高等学校化学学报 ›› 1989, Vol. 10 ›› Issue (5): 537.

• 研究简报 • 上一篇    下一篇

用间接法测定硫化物的研究

张寒琦, 李淑娟, 张小希, 金钦汉   

  1. 吉林大学化学系
  • 收稿日期:1987-08-24 出版日期:1989-05-24 发布日期:1989-05-24
  • 通讯作者: 金钦汉

Study on the Determination of Sulfide by Indirect Method

Zhang Hanqi, Li Shujuan, Zhang Xiaoxi, Jin Qinhan(Q. Jin)   

  1. Department of Chemistry, Jilin University, Ghongchun
  • Received:1987-08-24 Online:1989-05-24 Published:1989-05-24

摘要: 前人已经报道用汞的冷原子吸收法测定硫化物[1],利用Hg2+和S2-形成很稳定的化合物,使汞的吸光度值降低,根据其降低的程度来测定硫化物的含量。这种方法简便、灵敏,但对加入的Hg2+量有较大的限制。S2O32-、CN-、I-等也有严重干扰,这些离子常与S2-共存于水样中,所以,实际测定时,常需分离这些离子。

关键词: 汞的冷原子吸收法, 硫化物, 硫化汞

Abstract: An indirect method for the determination of sulfide was developed. The method is based on the cold mercury vapor atomic absorption spectrometry (CMVAAS). Sulfide(S2-) was first transformed into mercury sulfide precipitation by reacting with mercury ion(Hg2+) in an aqueous solution and then was determined indirectly by measuring mercury content in the precipitate by CMVAAS. It was shown that the method is sensitive and quite specific. The method has been conveniently employed to determine sulfide in natural water.

Key words: Cold mercury vapor atomic absorption spectrometry, Sulfide, Mercury sulfide

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