摘要
本法研究了金(Ⅲ)在1.2mol·L^(-1)硫酸中对铈(Ⅳ)-汞(Ⅰ)体系的催化作用。选择和确定了试剂最佳浓度、催化时间、加热温度,观察了共存离子等的影响。检出限为2.0gAu。金浓度在2.5—250ng/10ml范围内呈线性关系,适用于测定矿石中小于0.2g/t的金。
The gold catalyzed reaction of Ce(Ⅳ)-Hg(Ⅰ) sytem in 1. 2 mol. L^(-1)H_2SO_4 has been studied. The optimum reagent concentrations, catalytic time and heating temperature have been selected and determined. Effect of coexistent ions has been examined. The detection limit is 2. 0 ng Au and the calibration curve is linear in the range of 2. 5--250 ng Au/10 ml. The method is applicable to determine gold in ores less than 0. 2 g/t.
出处
《铀矿地质》
CSCD
北大核心
1990年第5期307-312,共6页
Uranium Geology
关键词
催化光度法
矿石
金
Trace gold, Catalytic spectrophotometry, Ore
