摘要
本文研究了一种高灵敏度高选择性连续测定ppb级Au、Ag、Cu、Fe、Bi的新分析方法,在pH0.5—1.5范围内金属离子与KSCN及RB形成三元离子缔合物,用甲苯进行萃取浮选,用DMF溶解并用火焰原子吸收法测定.本文详细研究了其浮选条件、浮选行为及分析特性.富集倍数高达200倍.已用于环境监测和化探样品的测定.
For sequentially determining Au, Ag, Cu, Fe, and Bi in ppb order, a highly sensitive and selective analytical method is developed. The method is based on the formation of ternary ionic associate by reacting metallic ion with potassium thiocyanate (KSCN).and rhodamine (?) (RB) at pH 0. 1-1. 5. The ternary ionic associate is subjected to extractive flpattation with toluene as floatation agent. It is then dissolved and determined by flame atomic absorption spectrophotometry (FAAS). The conditions and behaviour of floatation as well as the characteristics of analysis are studied in detail. It shows an enrichment up to 200 times. The method has been applied to environment monitoring and mineral sample determination.
出处
《华侨大学学报（自然科学版）》
CAS
1992年第4期481-487,共7页
Journal of Huaqiao University(Natural Science)
关键词
萃取浮选
火焰原子吸收
硫氰化钾
ternary ionic association
extractive floatation
flame atomic absorption
spectrophotometry
metallic ion
potassium thiocyanate
rhodamine B
