中华医学超声杂志

应用化学 ›› 1988, Vol. 0 ›› Issue (1): 27-31.

• 研究论文 • 上一篇    下一篇

伯胺N1923硝酸盐从硫代硫酸盐溶液中萃取银(Ⅰ)的机理

乐少明, 李德谦, 倪嘉缵   

  1. 中国科学院长春应用化学研究所
  • 收稿日期:1986-07-02 修回日期:1986-11-12 出版日期:1988-02-10 发布日期:1988-02-10

MECHANISM OF EXTRACTION OF SILVER (Ⅰ) FROM THIOSULPHATE SOLUTION BY PRIMARY AMINE NITRATE

Le Shaoming, Li Deqian, Ni Jiazuan   

  1. Changchun Institute of Applied Chemistry, Academia Sinica
  • Received:1986-07-02 Revised:1986-11-12 Published:1988-02-10 Online:1988-02-10

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摘要： 本文研究了伯胺N1923硝酸盐(RNH3NO3)从硫代硫酸盐溶液中对Ag(I)的萃取.结果表明,Ag(I)同时以AgS2O3-和Ag(S2O3)23-两种形式萃入有机相.

关键词: 萃取, 银, 伯胺N1923, 硫代硫酸盐, 机理

Abstract: The mechanism of extraction of silver(I) from thiosulphate solution by N1923 nitrate has been Studied. The effects of acidity, concentration of NO3- and S2O32- in aqueous phase on the diStribution ratio (D) of Ag(I) have been investigated. It is found that the D value decreases with increase of concentration of NO3- and S2O32-, and pH value as well. The results show that the extraction process is an anion exchange and the extracted species are a mixture of AgS2O3- and Ag(S2O3)23-. The IR spectra of the extracted complexes were measured, which support the mechanism proposed.

Key words: Extraction, Silver ion, Primary amine N1923, Thiosulphate, Mechanism

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