41 results about "Metal analysis" patented technology

Methods of analysis, and compositions relating to such, to determine the presence or absence of an analyte in a sample utilizing a composite substrate which facilitates surface enhanced Raman spectroscopy through the use of ‘hot spots’ of the form ‘metal / analyte / metal’ are presented. Additionally, substrates which contain ‘hot spots’ of the form ‘metal / analyte / metal’ and substrates which facilitate the formation of ‘hot spots’ of the form ‘metal / analyte / metal’ are presented as well as methods for making these substrates.

Quartz member such as a quartz tube for semiconductor manufacturing equipment capable of heat treating a substrate to be treated without causing contamination, a manufacturing method of such quartz member, thermal treatment equipment furnished with such quartz member, and an analysis method of metal in quartz member are provided. A quartz specimen is immersed in hydrofluoric acid to expose a layer to be analyzed located at a prescribed depth. On an exposed surface, a decomposition liquid such as hydrofluoric acid or nitric acid is dripped to decompose only an extremely thin layer to be analyzed, followed by recovering of the decomposition liquid. The decomposition liquid is quantitatively analyzed by use of atomic absorption spectroscopy (AAS) or the like to measure an amount of metal contained in the decomposition liquid. From a difference of thicknesses before and after the decomposition and an area of dripped decomposition liquid, a volume of a decomposed layer to be analyzed is obtained. From this and the amount of metal contained in the decomposition liquid, a concentration of metal contained in the layer to be analyzed, in addition a diffusion coefficient of a layer to be analyzed is calculated. With thus obtained diffusion coefficient as an index, quartz material in which metal diffuses with difficulty is sorted out. With thus sorted quartz material, a quartz member used for semiconductor manufacturing equipment such as a quartz tube is manufactured.

Methods of analysis, and compositions relating to such, to determine the presence or absence of an analyte in a sample utilizing a composite substrate which facilitates surface enhanced Raman spectroscopy through the use of ‘hot spots’ of the form ‘metal / analyte / metal’ are presented. Additionally, substrates which contain ‘hot spots’ of the form ‘metal / analyte / metal’ and substrates which facilitate the formation of ‘hot spots’ of the form ‘metal / analyte / metal’ are presented as well as methods for making these substrates.

Methods for determining the amount of at least one metal analyte present in a liquid or gas sample of a halosilane supply (e.g., a chlorosilane supply) are disclosed herein. A sample of a halosilane supply is contacted and reacted with an aqueous hydrofluoric acid solution to produce a liquid reaction mixture. Liquid from the liquid reaction mixture is evaporated under controlled temperature and pressure conditions to near dryness. The nearly-dry residue is prepared for spectral analysis. The presence of a detectable amount of at least one metal analyte is determined for the sample.

The present invention provides a pre-treatment apparatus for an analytical metal sample, the apparatus including (1) a treatment chamber having a sample charging port which can be opened and closed and provided at the top of the chamber, a sample discharging port which can be opened and closed and provided at the bottom of the chamber, and a gas inlet and gas outlet, (2) a sample carrying bar joined to a sample holder also used as a sputtering electrode, and provided to pass through at least one side wall of the treatment chamber so as to be substantially horizontally movable and axially rotatable, and (3) a sputtering counter electrode at least having portions arranged opposite to each other in a region not inhibiting the charge and discharge of an analytical metal sample so that the sample holder can be arranged in the counter electrode. The present invention also provides a pre-treatment method capable of simply cleaning the surface of the analytical metal sample by using the pre-treatment apparatus and preventing re-contamination of the cleaned sample by exposure to the air or the like. Furthermore, the present invention provides an analysis apparatus provided with the pre-treatment apparatus to permit high-accuracy quantitative determination of trace elements of metals.

A system and method for detecting, measuring, and analyzing for metallic impurities in pharmaceutical drugs and compounds utilizes an x-ray fluorescence system. The system and method may be co-located with a pharmaceutical manufacturing process for in-line continuous monitoring of metal impurities. The pharmaceutical products may be in a form selected from a powder, slurry, pill, tablet, and gel.

The invention discloses an online water heavy metal analyzer. The heavy metal analyzer comprises an industrial-grade integrated control unit, a detection unit, an automatic sampling unit, a water sample pretreatment unit and an external input / output unit. The online water heavy metal analyzer provided by the invention can utilize the industrial-grade integrated control unit for automatically controlling the detection unit, the automatic sampling unit, the water sample pretreatment unit and the external input / output unit through a communication interface. According to the online water heavy metal analyzer, the modularized idea is adopted, the number and the types of the units can be increased and reduced conveniently, meanwhile, components inside the units are independent and also can be increased and reduced. Due to the adoption of a low-cost standard network cabinet, the overall cost can be lowered and convenience can be brought for the data processing.

The invention, which belongs to the field of platinum group metal analysis and detection, discloses a method for accurately detecting contents of platinum, palladium and rhodium in a waste automobileexhaust catalyst. According to the invention, burdening, smelting trapping, ash blowing separation of metal bismuth and platinum, palladium and rhodium content detection are performed based on bismuthtest gold pyrometallurgy metal enrichment technological process and the process optimization is performed, so that problems of matrix interference and incapability of ash blowing in the traditional method are solved and a defect that platinum, palladium and rhodium in the waste automobile tail gas catalyst are difficult to effectively capture, separate and detect by adopting the existing method is overcome. Therefore, the recovery rate of platinum, palladium and rhodium is increased and the accurate detection of the contents of platinum, palladium and rhodium in the waste automobile tail gascatalyst is ensured.

The invention discloses a portable water heavy metal analyzer and an analytic method thereof. The analyzer is formed by an electrolytic device and an analyzer main body, wherein the electrolytic device comprises a top cover, an electrode mounting base, a transparent window, a pedestal, a stirring motor, electrodes, a stirring rod and an electrolytic cup; and the analyzer main body comprises an outward interface and an internal circuit module. All the parts of the analyzer harmoniously work under the control of an embedded system to automatically control the enriching, stirring, standing and dissolve-out processes. The analyzer and the analytic method have the advantages of realization of the rapid and accurate detection of the concentrations of heavy metal ions in water, realization of the simultaneous generation of test data and a test place, and avoiding of the generation of artificial recording or statistic errors. The analyzer can be directly used for the emergent and rapid detection of onsite heavy metal pollutions in the field.

The present invention discloses a network online water quality heavy metal analyzer, which comprises an industrial grade integrated control unit, a detection unit, an automatic sampling unit, a water sample pre-treatment unit, an external input and output unit, and a network module, wherein the industrial grade integrated control unit can automatically control the detection unit, the automatic sampling unit, the water sample pre-treatment unit and the external input and output unit through communication interfaces. According to the present invention, the modularization idea is adopted so as to conveniently expand and reduce the number and the type of the units, assemblies in the units are independent so as to be conveniently expanded and reduced, the low cost standard network cabinet is adopted so as to reduce the whole cost and conveniently process data, and to adapt to remote control requirements, the network module can conveniently perform data transmission through the wired and wireless network.

A soil for metal analysis having a high water content percentage of 40% or above is dried to a water content percentage of 20% or below within a short period of time. A filter paper (5) is disposed on an internal bottom face plate (2) of nutsche (1). Powder of a highly water absorbent resin material (6) is uniformly spread (charged) on the superior surface thereof. Further, a filter paper (7) is disposed thereon. A soil sample of high water content percentage is stuffed on the superior surface thereof to thereby attain predrying to a water content of about 30%. Thereafter, ethanol is added to the predried soil sample, agitated and placed on a reception pan (38). The reception pan (38) is put in a drying chamber (37). Water is fed into a reaction vessel (42) filled with calcium oxide or barium oxide by the use of a syringe (43) to thereby react the calcium oxide or barium oxide with water.The reception pan (38) is heated by the then generated reaction heat to thereby attain postdrying to a water content percentage of 20% or below.

The invention relates to a heavy metal analysis detection device, particularly relates to a portable trace heavy metal ion concentration detecting pen, and aims to solve the problem that an existing detecting device is not suitable for field quick detection due to large size, expensive instrument, high operation cost, complicated detection steps and carrying inconvenience. The detecting pen comprises a hollow penholder, wherein an electrode assembly, a spring, a button and a stripping voltammetry-based detection circuit are arranged in the hollow penholder from bottom to top sequentially; the spring sleeves the electrode body of the electrode assembly, and the lower end of the spring is clamped on an annular spring bulge on the inner wall of the hollow penholder; the button is formed by an annulus body and a stirring handle fixed on the outer ring of the annulus body; the annulus body of the button is fixed at the upper end of the electrode body of the electrode assembly in a sleeving manner; and the stirring handle of the button extends out of an L-shaped hole in the hollow penholder. The portable trace heavy metal ion concentration detecting pen is small and portable, is quick and safe to operate, has the advantage of short detection time, high accuracy and high integrality, and is especially applicable to field detection.

The invention discloses a metal powder core welding wire for atmosphere corrosion resistant fire-resistant steel. The metal powder core welding wire comprises the following chemical components in percentage by weight: 0.02-0.08% of C, 0.43-1.5% of Mn, 0.20-0.80% of Si, 0.72-2.0% of Ni, 0.28-0.8% of Mo, 0.1-0.5% of Cu, 0.002-0.008% of B, 0.02-0.09% of Ti, 0.006-0.01% of S, 0.008-0.014 % of P, and the balance Fe. The invention relates to the technical field of welding materials. The metal powder core welding wire for the atmosphere corrosion resistant fire-resistant steel is characterized in that weld metal has high-temperature resistance and atmosphere corrosion resistance, and the requirement of low-temperature impact toughness is higher than the requirements of steel with the same grade;the metal analysis welding wire gives consideration to the welding of fire-resistant and weather-resistant steel, and meanwhile, obtains the weld metal with excellent low-temperature toughness throughusing the metal powder core welding wire; and through optimal combination of all elements in the metal powder core welding wire, the composition of alloy elements in the metal powder core welding wire preferably reaches the welding requirements of the fire-resistant and weather-resistant steel.

The invention relates to a heavy metal analysis detection device, particularly relates to a portable trace heavy metal ion concentration detecting pen, and aims to solve the problem that an existing detecting device is not suitable for field quick detection due to large size, expensive instrument, high operation cost, complicated detection steps and carrying inconvenience. The detecting pen comprises a hollow penholder, wherein an electrode assembly, a spring, a button and a stripping voltammetry-based detection circuit are arranged in the hollow penholder from bottom to top sequentially; the spring sleeves the electrode body of the electrode assembly, and the lower end of the spring is clamped on an annular spring bulge on the inner wall of the hollow penholder; the button is formed by an annulus body and a stirring handle fixed on the outer ring of the annulus body; the annulus body of the button is fixed at the upper end of the electrode body of the electrode assembly in a sleeving manner; and the stirring handle of the button extends out of an L-shaped hole in the hollow penholder. The portable trace heavy metal ion concentration detecting pen is small and portable, is quick and safe to operate, has the advantage of short detection time, high accuracy and high integrality, and is especially applicable to field detection.

The invention belongs to the technical field of metal analysis, and particularly relates to a method for analyzing and quantifying total carbon in a gold material, which comprises the following stepsof: weighing a sample, heating in vacuum, precisely weighing for the first time, cleaning and removing carbon, precisely weighing for the second time and calculating the total carbon. According to themethod, the carbon element dissolved in the gold can be converted into a black film floating on the surface of the gold, removal is convenient, the obtained total carbon content is direct and accurate, and commercial application is facilitated.

A trade metal analysis detector and method of operating the same to detect metals in various fluid samples using boron doped diamond working electrodes.

The invention relates to the technical field of atmospheric sampling and detecting devices, in particular to an automatic cruise type atmospheric heavy metal sampling and detecting device based on an unmanned aerial vehicle. The device comprises: an unmanned aerial vehicle; a heating bin assembly arranged on the bottom rack of the unmanned aerial vehicle; an open air inlet pipe arranged at the air inlet end of the heating bin assembly through a flange; a filter screen arranged in the heating bin assembly; an air entraining assembly arranged in the heating bin assembly; a three-way gas control assembly; a heavy metal analyzer; a first air extraction mechanism; a sample storage mechanism arranged at the air outlet end of the first air extraction mechanism; and a cleaning device, wherein the output end of the cleaning device is communicated with the interior of the heating bin assembly. According to the technical scheme, atmospheric air can be sampled, the content of various heavy metals in the air can be analyzed in a targeted manner, and different sample air can be preserved.

The invention discloses a fusion preparation method of a vanadium-iron alloy fuse piece in the technical field of metal analysis and detection. The fusion preparation method comprises the following steps of firstly, weighing a certain amount of lithium tetraborate, lithium carbonate, an oxidizing agent and a test material in a filtering paper bag, performing uniform mixing, and wrapping to form aspherical shape; secondly, placing the raw materials in a porcelain crucible taking graphite powder as a substrate in advance, and performing pre-oxidization on the raw materials by a two-step temperature rising and one-step temperature reduction method; and finally, placing the raw materials in a platinum gold crucible to fabricate a glass sheet to be measured. The fusion preparation method has the beneficial effects that by application of a main solvent and the oxidizing agent in a matching way and by scientific design of a fusion temperature and fusion rate, the vanadium-iron alloy sample is completely pre-oxidized, the fused sample is uniform, has no bubbles and is not broken, and main and secondary elements are good in measurement accuracy and high in accuracy.

The invention belongs to the technical field of metal analysis, and particularly relates to a fire assaying analysis method for a gold-containing solution. The fire assaying analysis method comprisesthe steps of sampling, evaporation, Ph adjustment, heating, shaping, cupellation and constant volume setting. The fire assaying analysis method is characterized by integrating a fire assaying method,a gravimetric method and an ICP method, combining their advantages and achieving precise analysis of the gold-containing solution.

The invention relates to a preparation method and application of a high-purity rhenium standard sample for GD-MS component analysis, and belongs to the field of rare metal analysis. The method comprises the following steps: quantitatively adding corresponding simple substances or compounds of 30 impurity elements of Ag, Al, As, Ba, Be, Bi, Ca, Cd, Co, Cr, Cu, Fe, Ga, K, Mg, Mn, Mo, Na, Ni, Pb, Pt, Sb, Se, Si, Sn, Te, Ti, Tl, W and Zn into an ammonium rhenate solution, mixing, reducing, grinding, homogenizing, tabletting, shaping and sintering to obtain the pure rhenium standard sample. And carrying out uniformity test and stability test on 30 elements in the sample, and carrying out accurate valuation. The high-purity rhenium standard sample obtained through the method is regular in shape, uniform in component, good in stability, accurate in fixed value and convenient to store, and can be used for correction of high-purity rhenium trace element measurement results and monitoring of instrument and equipment states.

The invention belongs to the technical field of environmental analysis chemistry and new material preparation, and particularly relates to a covalent organic framework material of a sulfydryl functionalized beta-ketoenamine structure as well as a preparation method and application of the covalent organic framework material. When the covalent organic framework material is applied to quantitative separation and enrichment of heavy metals (Co < 2 + >, Ni < 2 + > and Cd < 2 + >) in an environmental water sample, the problems of complex matrix interference and low sensitivity of a detection instrument during analysis of trace heavy metals in the current environmental water sample can be solved, and the covalent organic framework material is stable in property, and can be utilized repeatedly.

A soil for metal analysis having a high water content of 40% or more is dried up to 20% or less in water content within a short period of time.A filter paper 5 is laid over an inner bottom surface plate 2 of a nutsche 1. Powder of a super absorbent polymer 6 is uniformly spread (filled) on an upper surface thereof. Further, another filter paper 7 is laid thereon. A soil sample with a high water content is packed on an upper surface thereof, thereupon carrying out predrying to approximately 30% in water content. After that, the predried soil sample is added with ethanol, stirred and received in a receiving pan 38. The receiving pan 38 is arranged in a drying chamber 37. Water is supplied by a syringe 43 to a reaction vessel 42 having been filled with calcium oxide or barium oxide, thereby reacting calcium oxide or barium oxide with water. The receiving pan 38 is heated by a reaction heat generated at that moment, thereupon carrying out postdrying to make the water content 20% or less.

The invention discloses a heavy metal analyzer and a coating management method, device and equipment thereof, and a medium; the method comprises the following steps: obtaining a first volt-ampere dissolution curve of an electrolyte containing a metal ion standard solution, and determining a first peak value of the first volt-ampere dissolution curve; obtaining a second volt-ampere dissolution curve of the mixed solution, and determining a second peak value of the second volt-ampere dissolution curve, wherein the mixed solution is a mixed solution of an electrolyte and a metal ion correction solution, and the solubility of the metal ion correction solution is greater than the concentration of metal ions in the electrolyte; judging whether the ratio of the second peak value to the first peak value is not greater than a preset ratio threshold value; if the ratio is not greater than a preset ratio threshold, determining that the working electrode for heavy metal analysis needs to be coated; and if the ratio is greater than a preset ratio threshold, determining that the working electrode does not need to be coated. According to the coating management method, the working electrode mercury film state can be automatically detected, regular maintenance and detection by maintenance personnel are not needed, and the labor cost is reduced.

The invention relates to the technical field of metallographic analyzers, and discloses an intelligent metallographic microscope based on a metal analyzer, which comprises an eyepiece sleeve, an eyepiece lens is fixedly connected in the eyepiece sleeve, a mercury cavity is formed in the eyepiece sleeve, and an inclined plate is fixedly connected to the left side of the mercury plate. A pull rod is fixedly connected to the right side of the mercury plate, a bearing rod is arranged on the right side of the pull rod, a buffer spring is fixedly connected to the surface of the bearing rod, a screw rod is rotationally connected to the interior of the bearing rod, a buffer plate is connected to the side face of the screw rod in a meshed mode, and an exhaust plate is fixedly connected to the right side of the bearing rod; and the side face of the exhaust plate is slidably connected with an exhaust cavity, and an air injection channel is formed in the side face of the exhaust cavity. According to the intelligent metallographic microscope based on the metal analyzer, through cooperative use of the mercury cavity and the air injection channel, the effect of avoiding blurring of an inner lens of the eyepiece when metal is observed through the microscope is achieved.

The invention discloses an online network water quality heavy metal analyzer, which comprises an industrial-grade integrated control unit, a detection unit, an automatic sampling unit, a water sample preprocessing unit, an external input and output unit, and a network module. The network online water quality heavy metal analyzer provided by the present invention can use the industrial-grade integrated control unit to automatically control the detection unit, the automatic sampling unit, the water sample pre-processing unit, and the external input through the communication interface. The output unit, the present invention adopts the concept of modularization, which can easily expand and reduce the number and types of the above-mentioned units. At the same time, the components inside the above-mentioned units are also independent of each other, and can also be easily expanded and reduced. The low-cost The standard network cabinet can reduce the overall cost and make data processing more convenient; at the same time, in order to meet the needs of remote control, the network module can conveniently transmit data through wired and wireless networks.

The invention discloses a metal analysis multi-matching instrument device, which comprises a handheld spectrum gun and a spectrum analyzer, wherein the tail part of the handheld spectrum gun is connected with a connecting pipe; the connecting pipe is connected with the spectrum analyzer; the head part of the handheld spectrum gun is provided with an iron probe; the iron probe is provided with a sealing head; the sealing head comprises rubber sealing packing leather and a connecting head connected with the iron probe; the rubber sealing packing leather is fixedly connected with the connecting head; the center of the sealing head is provided with an air hole; one side, which faces the iron probe, of the connecting head is provided with a columnar pluggable unit; the iron probe is provided with a fixed groove used for the columnar pluggable unit to be inserted; the center line of the columnar pluggable unit and the center line of the iron probe are positioned on the same straight line. The connection structure of the columnar pluggable unit and the fixed groove is optimized, the center line of the columnar pluggable unit and the center line of the iron probe are positioned on the samestraight line so as to bring convenience for aligning the columnar pluggable unit and the fixed groove, and the columnar pluggable unit can be plugged into the fixed groove.