Method for measuring impurities in 4-5N high-purity tin by plasma atomic emission spectrometer

An atomic emission and plasma technology, which is used in thermal excitation analysis, material excitation analysis, etc., to achieve the effect of fast measurement speed, reduced workload, and high detection authenticity.

Inactive Publication Date: 2012-07-11
BEIJING INST OF NONFERROUS METALS & RARE EARTH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, how to use the inductively coupled plasma emission spectrometer to measure the impurities in 4-5N high-purity tin has n

Method used

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  • Method for measuring impurities in 4-5N high-purity tin by plasma atomic emission spectrometer
  • Method for measuring impurities in 4-5N high-purity tin by plasma atomic emission spectrometer
  • Method for measuring impurities in 4-5N high-purity tin by plasma atomic emission spectrometer

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Embodiment 1

[0069] Detection of impurities in a sponge of high-purity tin:

[0070] The specific determination method steps are as follows:

[0071] 1. Clean the sample

[0072] Weigh about 10g of high-purity tin, process it into granules, place it in a quartz beaker, soak it with (1+1) hydrochloric acid (excellent grade) and boil it at 60°C, use it after cooling, and remove it with 18.2 megohm level Rinse several times with deionized water, dry in a plexiglass glove box, and set aside.

[0073] 2. Sample dissolution

[0074] Weigh one unit of sample into a 200ml quartz beaker, add aqua regia, heat at low temperature to dissolve, after complete dissolution, add 5ml hydrochloric acid when heated to dryness, continue to dissolve, repeat this process twice, and finally add 5ml hydrochloric acid to transfer to 100ml capacity In the bottle, dilute to the mark with deionized water to obtain the sample solution, the concentration value is C;

[0075] 3. Instrument operation

[0076] After p...

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Abstract

The invention provides a method for measuring impurities in 4-5N high-purity tin by a plasma atomic emission spectrometer, comprising the following steps of: weighing one unit of a sample, dissolving by adding aqua regia into a beaker, completely dissolving, replenishing hydrochloric acid, continuously heating at low temperature, repeating twice, finally replenishing hydrochloric acid, putting into a 100mL volumetric flask, and setting the volume at degree scale by deionized water for later measurement; remaining a pre-prepared standard work curve with the concentration from low to high for later use; and turning on the plasma atomic emission spectrometer, turning on a water circulating pump, turning on analysis control software, entering a 'standard curve method' control program, selecting a spectrum line for detecting in a spectrum line bank, setting a curve concentration value, carrying out full-wave band scanning, sequentially sucking sample solution of the standard work curve into the spectrometer according to a sequence that the concentration is from low to high, clicking a test key to obtain an initial curve point of the point after suction at each time, confirming the curve, so as to enable the linear coefficient of the curve to be more than 0.99, sucking solution to be measured into the spectrometer, outputting concentration value results of each element to be measured, and obtaining percentage content results of each element to be measured according to a calculation formula.

Description

technical field [0001] The invention relates to a measurement technology for heavy metal materials, in particular to a method for measuring impurities in 4-5N high-purity tin with a plasma atomic emission spectrometer. Background technique [0002] High-purity tin is mainly used to prepare compound semiconductors, high-purity alloys, superconducting material solders and dopants for compound semiconductors. It has the characteristics of good ductility, good plasticity and corrosion resistance. Tin-containing alloys and organic compounds are widely used in atomic energy industry, aviation, shipbuilding, chemical industry, nuclear, medical equipment, ceramic glaze, printing, pesticides, preservatives, antifouling agents, flame suppression agents, catalysts, etc. With the development of analysis and testing technology at home and abroad, various testing companies have correspondingly improved the analysis and testing level of their products in order to adapt to the fierce marke...

Claims

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Application Information

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IPC IPC(8): G01N21/73
Inventor 郅富国王冉姚映君
Owner BEIJING INST OF NONFERROUS METALS & RARE EARTH
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