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HNO_3─KI─MIBK萃取/原子吸收光谱法测定固体废物浸提液中的微量银
引用本文:齐斐,李春兰,李国钢,齐文启. HNO_3─KI─MIBK萃取/原子吸收光谱法测定固体废物浸提液中的微量银[J]. 干旱环境监测, 1995, 0(2)
作者姓名:齐斐  李春兰  李国钢  齐文启
作者单位:北京市环境保护监测中心,中国环境监测总站
摘    要:采用选择性较好的HNO3—KI—MIBK萃取体系对铋渣和尾矿渣浸出液中的痕量银进行预分离富集后,用火焰原子吸收法(AAS)进行测定。此法不仅变异系数小(约为3.1%),而且检出限比直接火焰AAS法降低两个数量级,达0.5ng/ml.另外,还就作品细度对银测定结果的影响原因做了初步探讨。

关 键 词:萃取富集,固体废物,浸出液,银,火焰原子吸收法

DETERMINATION OF TRACE SIL VER IN LEACH LIQUORS OF SOLID WASTE BY HNO3-KI-MIBK EXTRACTION AND ATOMIC ABSORPTION SPETROMETRY
Qi Fei and Li Chunlan. DETERMINATION OF TRACE SIL VER IN LEACH LIQUORS OF SOLID WASTE BY HNO3-KI-MIBK EXTRACTION AND ATOMIC ABSORPTION SPETROMETRY[J]. Arid Environmental Monitoring, 1995, 0(2)
Authors:Qi Fei and Li Chunlan
Abstract:Trace amounts of silver in leached liquors of bismuth ore slag and talings samples was preconcentrated by selective extraction system of HNO3- KI- MIBK and then determined by FAAS method. The relative standard deviation and detaction limit were 3.1% and 0. 5 ng/ml, resistively. The effect of Sample mesas on the analytical results of silver was also briefly brifly discussed.
Keywords:Silver  Extraction/FAAS  Solid wastes  Leached liquors.
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