slag is extracted with hot water, nitric acid and a chromium internal standard solution are added, the crucible and the beaker are washed with dilute hydrochloric acid, water is added and shaken well, heated to boiling gently on a hot plate and then taken off and shaken well. After cooling, it is determined on an inductively coupled plasma emission spectrometer. The method of the invention makes use of the characteristic that barium sulfate has a relatively large solubility in reverse aqua regia, enabling barium and sulfur to coexist stably, and then simultaneously determines total barium and sulfur by inductively coupled plasma emission spectrometry, which has the characteristics of high detection efficiency, high precision, simple operation and low cost, and solves the technical problems that when determining total barium and sulfur in barite by traditional methods, sulfur and barium are difficult to coexist in the solution, usually two different methods are required to complete the determination, and even barium and sulfur need to be separated in advance, resulting in a long process and low detection efficiency.

The invention discloses a combined determination method for the tin content of iron ore, which is characterized by comprising the following steps: drawing a calibration curve; selecting measurement parameters of an instrument; weighing a sample; sample melting: uniformly mixing the weighed sample with a mixed flux in a certain proportion, and melting in a muffle furnace; extracting a sample: extracting the fused sample by using hydrochloric acid, and fixing the volume for detection; and sample determination: determining by using an inductively coupled plasma emission spectrometer, determining the intensity value of each element by drawing a standard curve method, and calculating the final content of the element according to a calibration curve made by a standard solution. The invention aims to provide the combined determination method for the tin content of the iron ore, through experiments, the accuracy of determining the standard substance and the tin element of the tin-containing iron ore can be guaranteed, and through standard recovery experiments, the recovery rate is 95% or above. The method is used for production practice, and is an effective and practical method.

The invention relates to a mercury content detection method, and relates to the technical field of mercury detection. According to the mercury content detection method, the to-be-detected sample is preliminarily quantified by using the X-ray spectrometer, the mercury content range of the to-be-detected sample can be quickly obtained, the to-be-detected sample is weighed according to the preliminarily measured mercury content, and the accuracy and reliability of subsequent detection can be guaranteed. By means of constant-temperature water bath heating, it can be guaranteed that a sample to be detected is completely decomposed, meanwhile, a solution in the cover type funnel is poured back into the conical flask, mercury compounds volatilized after heating can be collected, mercury content loss is avoided, and the stability and accuracy of subsequent detection results are further guaranteed. The mercury standard solution is prepared, the inductively coupled plasma emission spectrometer is used for detection, manual titration operation is not needed, the anti-interference capability is good, the mercury content can be accurately measured, and the stability and accuracy of a detection result are effectively guaranteed.

The invention relates to an easily adjustable optical emission spectrometer (1), and a method (100) for establishing and operating such a spectrometer (1), the spectrometer (1) comprising a plasma holder (2) for establishing a luminescent plasma from a sample material, and an optical system (3) for measuring the spectrum of light (L) emitted by the plasma, the spectrum being characteristic of the sample material, wherein the optical system (3) comprises at least one light entrance aperture (31), at least one diffraction grating (32) for separating the light (L) coming from the plasma (A) and a method (100) for measuring the spectrum of the light (L). One or more detectors (33) of the optical emission spectrometer (1), wherein the plasma support (2) and the optical system (3) are directly and fixedly mounted on a plasma support flange (2B) and an optical system flange (3B) respectively, which are directly and fixedly connected to each other, and wherein the optical emission spectrometer (1) further comprises an analysis unit (34), which is suitable for analyzing the measured spectrum and compensating for a drift of the spectrum relative to the detector (33) that may be caused by heat transferred from the plasma support (2) to the optical system (3) taking into account thermal expansion of the optical system (3).

The invention relates to the technical field of analytical chemistry and mineral detection, in particular to a method for detecting potassium element in molybdenum concentrate, which comprises preparation, working curve solution preparation and inductively coupled plasma emission spectrometer detection. Through acid digestion, microwave treatment and instrument parameter optimization, the problem of matrix interference is solved, the detection sensitivity and efficiency are improved, the detection limit is greatly reduced, and the standard recovery rate is improved. The method is suitable for rapid quality monitoring of molybdenum concentrate, can be expanded to detection of other potassium-containing minerals, is combined with automatic equipment or an online monitoring system, improves the detection consistency and real-time performance, and has important application value.

The invention relates to the technical field of positive electrode material foreign matter detection, and particularly discloses a technology for detecting the number and content of foreign matters in an explosion-proof positive electrode material of a lithium battery. The method comprises the following steps: sampling a plurality of ton bags, uniformly dispersing a to-be-tested sample by taking absolute ethyl alcohol as a dispersing agent, and putting the to-be-tested sample into an ultrasonic machine by adopting a screen for ultrasonic screening until no obvious material residue exists on the screen; washing residues on the sieve with ultrapure water, carrying out suction filtration, and observing and acquiring quantity information of foreign matter particles through a cleanliness instrument; and finally, performing microwave digestion on impurities on the filter membrane, and testing the content of impurity elements by virtue of an inductively coupled plasma emission spectrometer, so that the interference of main elements in the sample is effectively eliminated. The method can realize efficient separation and accurate analysis of foreign matters in the positive electrode material, is high in detection sensitivity and simple and convenient to operate, can be widely applied to the quality control link of the positive electrode material, and provides reliable detection support for improving the safety performance of the positive electrode material.

The utility model discloses an inductively coupled plasma emission spectrometer which comprises an inductively coupled plasma emission spectrometer body, a limiting frame fixedly connected to the left end of the inductively coupled plasma emission spectrometer body, and a mounting ring arranged at the left end of the inductively coupled plasma emission spectrometer body, the limiting frame comprises a support arm of which the right side is fixedly connected with the left end of the inductively coupled plasma emission spectrometer body, and an end plate fixedly connected with the support arm; the adjusting pipe is sleeved on the outer wall of the air inlet pipe and can rotate relative to the air inlet pipe; the two ends of the air inlet pipe are fixedly connected with the end plate and the left end of the mounting ring respectively; a plurality of air inlets are annularly and uniformly distributed in the air inlet pipe; the adjusting pipe is provided with an opening corresponding to the air inlet. The utility model has the advantages that not only is the environmental adaptability and the service life of the instrument obviously improved, but also the internal cleaning frequency and the maintenance cost caused by dust pollution are effectively reduced.

The invention provides a method for determining the tin content in fuming furnace waste residues through composite alkali fusion ICP-AES, and belongs to the technical field of chemical analysis and testing. The fuming furnace waste residues to be treated are taken, a composite alkali flux is added into the fuming furnace waste residues to be treated and mixed to be uniform, and the composite alkali flux is a mixture of sodium peroxide and sodium carbonate; the method comprises the following steps: heating a mixture containing fuming furnace waste residues and a composite alkali flux to 400-700 DEG C, and carrying out gradient melting; after fusion is completed, transferring a melt into water for leaching, acidizing a product obtained by leaching, filtering, and fixing the volume of filtrate to obtain a solution to be detected; and preparing a standard solution and a blank solution, determining in an inductively coupled plasma emission spectrometer, and obtaining the tin content in the fuming furnace waste residue according to the obtained working curve. The method is applied to determination of low tin content, and the tin content in the tin-containing waste slag of the fuming furnace can be rapidly and accurately determined.

The invention relates to the technical field of agricultural science, and discloses a method for treating a sample before total measurement of forest soil nutrients by a microwave digestion instrument, which comprises the following steps: S1, weighing, screening and air-drying the forest soil sample, so that the sample has uniformity; s2, preparing a proper acid liquid mixture according to the characteristics of the soil sample; s3, putting the treated sample and an acid solution into a microwave digestion instrument, and performing digestion according to a set heating program; s4, the digested sample is filtered, concentrated and subjected to volume metering, and nutrient analysis is prepared; and S5, determining the nutrients of the digestion solution by using an inductively coupled plasma light emission spectrometer. By optimizing the combination of acid liquor proportion and microwave heating, nutrients in a soil sample can be released more comprehensively and more efficiently, and the microwave digestion technology can provide uniform heat in a short time, so that the acid liquor is rapidly heated and permeates into the sample, accurate release of all important elements is ensured, and the analysis accuracy is improved.

The utility model relates to an inductively coupled plasma emission spectrometer and a feeding assembly thereof, the feeding assembly is used for being connected with a sample introduction pipe of the inductively coupled plasma emission spectrometer, the feeding assembly comprises a liquid guide part, a liquid inlet pipe and a filter screen, one end of the liquid guide part is connected with the sample introduction pipe, and a liquid guide channel arranged in the vertical direction is formed in the liquid guide part; the top end of the liquid guide channel is communicated with the sample injection pipe; the liquid inlet pipe is arranged on the outer side of the liquid guide part, one end of the liquid inlet pipe is communicated with the bottom side of the liquid guide channel, and the filter screen is arranged in the liquid guide channel and located between the liquid inlet pipe and the sample inlet pipe; compared with the prior art, normal use of the inductively coupled plasma emission spectrometer can be prevented from being affected by blockage of the sample introduction pipe, and the filter screen can effectively keep a good filtering effect for a long time.

The invention relates to a method for preparing a liquid metal bath of a metallic alloy having a chemical composition comprising at least one first element (X1) and at least one second element (X2), the preparation method comprising a loading step (b) in which all or part of the variable metal scrap is continuously introduced into a melting furnace and melted to obtain all or part of a liquid metal bath, and a measurement step (c) in which the composition of said liquid metal bath is continuously measured using a laser-induced plasma atomic emission spectrometry (LIBS) device (3), so as to continuously measure at least a content of said first element (X1) and a content of said second element (X2) in the liquid metal bath. Figure 2

The invention relates to the technical field of chemical analysis and detection, in particular to a method for detecting iodide ions in nylon slices. The method for detecting the iodide ions in the nylon slices comprises the following steps: placing the nylon slices in a microwave digestion tank, adding a potassium sulfate aqueous solution with the mass concentration of 0.9-1%, placing the nylon slices in a microwave digestion instrument for digestion, cooling after digestion is finished, and recording the nylon slices as a sample A; and directly introducing the prepared test solution A into an inductively coupled plasma emission spectrometer for determination, and calculating through an iodide ion standard curve to obtain the actual iodide ion content in the sample. According to the method for detecting the iodide ions in the nylon slices, only one-time microwave digestion is needed, multiple times of transfer or complex reaction are not needed, the extraction efficiency is high, and operation is easy; meanwhile, potassium nitrate is replaced by potassium sulfate, so that the accuracy and repeatability of a measurement result are further improved.

Apparatus 10 controls a plasma abatement device 20 for treating an effluent stream 30 from a semiconductor processing tool. An optical emission spectrometer 50 measures an emission spectrum from the plasma abatement device and a controller 60 identifies from an intensity peak of the emission spectrum whether an amount of a reagent provided to the plasma abatement device is to be changed. A ratio of a plurality of intensity peaks may be used and compared with look-up information of preconfigured ratios of components in the effluent stream correlated with ratios of peak intensities. A desired ratio of intensities may be identified from the look-up information to optimise a destruction efficiency or an amount of by-product. The reagent may be hydrogen or oxygen. Components of the effluent stream may include hydrogen, oxygen, carbon, or fluorine. A corresponding method is also claimed.

The utility model discloses an in-situ on-line quantitative analysis system based on an inductively coupled plasma spectrometer, relates to the field of instrument analysis-sample component analysis and test, and aims to solve the problem that in-situ on-line quantitative analysis cannot be realized by a test mode of a conventional inductively coupled plasma emission spectrometer. The device comprises a sample introduction unit, an atomization analysis unit and a peristaltic pump assembly, the sample outlet end of the sample introduction unit communicates with the sample introduction end of the atomization analysis unit through the peristaltic pump assembly, and the peristaltic pump assembly comprises an external peristaltic pump unit and an internal peristaltic pump unit; the sample outlet end of the sample introduction unit is communicated with the sample introduction end of the external peristaltic pump unit, the sample outlet end of the external peristaltic pump unit is communicated with the sample introduction end of the internal peristaltic pump unit, and the sample outlet end of the internal peristaltic pump unit is communicated with the sample introduction end of the atomization analysis unit. The analysis system is mainly used for carrying out online quantitative analysis on sample substances.

The invention discloses a method for measuring the content of a copper element in a cast aluminum-copper alloy, which comprises the following steps of: firstly, crushing a sample with unknown content into particles with the particle size of less than 20 meshes, and then preparing a sample solution with unknown copper element content; then preparing the copper element standard substance into 3-5 parts of a series of standard solutions with gradients, wherein the copper element content in each series of standard solutions is 8.0-12.0%; then adjusting the working parameters of the inductively coupled plasma emission spectrometer, performing data acquisition on the emission spectrum light intensity of the copper element in each series of standard solutions, and drawing a standard working curve of each element according to the corresponding relationship between the element content and the emission spectrum light intensity; and substituting the copper element emission spectrum light intensity of the to-be-detected sample solution collected by the instrument into the standard working curve, and calculating the copper element content of the sample with unknown content. The determination method provided by the invention solves the problem of sample solution preparation when the cast aluminum-copper alloy is determined by the ICP spectrometer.

The invention belongs to the technical field of semiconductor material preparation, and particularly relates to a method for regulating and controlling the carbon-silicon ratio in real time by introducing chlorine and a silicon carbide coating. According to the method, under the conditions of 1000-1300 DEG C and 5-15 kPa, 0.05-2% of chlorine is continuously introduced while a silicon-containing carbon precursor and hydrogen are introduced, an inductively coupled plasma optical emission spectrometer (ICP-OES) is used for monitoring the emission spectrum intensity ratio of C2 to SiCl2 in real time, the emission spectrum intensity ratio serves as a feedback signal, the chlorine flow is dynamically adjusted through closed-loop control, and the content of the silicon-containing carbon precursor is determined. Therefore, on-line accurate control of the carbon-silicon ratio of the silicon carbide coating is realized, and the fluctuation range is less than or equal to + / -0.02. According to the method, free carbon and silicon clusters in the coating can be effectively eliminated, the compactness, surface flatness and hardness of the coating are remarkably improved, and the technical problems that in the prior art, the stoichiometric ratio cannot be accurately regulated on line, response is slow, and defects are likely to be generated are solved.

The invention discloses a method for detecting the content of elements in alloy or ore by using an ICP emission spectrometer, and belongs to the technical field of spectral analysis. The invention solves the problems of inaccurate measurement result caused by easy ionization element interference and spectral background drift when the existing ICP spectrometry is used for analyzing a complex matrix sample, and the problems of complicated process and low efficiency of the traditional chemical analysis method, and provides a dynamic internal standard introduction technology and combination of low ionization energy and high ionization energy internal standard elements. According to the method, the matrix effect and spectrum background interference can be corrected in real time, the detection accuracy and stability are remarkably improved, meanwhile, through real-time quality monitoring and pre-training of an interference correction model, the detection efficiency and reliability are improved, powerful technical support is provided for high-precision detection of the content of elements in alloy and ore, and finally, the method has good application prospects. The element content is calculated by comparing the corrected net strength of the to-be-detected element with the pre-established standard curve, so that the accuracy and the reliability of a detection result can be remarkably improved.

The invention relates to the technical field of mineral content detection, in particular to a method for simultaneously determining total barium and sulfur in barite through acid dissolution-inductively coupled plasma emission spectrometry. The method comprises the following steps: adding nitric acid and hydrochloric acid into barite, heating on an electric heating plate, adding a chromium internal standard solution and a nitric acid solution, heating, cooling, and determining by using an inductively coupled plasma emission spectrometer. According to the method, simultaneous determination is achieved in an acid dissolution mode, the detection efficiency is improved, time and cost are saved, the whole test solution preparation process is relatively simple, accurate volume determination is not needed, sample digestion treatment can be completed through common means such as electric hot plate heating under conventional laboratory conditions, and the method is more stable, easy and convenient to operate, easy to master and suitable for large-scale popularization and application. The reproducibility is good, and popularization and application are convenient. Meanwhile, the method can improve the accuracy and precision of a measurement result, so that the measurement result is more reliable.

This utility model relates to a calibration device for an ICP emission spectrometer, which includes a plasma torch. The calibration device includes: a light source emitting a first emitted light; a collimation module collimating the first emitted light to form a second emitted light containing a collimated beam; a switchable beam splitter converting the second emitted light into axial and / or radial optical paths; a first lens assembly optically processing the axial optical path to match the axial emitted light of the plasma torch; and a second lens assembly optically processing the radial optical path to match the radial emitted light of the plasma torch. This calibration device introduces controllable optical signals into the original optical path without altering the internal optical structure, thereby generating a plasma equivalent light field to simulate the spatial position and beam distribution characteristics of axial and radial plasma emission.

The application belongs to the technical field of RMA material analysis and detection, and discloses a digestion method of RMA material and a determination method of zirconia content in the RMA material. The digestion method is as follows: the RMA material is calcined to remove organic matter, and then is added into a mixed digestion solution composed of ammonium nitrate, sulfuric acid and hydrochloric acid to perform microwave digestion, so as to obtain a digestion solution. The determination method of the zirconia content is as follows: the digestion solution is diluted with nitric acid and an internal standard substance is added, and the volume is adjusted to obtain a sample to be measured; a standard series solution with different zirconium (Zr) concentrations is prepared, and then an inductively coupled plasma emission spectrometer is used to perform scanning and draw a standard working curve; meanwhile, the sample to be measured is tested, and the zirconia content in the sample to be measured is calculated according to the standard curve. The method can completely digest the RMA material without adding hydrofluoric acid, and has a good guiding significance for studying the influence of the zirconia (ZrO2) content in the RMA material on the performance improvement of the material.

This invention discloses an integrated active spectral stabilization system and method for a desktop high-resolution X-ray emission spectrometer, belonging to the field of precision spectral analysis. The system includes: a single-unit thermal capacity main base with an integrated temperature-controlled flow channel, serving as a unified physical and thermal reference; optical components rigidly mounted directly on the base; a module supporting active vibration isolation of the base; and a closed-loop feedback subsystem consisting of a beam position sensor, a micro-motion compensation mechanism, and a controller. The method includes: establishing global thermal balance and active vibration isolation of the base; calibrating the optical path and recording the null position; real-time monitoring of the reference beam position; and dynamically locking the optical path by using a closed-loop drive micro-motion mechanism to compensate for the crystal angle based on the drift amount. This invention solves the long-term drift problem caused by modular assembly and passive stabilization in desktop high-resolution X-ray spectrometers, achieving long-term subelectron volt-level energy stability under conventional laboratory conditions, significantly improving measurement repeatability and reliability.

An emission stand (201) for an optical emission spectrometer, comprising a discharge box (210) and at least one auxiliary gas conduit (209a, 209b) for supplying an auxiliary gas flow into the discharge box (210), the at least one auxiliary gas conduit (209a, 209b) being configured to supply an auxiliary gas flow (214) into the discharge box (210) for a period of time after a spark action, but not during a spark action during which an analysis of a sample is performed. The auxiliary gas flow (214) into the discharge box (210) improves dust flushing from the discharge box (210) after the spark action.

The invention relates to the technical field of element detection, in particular to a method for detecting harmful elements in tattooing ink, which specifically comprises the following steps: S1, sample pretreatment: weighing a tattooing ink sample, adding nitric acid for heating digestion, S2, acid removal and constant volume: heating until complete digestion, continuing heating for acid removal, cooling, transferring into a volumetric flask for constant volume to obtain a to-be-detected solution, and detecting the content of harmful elements in the tattooing ink. S3, instrument detection: uniformly mixing the to-be-detected liquid, and carrying out multi-element simultaneous determination on the to-be-detected liquid by adopting an inductively coupled plasma emission spectrometer, and S4, result analysis: quantitatively analyzing the contents of arsenic, cadmium, cobalt, copper, mercury, nickel, lead, antimony and zinc elements in the tattoo ink sample according to detection signals. The method for detecting the harmful elements in the tattooing ink not only has high sensitivity and accuracy, but also has high efficiency, high flux, strong pertinence and wide applicability, and has important social benefits.

An optical emission spectrometer is provided. The optical emission spectrometer includes a plasma source, an optical assembly, a reference light source, and a first mirror. The plasma source is arranged to emit light. The optical assembly includes a plurality of optical components arranged to direct light traveling in a first direction from the plasma source along a first optical path to an entrance slit of the optical emission spectrometer. The reference light source is used for calibrating the spectrometer, wherein the reference light source is arranged to output reference light along a reference light path. The first reflector is arranged to selectively switch the reference light to the first light path, thereby guiding the reference light to the entrance slit for calibrating the optical emission spectrometer.

This invention relates to a hydride generation gaseous sample introduction method and apparatus for heavy metal element determination in conjunction with a liquid cathode glow discharge-atomic emission spectrometer, belonging to the field of atomic spectroscopy metal element analysis technology. This invention uses chemically generated carbon dioxide gas as a carrier gas, which is then used as the atmosphere gas in the liquid cathode glow discharge to ionize and generate micro-plasma. The chemical hydride generation method converts the applicable analyte element into a hydride, which is then carried into the micro-plasma by the carbon dioxide carrier gas, atomized, and excited to generate an emission spectrum.