【摘要】 本文报告一个痕量金的诱导光度测定新体系:在HCl-HNO₃介质中有尿素存在时,痕量金诱导H₂PO₂^--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。更多还原

【Abstract】 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 H2PO₂^--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.更多还原