高等学校化学学报

高等学校化学学报 ›› 1991, Vol. 12 ›› Issue (4): 462.

• 论文 • 上一篇    下一篇

过硫酸钾氧化偶氮荧光桃红催化光度法测定痕量银

郑肇生, 凌琳   

  1. 福州大学化学系, 350002
  • 收稿日期:1989-09-16 出版日期:1991-04-24 发布日期:1991-04-24
  • 通讯作者: 郑肇生

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

PDF (PC)

被引次数

17

摘要： 以过硫酸盐氧化偶氮类试剂催化动力学法测定银,多数线性范围较窄、选择性欠佳。本文建立了以偶氮荧光桃红作指示物质、α,α′-联吡啶作活化剂的催化光度法,测定痕量银检出限为1.0×10-4μg/mL,线性范围2.0×10-4～4.0×10-2μg/mL,灵敏度高,选择性好。用于测定鄂铜矿中银,结果满意。采用自装的微机动力学数据处理系统,测试简便、准确。

关键词: 催化, 分光光度法, 银

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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