615 results about "Emission Spectrometer" patented technology

An apparatus (10) for analyzing lubricant oils and functional fluids includes an optical emission spectrometer (OES) (26) having a substantially continuously valued wavelength versus intensity output (140). The OES (26) analyzes light captured from a spark emission stand (58) through which the fluid sample is flowed. An expert system (160-172) operates according to a set of Rules that corrects background influence from the electrodes, and generates diagnostic text (174) for an operator based on the information about the fluid sample provided by the OES (26) and other measurement devices. The apparatus (10) is reduce in size, weight and cost.

The invention discloses an analysis and detection method for impurity elements such as aluminum, calcium, ion, molybdenum, niobium, titanium, tungsten and the like in chromium carbide. The method comprises adding a chromium carbide sample into a dissolving cup, adding hydrofluoric acid, sulphuric acid and nitric acid sequentially, stirring, charging into a sealed high-pressure jar; putting the sealed high-pressure jar into a microwave extinguishing instrument for two times of microwave extinguishment; taking the high-pressure jar out of the microwave extinguishing instrument for cooling, transferring the dissolved chromium carbide liquid sample into a volumeric flask, diluting to a predetermined index, stirring; preparing a chromium substrate matched mixed standard solution series of aluminum, calcium, iron, molybdenum, niobium, titanium and tungsten; measuring element emission power of aluminum, calcium, iron, molybdenum, niobium, titanium, tungsten or the like in a blank liquid sample, a chromium carbide liquid sample and the prepared series mixed standard solution by an inductively coupled plasma atomic emission spectrometer in the same time, obtaining the analysis result by checking a standard working curve or by linear equation calculation. The invention adopts two times of microwave extinguishment using the mixed acid, solves the problem of hardness in chromium carbide decomposition, having a measurement range from 0.010% to 1.00%, which is high in accuracy, and good in precision.

The invention belongs to a technique for analyzing elements of an alloy, and relates to a method for measuring the contents of aluminum, titanium, manganese, nickel, tungsten and iron in a cobalt-base alloy. The method adopts an inductively coupled plasma atomic emission spectrometer and is different according to different measured elements and different tungsten contents; when high-content tungsten is dissolved, the volume of test solution needs to be maintained between 20 and 40 mL, or the tungsten is easy to be separated out; by performing interference experiments and spectrogram analyses, the method finds the optimal analytical line, overcomes the interferences caused by a plurality of elements such as major elements of cobalt, chromium, tungsten and the like in the cobalt-base alloy, and improves the measuring accuracy; the sample dissolving speed is accelerated, and the sample dissolving time is shortened to 2 hours from about two or three days; and the method has wide measuring ranges including: 0.05 to 0.30 percent of the aluminum, 0.05 to 0.30 percent of the titanium, 0.05 to 1.00 percent of the manganese, 0.05 to 24.00 percent of the nickel, 0.05 to 20.00 percent of the tungsten, and 0.05 to 3.00 percent of the iron.

The invention relates to a method for detecting the element content in alloy or ore by utilizing an ICP emission spectrometer, comprising the following steps: placing the alloy or the ore in solvent,heating and leading the alloy or the ore to be dissolved fully in solution to obtain mixed solution; diluting the mixed solution to obtain test solution; selecting the optimal analysis line of each element according to the composition of substrate of the alloy or the ore; preparing a set of corresponding standard solutions with the concentration sequencing from low to high according to the concentration index of each element in the alloy or the ore; introducing the standard solutions to the ICP emission spectrometer to measure the emission light intensity of the element analysis line and to draw a standard curve; introducing the test solution to the ICP emission spectrometer to measure the emission light intensity corresponding to each element; and determining the content of each element according to the standard curve. The method can detect simultaneously the content of the required element and oxide only by one solution, therefore, the invention has simple operation, shortened measuring cycle, stable detection results with high accuracy degree.

A microplasma emission spectrometer is described that includes a chamber for confining a sample volume of gas. A microplasma source that includes a resonant antenna structure generates a microplasma in the chamber from the sample volume of gas. A RF power supply provides power to the resonant antenna structure that generates the microplasma from the sample volume of gas. A spectrally sensitive detector is optically coupled to the microplasma. The entrance of the spectrally sensitive detector has dimensions and is positioned so that emissions from at least one-tenth of a total volume of the microplasma are transmitted through the entrance of the spectrally sensitive detector.

The present invention facilitates improvements in laser ablation of solid samples to be analyzed by an external inductively coupled plasma (ICP) emission spectrometer, ICP/mass-spectrometer (ICP-MS), or flowing afterglow (FAG) mass spectrometer (FAG-MS) for elemental analysis (ICP and ICP-MS) or molecular analysis (FAG-MS). A novel invention mirror-with-hole beam combiner eliminates chromatic aberration in the invention sample view and allows rad-hardening the laser ablation invention for use in a radiation hot cell for analysis of high activity nuclear waste. Many other novel invention rad-hardening attributes facilitate a comprehensive rad-hardened laser ablation system (the world's first). In other embodiments, invention novelties include unusually large homogeneous focused laser spot diameters, unusually long laser objective lens focal length, wide range operationally variable laser path length with built-in re-alignment, operationally variable demagnification ratio and diameter of the focused laser spot, the use of significantly higher powered SMR lasers in a large spot diameter to facilitate high sensitivity bulk analysis of solid samples, a demountable and gravitationally self-sealing stack assembly laser ablation cell, and the world's first auto-samplers (mechanized sample changers) for analytical laser ablation.

A multifunction spectrograph based on surface plasma wave consists of light source, modulation unit of incoming light, modulation unit of angle, sample conveying unit, sample electromagnetic coupling reactor, detection unit of emission light, detection unit of reflection light, data collection/management unit and temperature control unit. It is featured as coupling and resonating plasma at surface of incoming-light wave resultant sensing film by said spectrograph for making fade field at surface of said sensing film be intensified so as to excite scattered light by utilizing intensified fade field.

The invention discloses a method that can simultaneously analyze various elements, aims at solving the defects that currently the analysis of various elements cannot be finished at one time, and consequently the analysis time is long and the reagent usage is large, and discloses a method that can simultaneously measure the elements of silicon, aluminum, calcium and barium and comprises the following steps: a test sample is preprocessed through the acid dissolution method, microwave-digested, naturally cooled, and then placed into a volumetric flask with scales, diluted and shaken until well distributed, a solution with a standard working curve is prepared, an atomic emission spectrograph of inductance coupled plasmas is started and led to reach the measurement requirement, a plasma torch is lighted, the relative standard deviation of the plasma torch is led to be less than 5 percent, wavelength of each element is chosen, the working curves are plotted, and the content of each element is computed. The method combines the microwave digesting sample dissolution technique with the atomic emission spectrograph of inductance coupled plasmas, can simultaneously analyze nine elements including silicon, etc., is accurate and quick, has greatly reduced reagent usage, and reduces the environmental pollution that is caused by chemical reagents.

The invention relates to a method for measuring microelements in high titanium blast furnace slag, which comprises the following steps: firstly, adopting an alkali fusion method to pre-process samples, and leading the samples to be totally conversed into soluble salt, and preparing into sample solution, secondly, preparing standard solution of iron, manganese, vanadium and phosphor with different concentrations, thirdly, respectively measuring the spectral line strength of calcium in the standard solution of iron, manganese, vanadium and phosphor with different concentrations, utilizing the concentration of elements to be the abscissa and the spectral line strength to be the longitudinal coordinate to draw a working curve, fourthly, measuring the intensity of the spectral lines of iron, manganese, vanadium and phosphor in sample solution under the condition which is the same to the step three, and calculating and assuring the content of the four elements in each sample solution according to the working curve. The invention has the advantages that the method is simple and fast, which has little dosage of agents and samples, and can simultaneously measure a plurality of elements. The method shortens analysis time, and lowers test cost.

The invention relates to the technical field of ferrous metallurgical analysis, and discloses a method for measuring a rare earth component in a rare earth magnesium alloy. The method comprises the following steps: dissolving a sample through a nitric acid and a hydrofluoric acid; fuming the sample through a perchloric acid; diluting the sample to a certain volume; introducing atomization solution into an inductively coupled plasma atomic emission spectrometer; measuring the intensity of a spectral line to be tested; and calculating the concentration of the corresponding element of the substance to be tested according to the intensity of the spectral line which is measured by the standard substance at known concentration. The method has the advantages of conveniently, quickly and accurately analyzing the rare earth component in the rare earth magnesium alloy and ensuring smooth production.

The invention discloses a method for determining the impurity content in high-titanium slag, and belongs to the metallurgical chemical field. According to the method, a high-titanium slag sample is molten by a mixed flux; a frit is leached by a sulfuric acid solution to prepare a test solution; and the impurity component in the diluted high-titanium slag test solution is determined by an inductive coupling plasma emission spectrometer. With the invention, the content of the impurity component in high-titanium slag can be determined accurately, simply, and rapidly.

The invention belongs to a technique for analyzing trace elements of an alloy, and relates to a method for measuring the content of boron in a cobalt-base alloy. By adopting an inductively coupled plasma emission spectrometer and treating a sample of the cobalt-base alloy in particular a high-tungsten sample by using 20mL of hydrochloric acid, nitric acid and hydrofluoric acid, the method solves the puzzling problems that the past dissolved sample has large reagent dosage and high reagent blank and cannot be measured normally by an instrument; by performing interference experiments and spectrogram analyses, the method finds the optimal analytical line, overcomes the interferences caused by a plurality of elements such as major elements of cobalt, chromium, tungsten and the like in the cobalt-base alloy, and improves the measuring accuracy; the method has wide measuring ranges, the measuring lower limit is 0.002 percent, and the measuring upper limit is 0.20 percent and is 101 times of the measuring lower limit; and the method can perform measurement quickly, is simple and convenient to operate, and saves a large quantity of manpower and material resources.

The invention discloses a method for measuring the content of silicon and phosphorus in ferromanganese iron by an inductively coupled plasma spectrum emission instrument. The method comprises the following steps of: preparing an atomized solution of a ferromanganese iron sample and standard solutions comprising a manganese standard solution, a phosphorus standard solution and a silicon standard solution; and introducing the atomized solution into an inductively coupled plasma atomic emission spectrometer, and measuring the spectral line intensity of an element to be measured, thus obtaining the content of silicon and phosphorus in the ferromanganese iron sample according to the spectral line intensity measured via the standard solutions with given concentrations. Due to the technical scheme disclosed by the invention, the content of silicon and phosphorus in ferromanganese iron can be rapidly and accurately measured.

The invention relates to a method for analyzing and measuring typical metal in a circuit board of discarded electrical equipment and relates to the technology for pre-treating the circuit board of discarded electrical equipment and detecting and analyzing the content of the typical metal element. The method comprises the following steps: collecting a sample of the circuit board part of discarded electrical equipment and then performing the operations of surface dressing, cleaning, and rough and fine grinding on the sample; adding a proper amount of digestion reagent into the prepared sample, digesting the prepared sample by using a microwave digestion device and then extracting metal matter from the discarded circuit board; and using an inductively coupled plasma emission spectrometer to analyze the nature and quantity of the digested sample. According to the method, the operations of sample grinding and digesting are simple, the reagent consumption is less, the analysis result is accurate and reliable, the detection concentration range is wide, the technical problem of difficultly pre-treating the circuit board sample is solved, and the method is suitable for quickly identifying and accurately measuring the typical metal elements in the circuit boards of various discarded electrical products (such as televisions, refrigerators, washing machines, computers, printers, and the like) and the typical metal elements in the corner wastes generated in the circuit board production process.

The invention discloses a method for detecting the content of a main element in carbon coated lithium iron phosphate or lithium manganese ferric phosphate. The method comprises the steps of 1 sample pretreatment, wherein a sample to be detected is cleared up through acid and transferred, volume metering and still standing are carried out, and after a solution is layered, a middle clear part is sucked as liquid to be detected; 2 standard curve drawing, wherein a series of mixed standard solutions are prepared according to the variety of the main element to be detected, an inductive coupling plasma emission spectrometer is utilized for carrying out testing, and a standard curve is drawn; 3 main element content measuring, wherein the inductive coupling plasma emission spectrometer is used for measuring the content of the main element in the solution to be detected. The pretreatment process is simple, the analysis result is accurate, the content of the main element in carbon coated lithium iron phosphate or lithium manganese ferric phosphate can be measured fast, accurately and quantitatively, and reliable guarantees are provided for improving the product quality of lithium iron phosphate and lithium manganese ferric phosphate and controlling the intermediate technological process.

The invention relates to a method for detecting the microelement content of liquid milk or milk powder. The method comprises the steps as follows: firstly, a standard curve is made; secondly, a sample is detected; thirdly, the detected result of the sample is compared with the standard curve, and the content of the microelement in the sample is obtained; and a detection apparatus is an inductive coupling plasma emission spectrometer. Through the diffusion function of cesium chloride, the surface activity of the sample is changed by utilizing triton x-100, and the sample is added to beryllium standard liquid to be compared, and atomized through an instrument atomizing chamber and is quantified by adopting a multi-reaction monitoring mode. The instrument detection limit of the method is 0.024 to 0.21 Mu g/ml, in an element linear range, a correlation coefficient r is above 0.999, and the recovery rate is 86.8 percent to 103.8 percent. The method has the advantages that the content of microelements in the liquid milk and the milk powder can be rapidly and accurately measured by the method, the probability of the element loss and the element pollution in the sample preparation process is low, results are accurate and reliable, the repeatability is good, and the sensitivity is high.

The invention relates to the technical field of ferrous metallurgical analysis, in particular to a method for measuring contents of aluminum, calcium, barium, strontium, and phosphorus in silicon-calcium-barium alloy by ICP (inductively coupled plasma). The method comprises the following steps of: dissolving a sample with nitric acid and hydrofluoric acid, fuming with sulfuric acid, diluting to a certain volume, and introducing an atomized solution into an inductive coupling plasma atomic emission spectrometer to measure the intensity of a spectral line to be measured; and solving the concentration of elements corresponding to substances to be measured based on the measured spectral line intensity of known concentration standard substances. The method has the advantages of no pollution and capability of analyzing and determining the content of the calcium, the barium, the aluminum, the phosphorus and the strontium in the silicon-calcium-barium alloy and meanwhile, separating the barium and the strontium which can not be separated by a chemical analytical method.

The invention relates to a method for rapidly determining zirconium content in silicon-zirconium alloy, belonging to the technical field of chemical analysis tests. The method comprises the following steps: dissolving pure iron or silicon iron as matrix, adding standard solutions with different amounts of zirconium to prepare a standard solution; determining the standard solution by virtue of an ICP-OES to prepare a standard curve; dissolving a sample with one or more of nitric acid, hydrochloric acid, hydrofluoric acid and perchloric acid, and diluting with water to achieve a certain volume; introducing the solution into the ICP-OES to determine to-be-determined spectral line intensity; determining the concentration of a to-be-determined element on a calibration curve. The zirconium content range in the silicon-zirconium alloy can be determined to be 0-30%; the standard solution prepared by the method is similar to sample solution matrix; the matrix effect is removed; the problems of fussy chemical analysis operation and slow analysis speed are solved by virtue of a high-precision analysis instrument; and the method has the advantages of being simple, fast, high in accuracy and precision and the like.

The invention provides a method for determining arsenic, tin and antimony in ferromolybdenum, which belongs to the field of quantitative analysis in analytical chemistry. The method for determining arsenic, tin and antimony in ferromolybdenum comprises the steps of dissolving a ferromolybdenum specimen in mixed acid of hydrochloric acid and nitric acid, using standard serial solutions to draw a working curve on an inductively-coupled plasma atomic emission spectrometer, deducting interference among elements and background interference through a computer program correction mode and determining arsenic, tin and antimony which are trace detrimental impurity element in a specimen solution. The method does not need to perform separation, enrichment and other fussy operation during specimen pretreatment and only needs to suck the ferromolybdenum specimen solution into an instrument for determination, and the percentage content of trace arsenic, tin and antimony in the specimen can be simultaneously displayed after tens of seconds. The content range that can be directly determined by the method is as follows: 0.005 to 1.00 percent of arsenic, 0.001 to 0.20 percent of tin and 0.001 to 0.10 percent of antimony.

The invention discloses a method for analyzing arsenic content in a glass refining agent, which comprises the following steps: processing samples by a potassium permanganate preoxidation-hydrofluoric acid wet digestion method to obtain a sample digestion solution; measuring the content of arsenic in the digestion solution by an inductance coupling plasma atomic emission spectrometry. By using potassium permanganate as a pre-oxidizing agent to carry out routine wet acid digestion on glass refining agent samples, the method can effectively avoid volatilizable loss of low-valent arsenic components in the preliminary processing of the samples, therefore, a routine inductance coupling plasma atomic emission spectrometer can be used to directly measure the content of the effective content-arsenic in the glass refining agent without allocating a hydride generator or an atomic fluorescence spectrometer. The method has the advantages of high operability, high analysis speed, high accuracy and favorable sensitivity and repetitiveness.

The invention discloses a method for determining precious metal in platinum-group metal ores. The method comprises the following steps: (1) obtaining a nickel-sulfonium button from a nickel-sulfonium fire assay enriching sample; (2) grinding the nickel-sulfonium button with a grinder; (3) adding the ground nickel-sulfonium button in a hydrochloric acid solution and heating for dissolving to remove base metal and sulfonium from the nickel-sulfonium button; (4) adding a reductant and a coprecipitator to the solution obtained from the step (3) to recover a small quantity of precious metal lost in the solution; (5) performing suction filtration at negative pressure to obtain a precious metal precipitate; (6) dissolving the precipitate in the step (5) together with a filtering membrane with aqua regia in a water bath and diluting with pure water to a fixed volume; (7) drawing calibration curves of platinum, palladium, gold, rhodium, ruthenium and iridium by an ICP-OES (Inductively Coupled Plasma Optical Emission Spectrometer) and determining the intensity of spectral lines of platinum, palladium, gold, rhodium, ruthenium and iridium in the sample solution; (8) automatically calculating the content of to-be-detected elements by a computer according to the calibration curves and a sample information table. The method has good stability and high result accuracy degree. According to the method, six precious metal elements can be determined simultaneously just by one-time sample weighing and pretreatment, the working efficiency is increased greatly and the detection cost is lowered.

The invention provides a method for determination of silicon content in ferro-aluminum manganese, comprising the following steps: dissolving a sample to be tested with hydrochloric acid and nitric acid, introducing the solution into an inductively coupled plasma atomic emission spectrograph, and automatically calculating and displaying the concentration of silicon in the sample of ferro-aluminum manganese according to the standard working curve for silicon stored in the spectrograph. The method of the invention implements the working curves comparison and automatic analysis and verification with the inductively coupled plasma atomic emission spectrograph, so that the working process is greatly simplified with high analysis speed and high accuracy. The standard working curve for calibration of silicon solution is automatically drawn by an analysis software, and the linear correlation coefficient between the sample of ferro-aluminum manganese and the standard working curve is greater than 99.9% so as to provide reliable analytical data for manufacturing plants in a fast and accurate manner; moreover the reagents are less used in terms of category and dosage so as to relatively reduce the environmental pollution.

A method and device are provided for analysis of a molten material using optical emission spectrometry. The molten material may be, for example, a molten metal, such as casting iron or steel, or slag, glass, or lava. A sensitive element is used having at least one emission spectrometer and at least one excitation device to effect the excitation of the molten material and to enable the partial or complete generation of a radiation to be analyzed by a spectrometer present in the sensitive element. The sensitive element is brought into contact with the molten material and transmits information, which contains analysis elements supplied by the spectrometer. An immersion sensor is also provided for carrying at least part of the device for performing the analysis method.

The invention relates to a method for using a plasma atomic emission spectrometer to measure impurities in high-purity gold, which comprises the following steps: weighing one unit of sample in a bunsen beaker, adding aqua regia to dissolve, replenishing hydrochloric acid deionized water to do constant volume to a scale after dissolving, respectively getting sample solution in more than two colorimetric tubes, solution in each tube is 15ml, adding gold standard solution which is mixed by elements according to a multiple relation in turn, doing constant volume by deionized water, starting the plasma atomic emission spectrometer, starting a circulating water pump, opening analytic control software, entering a 'standard addition method' control procedure, choosing a spectral line for measuring in a spectral line base, setting the concentration value of curved lines, scanning a whole band, sucking sample solution in each colorimetric tube in an instrument in turn according to the sequence that the concentration is from low to high, clicking a feeler switch to get an initial curve point of the point after sucking in each time, assuring curved lines, and leading the linear coefficient to be more than 0.99, outputting the concentration value result of each determined element, and calculating the result of the percentage content of each determined element according to the calculating formula.