萃取色层分离—原子吸收分光光度法测定岩石中痕量银

AAS Determination of Trace Silver in Ores by Extraction Chromatography

原子吸收分光光度法测定银是一个较简便、快速的方法。但由于灵敏度的限制,不得不采取一些有效措施如分离富集等手段来满足生产上的要求。本文探讨了N_(26)国产季胺型液体交换树脂萃取色层分离、富集银的行为。经实践证明,在有一定量氯离子存在下,N_(263)能定量吸附银,1:1盐酸淋洗后即可进行原子吸收测定。

The behaviour of enriching silver by extraction chromatography with N263 liquid resin was studied.The optimum conditions of the adsorption and elu-tion of silver were examined.The elimination and interference of foreign ions were tested.This method could detect more than 0.0x ppm of silver in ores(sample taken:5g).