影像科学与光化学 ›› 1991, Vol. 9 ›› Issue (3): 232-236.DOI: 10.7517/j.issn.1674-0475.1991.03.232

• 研究简报 • 上一篇    下一篇

石墨炉原子吸收法测定硝酸银中的痕量金

吴学汉, 陆思华, 彭云, 崔光晨   

  1. 中国科学院感光化学研究所, 北京 100101
  • 收稿日期:1989-10-05 修回日期:1990-09-17 出版日期:1991-08-20 发布日期:1991-08-20
  • 通讯作者: 陆思华

DETERMINATION OF TRACE GOLD IN SILVER NITRATE BY GRAPHITE FURNACE ATOMIC ABSORPTION SPECTROMETRY

WU XUE-HAN, LU SI-HUA, PENG YUN, GUI GUANG-CHEN   

  1. Institute of Photographic Chemistry, Academic Sinica, Beijing 100101, P. R. China
  • Received:1989-10-05 Revised:1990-09-17 Online:1991-08-20 Published:1991-08-20

摘要: 卤化银感光材料面世已有一百余年的历史,其基本原材料之一的硝酸银的纯度,对感光材料的感光特性有着不容忽视的影响。国外各著名感光材料厂家对硝酸银中杂质的含量,都有严格的内控标准。但分析方法一般不公开发表。文献上偶见到少量工作[1-3],一般也非感光材料厂家的实用技术。

关键词: 痕量分析, 感光材料, 金, 硝酸银

Abstract: Trace gold in AgNO3 was separated from main element Ag with 2 mol/L HC1 as a precipitant.After filtering, Au3+ in the solution was extracted with 6ml 55% TBP-CHCl3 and was determined by graphite furnace atomic absorption spectrometry.The method is convenient and sensitive.The recovery and relative standard deviation are 95-105% and < 15%, respectively.

Key words: trace analysis, photographic materials, gold, silver nitrate