摘要
在三苯磷－甲基异丁基酮萃取火焰原子吸收法测定化探样品的痕量银方法的基础上，用碘化钾代替三苯磷作为配合剂测定微量银，结果表明在１５％的盐酸介质中，碘化钾溶液作配合剂，用ＭＩＢＫ溶液萃取效果甚佳，而且克服了三苯磷的有毒、成本高、不易保存、需现用现配等缺点。本法的检出限为０．０１０×１０－６，最佳测定范围０．０１５×１０－６～５．０００×１０－６。
Based on the flame atomic absorption determination of trace silver of geochemical exploration sample by KI MIBK extraction, research shows that in 15% medium of hydrochloric acid, using KI solution instead of triphenylphosphine as complex agent and using MIBK solvent as extraction to determine silver, the effect is better. This method overcomes poison, high cost and difficult preservation of triphenylphosphine. The defination of this determination is 0 010×10 -6 and the best determined range is 0 015×10 -6 ～5 000×10 -6 .
出处
《黄金地质》
1999年第2期78-80,共3页
Gold Geology
