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。
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.
出处
《干旱环境监测》
1995年第2期65-68,共4页
Arid Environmental Monitoring
基金
国家八.五攻关课题
