影像科学与光化学 ›› 1991, Vol. 9 ›› Issue (1): 71-75.DOI: 10.7517/j.issn.1674-0475.1991.01.71

• 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杂质铅和铋

吴学汉, 彭云, 崔光晨, 朱紫瑜   

  1. 中国科学院感光化学研究所, 100101
  • 收稿日期:1989-05-19 修回日期:1990-09-04 出版日期:1991-02-20 发布日期:1991-02-20
  • 通讯作者: 吴学汉

DETERMINATION OF LEAD AND BISMUTH IN SILVER NITRATE BY GRAPHITE FURNACE ATOMIC ABSORPTION SPECTROMETRY

Wu XUE-HAN, PENG YUN, CUI GUANG-CHEN, ZHU ZI-YU   

  1. Institute of Photographic Chemistry, Academia Sinica, Beijing, 100101, P.R. China
  • Received:1989-05-19 Revised:1990-09-04 Online:1991-02-20 Published:1991-02-20

摘要: 硝酸银是感光材料工业的基本原材料之一,其纯度对感光材料的质量有不容忽视的影响。铅和铋是公认的减感元素,弄清它们在硝酸银中的含量,并设法在生产过程中将它们控制在一定的范围以内,对感光工业是极为重要的。国外各大感光胶片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。

关键词: 痕量分析, 感光材料, 硝酸银, 铅,

Abstract: A method for determination of trace quantities of lead and bismuth in silver nitrate was described. Lead and bismuth were separated from precipitated AgCl with NH4Cl as a precipitant and EDTA as a complexing agent. The method is simple and convenient. The recoveries are up to more than 90%.

Key words: trace analysis, photographic materials, silver nitrate, lead, bismuth