摘要
本文报告一个痕量金的诱导光度测定新体系:在HCl-HNO_3介质中有尿素存在时,痕量金诱导H_2PO_2^--Te(Ⅳ)的氧化还原反应;利用乳化剂OP提高反应的灵敏度和泡沫塑料吸附金以分离除去伴生元素,测定地质样品中>0.2ppb Au。
This paper reports a new system of inductive photometric method for the determination of trace gold. In a medium of HC1-HNO3, gold induces the redox system H2PO_2^--Te(Ⅳ) in the presence of urea. Using emulsifier OP to increase the sensitivity of the reaction, we can determine Au of above 0.2ppb in geochemical samples. Interferences from associated elements can be removed by adsorbing the gold on a plastic foam.
出处
《岩矿测试》
CAS
CSCD
北大核心
1990年第1期29-33,共5页
Rock and Mineral Analysis
