Chem. J. Chinese Universities ›› 1991, Vol. 12 ›› Issue (4): 462.

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Catalytic Spectrometric Determination of Trace Silver Via Using Oxidation of Azophloxine with Potassium Persulfate

Zheng Zhao-sheng, Ling Lin   

  1. Department of Chemistry, Fuzhou University, Fuzhou, 350002
  • Received:1989-09-16 Online:1991-04-24 Published:1991-04-24

Abstract: Based on the catalytic effect of Ag(Ⅰ) on the oxidation of azophloxine with potassium per-sulfate in the presence of α,α' -bipyridyl as an activator, a new catalytic spectrophotometric method for determining trace amounts of Ag(Ⅰ) is studied. The limit of detection for Ag is 1. 0×10-4μg/ mL. The linear range of determination of silver is 2. 0×10-4-4. 0×102μg/mL. The method has been used to determine trace Ag in ores with satisfactory results.

Key words: Catalysis, Spectrophotometry, Silver

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