Method for measuring trace elements such as arsenic and selenium in industrial electro-deposit copper 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 atomic fluorescence spectroscopy has not been reported, achieve good economic benefits and industrial application value, high precision, automatic high degree of effect

Inactive Publication Date: 2014-10-01
BAIYIN NONFERROUS GROUP
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Problems solved by technology

[0003] At present, in the detection of trace elements, atomic fluorescence spectroscopy is widely used, and a large number of researchers at home and abroad have made in-d...

Method used

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  • Method for measuring trace elements such as arsenic and selenium in industrial electro-deposit copper according to atomic fluorescence spectrometry
  • Method for measuring trace elements such as arsenic and selenium in industrial electro-deposit copper according to atomic fluorescence spectrometry
  • Method for measuring trace elements such as arsenic and selenium in industrial electro-deposit copper according to atomic fluorescence spectrometry

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Embodiment Construction

[0029] The implementation process of the present invention is illustrated below with a specific test process.

[0030] 1. Drug preparation:

[0031] 1.1. Hydrochloric acid: ρ1.19g / mL, superior grade.

[0032] 1.2. Nitric acid: ρ1.42g / mL, superior grade.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 1.6. Potassium borohydride solutio...

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Abstract

The invention discloses a method for measuring trace elements such as arsenic and selenium in industrial electro-deposit copper according to the atomic fluorescence spectrometry. The method comprises the following steps: A, preparing a solution of an industrial electro-deposit copper fine sample; B, preparing a standard arsenic solution and a standard selenium solution; C, preparing a working curve solution with the standard arsenic solution and the standard selenium solution; D, measuring the atomic fluorescence strengths of arsenic and selenium in the working curve solution with an atomic fluorescence photometer, and drawing working curves by taking the mass concentrations of arsenic and selenium as X axes, and taking the fluorescence strengths of arsenic and selenium are Y axes; E, measuring the atomic fluorescence strengths of arsenic and selenium in the sample solution with the atomic fluorescence photometer, and finding out corresponding mass concentrations of arsenic and selenium on corresponding working curves with the atomic fluorescence strengths. As a nitric acid, hydrochloric acid, potassium iodide 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 copper base body on arsenic and selenium 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 measuring trace elements arsenic and selenium in industrial electrodeposited copper by atomic fluorescence spectroscopy. Background technique [0002] In recent years, the sales volume of our company's electrolytic copper has grown rapidly, but most of the electrolytic copper sold are low-end products. In order to promote the development of electrolytic copper sales to high-end products and enhance the competitiveness of electrolytic copper products in the domestic and international markets, The quality of electrodeposited copper must be strictly controlled. The composition of electrodeposited copper is relatively complex, and the presence of some coexisting elements such as antimony, tellurium, arsenic, selenium, bismuth, lead, zinc, phosphorus, manganese, iron, etc. has a great impact on the performance of electrodeposited copper, so...

Claims

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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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