应用化学 ›› 1989, Vol. 0 ›› Issue (4): 84-86.

• 研究简报 • 上一篇    下一篇

分光光度法同时测定砷和锑

邱孙青, 汪炳武   

  1. 中国科学院长春应用化学研究所
  • 收稿日期:1988-06-29 修回日期:1989-01-27 出版日期:1989-08-10 发布日期:1989-08-10
  • 基金资助:
    国家自然科学基金

SIMULTANEOUS SPECTROPHOTOMETRIC DETERMINATION OF ARSENIC AND ANTIMONY

Qiu Sunqing, Wang Bingwu   

  1. Changchun Institute of Applied Chemistry, Academia Sinica
  • Received:1988-06-29 Revised:1989-01-27 Published:1989-08-10 Online:1989-08-10

摘要: 近年来,人们在微量砷和锑的光度分析中做了大量工作[1-5],但用分光光度法同时测定这两种元素的文献则少见。本文用新银盐法[6]测定砷,同时参照Kellen等提出的在催化剂存在下,使胂(AsH3)与Fe(Ⅲ)作用生成Fe(Ⅱ)的测定砷的方法,观察到在乙醇介质中,(月弟)(SbH3)也能与Fe(Ⅲ)发生氧化还原反应。由于胂在(月弟)吸收液中不被吸收,因此,将两种吸收液串连后,即可同时测定砷和锑。

关键词: 砷, 锑, 微量分析, 分光光度法

Abstract: A simnltaneous spectrophoto metric method for Sb and As determination has been.established. SbH3 and AsH3, produced by addition of a KBH4 tablet to Sb3+ and As3+in tartaric solution,were absorbed by a 95% alcohol solution of Fe3+-1,10 phenathrolineand a mixed solution of AgNO3, PVA and alcohol. The absorbances were measured at 400nm for As and 510nm for Sb. Tolerance levels of various ions were given. The detection limitswere 0.09ppm (3 s) for Sb and 0.05ppm (3 s) for As. The method is simple, rapid, and sensitive.

Key words: Arsenic, Antimony, Microanalysis, Spectrophotometry