56 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.

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 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 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 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.

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.

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.

An apparatus for plasma control is disclosed. The apparatus comprises: a plasma generator comprising two electrodes, an anode and a cathode, configured to produce a plasma between the two electrodes; a solenoid coil disposed to surround the plasma and configured to produce a magnetic field parallel to a longitudinal axis between the two electrodes; and circuitry configured for allowing independent timing of the magnetic field with respect to the production of the plasma. A method for plasma control in a spectroscopy system and an optical emission spectrometer using said method are also disclosed.

This utility model relates to the field of inductively coupled plasma atomic emission spectrometry (ICP-AES) and discloses a sample preparation device for ICP-AES. This utility model solves the problems of insufficient mixing, inconvenient reagent addition, environmental pollution, and easy loss of analytes in existing digestion and acid removal processes for samples such as molybdenum ore. In this device, the stirring paddle precisely controls its rotation speed based on real-time feedback from viscosity and density sensors on the inner wall of the digestion vessel. Combined with reagent addition tubes of different diameters and a reliable sealing structure, it achieves accurate and safe reagent addition, improving digestion efficiency and operational convenience. The acid removal cylinder features a surrounding electric heating wire combined with multi-position temperature sensors for precise temperature control. The suction fan and activated carbon adsorption layer effectively purify acid mist, ensuring efficient acid removal, preventing loss of analytes, reducing laboratory environmental pollution, and laying a solid foundation for subsequent accurate determination.

The application provides a method for preparing a zinc ion adsorbent from alkali hydrothermal modified lepidolite slag, and relates to the technical fields of resource comprehensive utilization and water treatment. The method comprises the following steps: firstly, drying and grinding and screening lepidolite smelting slag to obtain original lepidolite slag with a size of 100 meshes; then, mixing the original lepidolite slag with a NaOH solution, and performing a hydrothermal reaction in a micro reaction kettle; after the reaction, cleaning and drying the filter residue to obtain an alkali hydrothermal modified lepidolite slag adsorbent; finally, adding the adsorbent into a zinc ion-containing solution, and placing the solution in a water bath constant temperature oscillator to perform adsorption; filtering the adsorbed solution to obtain purified wastewater, and using an inductively coupled plasma emission spectrometer to determine the zinc ion adsorption rate. The adsorbent used in the method is low in price, simple in operation, and good in adsorption effect; the application uses the alkali hydrothermal modified lepidolite slag to adsorb zinc ions in water, and simultaneously solves the problems of lepidolite smelting slag storage and zinc-containing wastewater discharge polluting the ecological environment.

The invention discloses a method for analyzing trace elements in lead and a lead alloy. The method comprises the following steps: dissolving the lead and the lead alloy to obtain a sample solution; preparing a standard solution of to-be-detected elements and an internal standard element solution; enabling the internal standard element solution and the standard solution of the to-be-detected element to simultaneously enter the inductively coupled plasma emission spectrometer through the internal standard sample injection pipe and the sample injection pipe to obtain a standard curve of the to-be-detected element; enabling the internal standard element solution and the sample solution to simultaneously enter the inductively coupled plasma emission spectrometer through the internal standard sample introduction tube and the sample introduction tube to obtain the spectral intensity of the to-be-detected element in the sample solution, and determining the content of the to-be-detected element in the sample solution according to the standard curve of the to-be-detected element. According to the method, the acid is adopted to dissolve the lead and lead alloy sample, the inductively coupled plasma emission spectrometer is utilized to analyze the content of the trace elements in the lead and lead alloy, the strength of iron, chromium and nickel elements in the sample can be analyzed at the same time to obtain the content of multiple elements in the lead and lead alloy, the operation steps are simple, and the detection efficiency is high.

The utility model discloses an inductive coupling plasma emission spectrometer convenient to clean, which comprises a main case, a sample chamber, a sample introduction pipe, a cleaning assembly and a waste gas treatment module, the main case is of a rectangular box structure, a partition plate is arranged in the main case to divide the main case into an upper part and a lower part, the upper part is a main analysis cavity, and the lower part is an auxiliary cavity; the sample chamber is fixed in the middle of the main analysis cavity, the top of the sample chamber is connected with an external sample supply system through a sample injection pipe, the sample injection pipe penetrates through the top wall of the main machine shell and is in sealed connection with the main machine shell, and the cleaning assembly is installed in the main analysis cavity and located on the periphery of the sample chamber and comprises an annular guide rail, a spraying set, a rotating arm and a driving mechanism; the annular guide rail is fixed to the inner wall of the main analysis cavity and surrounds the outer side of the sample chamber, the section of the annular guide rail is T-shaped, the spraying set is driven by the annular guide rail and the rotating arm to conduct all-directional cleaning on the sample chamber, and the cleaning efficiency and the cleaning effect are improved.

The invention relates to a method for determining silicon dioxide in quartz glass based on a high-temperature melting reaction-inductively coupled plasma atomic emission spectrometer. The method comprises the following steps: crushing and grinding a sample into powder; adding a strong alkali flux into the obtained powdery sample, and uniformly mixing to obtain a mixture; melting the mixture at high temperature; leaching reactants with hot water and fixing the volume; drawing a silicon element concentration-spectral line emission intensity standard curve; testing the content of silicon in the sample solution; and calculating the content of silicon dioxide according to the measured content of silicon. The method comprises the following steps: adding a strong alkali solvent into a powdery sample obtained by grinding the sample, carrying out a high-temperature melting reaction, heating water to dissolve a reactant, and determining the content of silicon in the solution by adopting an inductively coupled plasma atomic emission spectrometer, so as to calculate the content of silicon dioxide in the quartz glass sample.

The invention discloses a method for rapidly determining the content of phosphorus in meat products based on an organic matter combined releasing agent, which comprises the following steps: (1) carrying out digestion pretreatment on a meat product sample to obtain a digestion solution; adding a constant volume solution into the digestion solution for constant volume, and filtering by using a filter membrane with the pore size of less than or equal to 0.45 mu m to obtain a sample solution; (2) respectively introducing the sample solutions into an inductively coupled plasma emission spectrometer, and measuring corresponding phosphorus element response values; comparing with a standard curve, and carrying out qualitative and quantitative analysis; the constant volume solution is an aqueous solution of isopropanol and cesium chloride, the mass concentration of the isopropanol is 1%-3%, and the mass content of cesium is 0.025%-0.15%. According to the method, isopropanol and cesium are adopted as a combined releasing agent to increase the signal intensity of the phosphorus element, the response value and stability of the phosphorus element are greatly improved, the detection limit of the method is 2.5 mg / kg, and the precision of seven times of repeated determination is 1.30%.

The invention discloses a method for determining the content of metal ions in a power battery electrolyte, and belongs to the technical field of chemical analysis, the method comprises the following steps: preparing a mixed solution containing acetonitrile, ethanol, methyl ethyl carbonate and deionized water; weighing a certain amount of the solution to be detected, fixing the volume, and detecting by adopting an inductively coupled plasma emission spectrometer (ICP-OES). According to the method, the trace metal ions in the power battery electrolyte can be detected, the method is high in accuracy and good in repeatability, the result can be rapidly fed back to guide production, and the production requirement is met.

The invention discloses an integral active spectrum stabilization system and method of a desktop high-resolution X-ray emission spectrometer, and belongs to the field of precise spectrum analysis. The system comprises a single heat capacity main base which is integrally formed and internally provided with a temperature control flow channel and serves as a unified physical and thermal reference; an optical assembly directly rigidly mounted on the base; the module is used for supporting the base to actively isolate vibration; and the closed-loop feedback subsystem consists of a light beam position sensor, a micro-motion compensation mechanism and a controller. The method comprises the steps that base global heat balance and active vibration isolation are established; calibrating a light path and recording a zero position; monitoring the position of the reference beam in real time; and a micro-motion mechanism is driven to compensate the crystal angle according to the drift distance in a closed-loop manner, and a light path is dynamically locked. According to the invention, the problem of long-term drift of the desktop high-resolution X-ray spectrometer caused by module assembly and passive stability is solved, sub-electron volt-level long-term energy stability in a conventional laboratory environment is realized, and the measurement repeatability and reliability are remarkably improved.

The invention relates to the field of analytical instruments, and discloses an ICP emission spectrometer for new material detection and a use method.The ICP emission spectrometer comprises a case and a switching mechanism, the switching mechanism comprises a switching box, a plurality of sealing rings are arranged at the top of the switching box, a switching valve is rotationally connected to the interior of the switching box, and the switching valve comprises a rotating ring; a plurality of cylindrical valves are fixedly connected to the inner side of the rotating ring, an adjusting piece is arranged on the outer side of the switching box and comprises rolling magnetic balls installed on the outer sides of the cylindrical valves, a position correcting baffle is slidably connected to the interior of the switching box, and a first strong magnetic block is fixedly connected to the bottom of the position correcting baffle. According to the multi-sample detection device, the sampling pipe does not need to be repeatedly disassembled and assembled, the sealing performance during switching is guaranteed through cooperation of strong magnetic locking and the cylindrical valve, and the channel positioning accuracy is guaranteed through limiting of the position correction baffle to the rolling magnetic ball, so that cross contamination of samples is avoided, meanwhile, the switching time consumption of multi-sample detection is shortened, and the batch detection efficiency is improved.

The invention belongs to the field of portable and trace detection of pollutants, and particularly relates to an aM-level detection method of perfluorooctanoic acid. The method comprises the following steps: firstly, triggering enzyme-free catalysis hairpin assembly by using a PFOA aptamer to generate double-stranded DNA to activate a CRISPR-Cas12a system, so as to realize target cyclic amplification and signal transduction; a DNA signal is converted into a copper element signal through a gold-core copper-shell nanoparticle labeling strategy, and multi-stage signal amplification is achieved; and finally, quantifying a Cu signal at 327 nm by adopting a capillary tube-micro plasma emission spectrometer driven by a self-developed lithium battery. The detection limit of the platform to PFOA reaches 0.50 aM, which is 4 orders of magnitude lower than the American EPA standard; the linear range spans 6 orders of magnitude (2.5 aM-2.5 pM); the standard addition recovery rate of 6 kinds of complex environment water samples (landfill leachate, breeding wastewater and the like) and 3 kinds of dairy products is 95.54%-108.63% (RSDlt; 5%).

This invention provides an apparatus and method for simultaneously measuring the concentrations of formaldehyde and glyoxal in the atmosphere. The apparatus includes a sample introduction system, an excitation light source, a main cavity, a spectrometer, a wavelength and power correction system, and a software control system. This method can rapidly and accurately measure the concentrations of formaldehyde and glyoxal in the atmosphere simultaneously with time resolution. This invention utilizes a highly selective and sensitive laser-induced emission spectrometer to achieve real-time monitoring of VOCs in hazy weather. It employs time-division multiplexing technology to achieve multi-level selectivity of the results, eliminating interference from field measurements, providing experimental support for tracing the sources of VOCs emissions, and providing strong technical support for studying the intrinsic mechanisms of atmospheric VOCs reaction kinetics. It boasts higher resolution, faster detection speed, and the ability to obtain more multi-dimensional data, and also has advantages such as low cost, modularity, and miniaturization.

The application provides a testing method of the content of alkali metal elements in a binder, comprising the following steps: 1) sequentially performing dry ashing treatment, pre-digestion treatment and microwave digestion treatment on the binder to obtain a digestion solution; the binder comprises alkali metal elements, and the alkali metal elements comprise sodium elements and / or lithium elements; the temperature of the microwave digestion treatment is higher than that of the pre-digestion treatment; 2) testing the peak intensity of the alkali metal elements in the digestion solution by using an inductively coupled plasma emission spectrometer; 3) drawing a standard curve based on an external standard method, and calculating the content of the alkali metal elements in the binder according to the peak intensity of the alkali metal elements in the digestion solution based on the standard curve. The testing method of the content of alkali metal elements in the binder provided by the application can improve the accuracy of the testing result, since the pretreatment process comprises dry ashing treatment, pre-digestion treatment and microwave digestion treatment in sequence.

The application discloses a kind of determination methods of the platinum content in automobile electric pile, the method is dissolved in aqua regia medium to automobile electric pile using microwave digestion instrument, ensure that the platinum in electric pile can be completely dissolved, after dissolving the sample to be measured is transferred into 100mL volumetric flask, with water constant volume, on inductively coupled plasma emission spectrometer to determine the platinum content, obtain the test result.Compared with the original ashing decomposition activated carbon sample pretreatment process, the application has sample complete dissolution, simple analysis process.Compared with the determination of platinum content by spectrophotometry, the application has high determination sensitivity, fast determination speed, small interference, wide linear range, and can realize multi-element joint measurement and other characteristics.The application can extend the determination of platinum content in carbon material.

The application provides a method for determining ultra-low content thallium in iron ore, which adopts an extraction separation method to extract thallium from a multi-component test solution containing iron, calcium, aluminum and silicon, realizes separation and enrichment, and then determines by using an inductively coupled plasma emission spectrometer; the application utilizes the chemical properties of thallium and alkane compounds containing active oxygen substituents represented by 4-methyl-2-pentanone, adopts an extraction method for separation and enrichment, establishes a suitable analysis method, and completes the detection of ultra-low content thallium in ore.