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  • CN 62-1112/TF 
  • ISSN 1005-2518 
  • Founded in 1988
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Initial Study on Expanding Determine Range of Trace Gold by Catalytic Colorimetric Method

  • WANG Fengxun
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  • Testing Center of No.2 Geological Brigade,Hebei Bureau of Geology and Mineral Resources,Tangshan   063000, Hebei,China

Received date: 2014-07-06

  Revised date: 2014-08-28

  Online published: 2015-01-14

Abstract

Ammonium ceric sulfate-mercurous nitrate system catalysis colorimetric method for determination of trace gold was restudied by fixed time and absorption spectrophotometry,and under the experimental conditions the catalytic reaction constant K value was determined.Meanwhile,we also tried without color again using the K value,which was calculated under the condition of the amount of gold that was four times of the original method,indicating effectively expands the range of measurement of gold.The method was employed to determine the national level standard material of gold,and the result was in accordance well with the recommended value.Additionally,using plasma mass spectrometry and the provisions as control sample analysis,the determination results conformed to the requirements of the industry standard.

Cite this article

WANG Fengxun . Initial Study on Expanding Determine Range of Trace Gold by Catalytic Colorimetric Method[J]. Gold Science and Technology, 2014 , 22(6) : 65 -68 . DOI: 10.11872/j.issn.1005-2518.2014.06.065

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