高等学校化学学报 ›› 1981, Vol. 2 ›› Issue (1): 43.

• 论文 • 上一篇    下一篇

甲基百里香酚蓝三元络合物光度法测定空气中的微量镉

王怀公   

  1. 兰州大学化学系
  • 收稿日期:1980-01-11 出版日期:1981-01-24 发布日期:1981-01-24

METHYL THYMOL BLUE TERNARY COMPLEX SPECTROPHOTOMETRIC DETERMINATION OF MICROAMOUNT CADMIUM IN AIR

Wang Huaigong   

  1. Department of Chemistry, Lanzhou University, Lanzhou
  • Received:1980-01-11 Online:1981-01-24 Published:1981-01-24

摘要: 本文研究了用镉-甲基百里香酚蓝-溴化十六烷基三甲基铵三元络合物光度测定镉的反应条件和络合物组成。本法具有灵敏度高,选择性好等优点。其最大特点是显色较迅速,颜色稳定。在文中还提出了用氟化铵,邻菲啰啉作为镍、钴、镁等离子的掩蔽剂,制定了不经分离快速测定空气中微量镉的新方法。

Abstract: In this paper the condition and composition of the ternary complex for determination of cadmium with Cd-methyl thymol blue-cetyl trimethyl ammonium bromide have been put forward.This method is characterized by high sensibility and good sebectivity, and especially by stable colour with rapid reaction.We have, moreover, proposed a new method tb determine cadmium in air, without separating Cd from its accompanying elements, with ammonium fluoride and phenanthroline as masking reagents of Ni, Co, Mg cations.

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