191 results about "Emission Spectrometer" patented technology

The invention discloses an X-ray wavelength dispersion pattern super-resolution synthesis method and a super-resolution X-ray emission spectrometer, and belongs to the technical field of X-ray emission spectrums. The method comprises the following steps of: 1, acquiring a wavelength dispersion pattern M of X-ray fluorescence by utilizing a detector on a detector assembly; 2, the detector is continuously displaced by a certain distance, wavelength dispersion pattern collection is carried out once each time the detector is displaced, the displacement distance of the detector is recorded, and the total displacement distance is the pixel width of the detector; 3, obtaining one-dimensional light intensity distribution data of all wavelength dispersion patterns; 4, determining a super-resolution multiple according to the moving distance of the detector; and 5, synthesizing all the obtained dispersion patterns to obtain a super-resolution dispersion pattern O, and calculating a super-resolution XES spectral line on the basis of the super-resolution dispersion pattern O. According to the invention, high resolution of the XES spectral line energy can be realized without adopting an expensive high-resolution X-ray detector, and the cost of an XES spectrometer is reduced.

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 discloses a method for high-pressure airtight determination of silver in copper ore, which adopts high-pressure airtight digestion-inductively coupled plasma emission spectrometry to determine the silver element in the copper ore, and comprises the following steps: accurately weighing 0.1000 g of copper ore sample into a polytetrafluoroethylene inner tank of a high-pressure airtight digestion tank, adding 3mL of hydrofluoric acid and 7mL of nitric acid to soak the sample for 12 hours, stirring for 20-30 minutes, and then taking out the sample; 0.1 mL of hydrogen peroxide is added before the polytetrafluoroethylene inner tank is sealed, after the inner tank is screwed, the metal outer tank is screwed, the polytetrafluoroethylene inner tank is put into an anti-corrosion constant-temperature drying oven, the temperature is increased to 160 DEG C from the low temperature, the temperature is kept for 6 hours, the polytetrafluoroethylene inner tank is taken out after being cooled to the room temperature, the volume is fixed to 10 mL, and a nitric acid solution with the volume fraction being 20% serves as a medium. And determining the content of the silver element in the copper ore under the optimal working condition of the inductively coupled plasma emission spectrometer. The method has the advantages of simple and convenient detection process, low economic cost of equipment, high sensitivity, low detection limit, accurate determination result, wide determination content range, less interference, environmental friendliness and the like, and also meets the detection requirements of simultaneously treating a large batch of geological ore samples.

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.

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.

The invention relates to a method for determining phosphorus in a phosphate extraction agent. The method comprises the following steps: (1) digesting the phosphate extraction agent with nitric acid at a certain temperature for a certain time; (2) diluting the digested solution with water and fixing the volume to obtain a to-be-detected solution; (3) making a phosphorus standard curve; (4) preparing a blank sample solution; (5) respectively putting the solution to be detected and the blank sample solution into an inductively coupled plasma emission spectrometer, and testing according to a phosphorus characteristic spectral line to obtain equivalent milligrams of phosphorus in each solution; and (6) calculating according to the following formula to obtain the percentage content of phosphorus in the phosphate extraction agent. The method is easy to operate and rapid in analysis process, the problems that in an electric hot plate or microwave digestion method, phosphate extraction agents cannot be completely digested, and insoluble substances exist are solved, the lower detection limit of phosphorus in the phosphate extraction agents is 0.0015 mg / L, the relative standard deviation of phosphorus is lower than 0.40%, and the adding standard recovery rate is 99.91%-101.14%.

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 discloses an ICP-OES (Inductively Coupled Plasma Optical Emission Spectrometer) method for determining the content of cerium in aviation gear steel. The method comprises the following steps: setting working parameters of an inductively coupled plasma emission spectrometer; determining the blank solution and the cerium standard solutions under different concentrations by using an inductively coupled plasma emission spectrometer, and drawing a cerium element concentration standard curve; determining a to-be-determined sample solution by using the inductively coupled plasma emission spectrometer, and then determining the content of the cerium element in the to-be-determined solution by combining the cerium element concentration standard curve. According to the method, the content of the cerium element in the aviation gear steel is accurately measured, meanwhile, it is guaranteed that other elements are accurately measured, no element loss is generated, and compared with a steel mill test result, a sulfuric acid-phosphoric acid fuming method, a perchloric acid fuming method and a spectrophotometric method, the difference is small, precision is high, and accuracy and reliability are achieved.

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 discloses an inductively coupled plasma emission spectrometer sample introduction device and relates to the technical field of spectrometer sample introduction. The inductively coupled plasma emission spectrometer sample introduction device comprises a feeding pipe, the feeding end of the feeding pipe is inserted into a sampling pipe, the middle of the feeding pipe is provided with a rubber hose pump motor for providing power for liquid conveying of the feeding pipe, and the discharging end of the feeding pipe is communicated with the receiving end of an atomizing chamber; the atomizing chamber is communicated with one end of the argon conveying pipe, the conveying pump is communicated with the other end of the argon conveying pipe, limiting conditions are provided through the limiting block, the rotating sleeve is rotated to drive the sliding groove to move, the sliding groove drives the sliding rod to move in the sliding groove, and the argon conveying pipe is arranged in the atomizing chamber through the fact that the sliding rod is located at different positions of the sliding groove. The sliding rod drives the transmission block to slide in the ring block, the transmission block drives the arc block to clamp the wall of the sampling tube through movement of the transmission block in the ring block, the sampling tube is closed in cooperation with the cover plate, and the sampling tube is prevented from toppling over and a sample is prevented from being lost and damaged in the sampling process.

The invention discloses a method for detecting the content of trace cerium element in low alloy steel. The method comprises the following steps: respectively preparing a blank sample dissolved with a high-purity iron sample and a to-be-detected sample dissolved with a low alloy steel-containing sample; the method comprises the following steps: after selecting a cerium element standard mother solution, preparing a cerium element standard solution with gradient concentration by adopting a blank sample dissolved with a high-purity iron sample; and introducing the standard solution into an inductively coupled plasma emission spectrometer for measurement to obtain a standard curve, detecting the to-be-detected sample dissolved with the low-alloy-steel-containing sample under the same condition, and calculating the content of the cerium element in the to-be-detected sample dissolved with the low-alloy-steel-containing sample according to the standard curve. The method for measuring the trace cerium element in the low alloy steel through ICP is established for the first time, the method has the advantages of being high in sensitivity, good in stability, accurate in quantification, short in detection time, low in cost and the like, and a reliable detection method is provided for rapidly, efficiently and accurately measuring the content of the cerium element in the low alloy steel.

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 utility model discloses a dimming system of an X-ray high-energy resolution spectrometer analysis crystal simulation light source, which is characterized by comprising a 4pi-emission point light source, an analysis crystal and a white board, the 4pi-emission point light source is arranged at the position of a sample and is used for simulating a fluorescence signal excited by X-rays irradiated on the sample; the analysis crystal is used for reflecting the incident fluorescence signal; and the white board is used for receiving the point light source signal reflected by the analysis crystal and determining the position of the surface detector according to the optimal receiving position. The light modulation system provided by the utility model is low in cost and easy to operate, can be used for rapid light modulation of von Hamos type and Johann type X-ray emission spectrometers, and also can realize rapid light modulation of von Hamos total cylindrical emission spectrometers.

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 the technical field of fuel additive analysis, in particular to a method for determining the content of elements in kaolin by alkali fusion-inductively coupled plasma emission spectrometry, which comprises the following steps: drying and crushing kaolin to obtain a kaolin sample; carrying out melting treatment on the kaolin sample, and dissolving the molten sample to obtain a sample solution; preparing a series of standard solutions of test elements; carrying out inductively coupled plasma emission spectrum test on the series of standard solutions to obtain a standard curve of test elements; and performing inductively coupled plasma emission spectrum test on the sample solution, and determining the content of the test element in the sample solution according to the standard curve of the test element. The lithium metaborate is used for melting and decomposing the sample, the inductively coupled plasma emission spectrometer is used for determining the content of the 10 elements in the kaolin, and the method has the characteristics of convenience, rapidness and high applicability, and is of great significance for improving the detection efficiency of the kaolin.

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.

The invention belongs to the technical field of chemical analysis, and particularly relates to a method for analyzing iron ions in acidic water. The method includes: preparing a standard solution; debugging an inductively coupled plasma emission spectrometer, and preparing a sample solution; putting the standard solution into an inductively coupled plasma emission spectrometer, and drawing a standard curve by taking the emission intensity of iron atoms as an X axis and the iron element content as a Y axis; adding 1: 1 hydrochloric acid or hydrogen peroxide into the sample solution to acidize until the pH value is less than 1, putting the sample solution into the inductively coupled plasma emission spectrometer, and measuring the emission intensity of iron atoms in the sample solution; calling the standard curve, and determining the iron element content in the sample solution according to the emission intensity of the iron atoms in the sample solution. The interference of the color of the water sample on analysis is eliminated. The method has the advantages of small dosage of chemical reagents, good detection repeatability, high accuracy, and reduction of the analysis time and the labor intensity.

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 provides an analysis method for ultra-low acid-soluble aluminum in a cord steel ping-pong sample, and relates to the field of steel analysis. First, the cord steel ping-pong sample is annealed to refine the crystal structure and eliminate the structure heterogeneity. Secondly, a milling machine is used to remove the oxide layer on the surface of the sample. Then, carbides are refined by adding dilute nitric acid and dilute hydrochloric acid separately and adding deionized water intermittently during the sample dissolution process. A medium-speed quantitative filter paper and acid washing filtration method are used to reduce possible inclusions, thereby improving the stability and accuracy of the result. Finally, the best spectral line is selected on an inductively coupled plasma emission spectrometer to establish an analysis method for ultra-low acid-soluble aluminum in a cord steel ping-pong sample. The method can be used for detecting acid-soluble aluminum with a content of 0.0002% to 0.04% in cord steel, and solves the problem that there is no analysis method for ultra-low acid-soluble aluminum in steel in the prior art.