Method for measuring impurities in pure silver by electrical inductance-coupled plasma emission spectrometer
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A plasma and inductive coupling technology, applied in thermal excitation analysis, material excitation analysis, etc., can solve problems affecting data authenticity, sample contamination, etc., and achieve the effects of short test cycle, less sample consumption, and fast analysis speed
Inactive Publication Date: 2012-07-11
BEIJING INST OF NONFERROUS METALS & RARE EARTH
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So the sample is easily "tainted", thus affecting the authenticity of the data
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Embodiment 1
[0040] Weigh 2.0000g of the sample into a quartz beaker, add 5ml of sulfuric acid, cover with a watch glass, heat to dissolve, wait until the sample is completely dissolved, add 10ml (1+4) of HCl, and boil until clear. After cooling to room temperature, filter the test solution into a 100 ml volumetric flask, add 10% hydrochloric acid, make up to the mark with deionized water, and shake well for later use.
[0041] After preheating the instrument for half an hour, turn on the circulating water pump, open the analysis control software, and set the measurement conditions: the equipment power is 1.2Kw, the cooling air flow rate is 20L / min, the auxiliary air flow rate is 2.0L / min, and the atomization pressure is 55psi (1psi=6.89 kPa), the sample lifting speed is 1.2ml / min, and the measurement integration time is 5s. Click the "ignition" button to form a stable plasma torch flame. Choose to enter the data control program, select the spectral lines of 24 kinds of elements to be mea...
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Abstract
The invention relates to a method for measuring impurities in pure silver by an electrical inductance-coupled plasma emission spectrometer, which is characterized by specifically comprising the following steps of: adding sulfuric acid to dissolve a pure silver sample to be measured; completely dissolving the sample to be measured; adding hydrochloric acid, boiling to be clear, cooling, and separating matrix silver of the sample; refining in a precipitating way; replenishing 10% of hydrochloric acid, and setting the volume to be degree scale by deionized water; and turning on the electrical inductance-coupled plasma emission spectrometer, turning on analysis control software, clicking a 'firing' button so as to form stable plasma fire, carrying out full-wave band scanning, correcting a light path, selectively entering a data control program, selecting a spectrum line of an element to be measured, setting a concentration value of a curve, measuring standard curve solution according to the concentration from low to high sequentially, and measuring so as to obtain relevant parameters at data state bars. The method has the advantages of being less in sample consumption, short in test period, multiple in analyzed element types, high in accuracy, good in reliability, high in precision, small in value adding interference, etc.
Description
technical field [0001] The invention belongs to an analysis and testing technology, in particular to a method for measuring Cu, Fe, Mn, Mg, Ca, and Zn in pure silver by using an inductively coupled plasma emission spectrometer (hereinafter referred to as ICP-AES) to adopt a method of enrichment and matrix separation. , La, Ni, Se, Te, Co, Be, Sb, As, Pb, Sn, Pd, Pt, Al, Ce, Ge, Si, In, Bi and other 24 kinds of quantitative analysis methods of trace impurities. Background technique [0002] Because silver has excellent physical properties, silver has been widely used in various industries of national economy and national defense industry. As a light-duty structural material, silver is silver in weight and strength. Various vehicles of sea, land and air, especially aircraft, missiles, rockets, artificial earth satellites, etc., use a large amount of silver. Silver is non-ferromagnetic. It is an extremely important characteristic for industrial and electronic industries. And ...
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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/73
Inventor 闫雅坤陈晓宇韩鹏
Owner BEIJING INST OF NONFERROUS METALS & RARE EARTH
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