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Method for measuring trace elements such as arsenic and antimony in industrial lead bullion according to atomic fluorescence spectrometry

A technique of atomic fluorescence spectroscopy and trace elements, which is applied in the field of analysis of trace elements in high-purity metals, can solve the problems that have not been reported in the application, and achieve the effect of less damage to the detection personnel, high degree of automation, and low detection limit

Inactive Publication Date: 2014-10-01
BAIYIN NONFERROUS GROUP
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  • Application Information

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Problems solved by technology

At present, in the detection of trace elements, atomic fluorescence spectrometry is widely used, and a large number of researchers at home and abroad have made in-depth research on it. However, the application of atomic fluorescence spectrometry to the detection of trace elements in crude lead has not been reported yet.

Method used

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  • Method for measuring trace elements such as arsenic and antimony in industrial lead bullion according to atomic fluorescence spectrometry
  • Method for measuring trace elements such as arsenic and antimony in industrial lead bullion according to atomic fluorescence spectrometry
  • Method for measuring trace elements such as arsenic and antimony in industrial lead bullion according to atomic fluorescence spectrometry

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Embodiment Construction

[0027] The implementation process of the present invention is illustrated below with a specific test process.

[0028] 1. Drug preparation:

[0029] 1.1. Hydrochloric acid: ρ1.19g / mL, superior grade.

[0030] 1.2. Nitric acid: ρ1.42g / mL, superior grade.

[0031] 1.3, 5% hydrochloric acid: The preparation method is to pipette 5mL of the above-mentioned high-grade pure hydrochloric acid into a 100mL beaker with a small amount of water, dilute to the mark and mix well.

[0032] 1.4. Carrier solution: In a 500mL beaker, add 300mL of water, then add 50mL of the above-mentioned high-grade pure hydrochloric acid, dilute to the mark, mix well, and cool to room temperature.

[0033] 1.5. Thiourea-ascorbic acid solution (50g / L-50g / L): The preparation method is to weigh 5g of superior pure thiourea and 5g of superior pure ascorbic acid respectively, dissolve them in a 100mL beaker, mix well after dissolving completely, and now Ready to use.

[0034] 1.6. Potassium borohydride solutio...

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Abstract

The invention discloses a method for measuring trace elements such as arsenic and antimony in industrial lead bullion according to the atomic fluorescence spectrometry. The method comprises the following steps: A, preparing a solution of an industrial lead bullion fine sample; B, preparing a standard arsenic solution and a standard antimony solution; C, preparing a working curve solution with the standard arsenic solution and the standard antimony solution; D, measuring the atomic fluorescence strengths of arsenic and antimony in the working curve solution with an atomic fluorescence photometer, and drawing working curves by taking the mass concentrations of arsenic and antimony as X axes, and taking the fluorescence strengths of arsenic and antimony are Y axes; E, measuring the atomic fluorescence strengths of arsenic and antimony in the sample solution with the atomic fluorescence photometer, and finding out corresponding mass concentrations of arsenic and antimony on corresponding working curves with the atomic fluorescence strengths. As a nitric acid, hydrochloric acid and thiocarbamide-ascorbic acid treating sample is adopted, not only can the impact of interfering ions such as Cu, Fe, Ag, Bi and Se and the combination of the interfering ions be effectively screened, but also the impact of the lead base body on arsenic and antimony measure can be eliminated.

Description

technical field [0001] The invention relates to the field of analysis of trace elements in high-purity metals, in particular to a method for determining trace elements arsenic and antimony in industrial crude lead by means of atomic fluorescence spectroscopy. Background technique [0002] The distilled zinc with high lead and iron discharged from the lower extension of the lead tower enters the refining furnace for smelting to separate impurity elements such as lead, zinc and iron. Above 790°C, zinc and lead can dissolve each other in any proportion to form a homogeneous alloy. When the temperature is lower than 790℃, the liquid lead-zinc alloy is divided into two layers, the upper layer is zinc containing a small amount of lead, and the lower layer is lead containing a small amount of zinc, and as the temperature decreases, the zinc content of the upper layer is getting higher and higher. Zinc is continuously enriched in the upper layer; similarly, the lead content in the ...

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Application Information

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IPC IPC(8): G01N21/64
Inventor 马得莉王学虎王冬珍陈化玲吕彦玲陈瑾霞
Owner BAIYIN NONFERROUS GROUP
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