摘要
本文研究了聚酰胺树脂的吸附性能，发现Ａｕ和Ａｇ易形成稳定的硫氰酸络阴离子，在稀硝酸介质中吸附于聚酰胺树脂进行富集并与大部分贱金属元素分离。采用Ｎａ２ＳＯ３作为解脱剂，可以定量解脱树脂上的Ａｕ和Ａｇ，而树脂不被破坏可以反复使用。采用双波长光度法进行Ａｕ和Ａｇ测定，并实际用于Ａｕ和Ａｇ标样的测定，结果令人满意，相对标准偏差小于５．１％。
The absorbent performance of polyamide resin has been studied.Au(Ⅲ) and Ag(Ⅰ) easily react with - to form complex anions in dilute nitric acid medium,and be adsorbed on the polyamide resin to enrich,and be separated from many other base metals.When Na 2SO 3 and NH 3·H 2O is used as eluating agent,Au and Ag can be recovered quantitatively.Therein can be retreated and reused easily.In addition,we established a dual wavelength spectrophotometric method which has been applied to the determination of Au(Ⅲ) and Ag(Ⅰ) in standard samples with relative standard deviation of less than 5 1%.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
1998年第2期244-246,共3页
Spectroscopy and Spectral Analysis
关键词
金
银
聚酰胺
双波长光度法
富集
测定
Gold, Silver, Polyamide, Dual Wavelength spectrophotometry
