野外快速测定矿石中银的方法  

Quick determination of Silver from ore in field

作　　者：薛光[1] 姚万林[1] 刘永生[1] 

机构地区：[1]武警黄金第十支队,山东烟台264001

出　　处：《黄金地质》2001年第2期67-69,共3页Gold Geology

摘　　要：采用HNO3+NH4 HF2 混合溶剂进行封闭溶样 ,在 10 %HNO3介质中 ,以CCX富集分离Ag ,吸附在CCX的Ag经浓HNO3解脱后 ,在 5%HNO3中 ,采用SCN- 滴定法进行测定。经矿样验证 ,该方法适用于矿石。By enclosed dissolution in HNO 3+NH 4HF 2 mixed solvent, Ag is enriched and separated by CCX in 10% NH 3 , and after dismembering by dense HNO 3, Ag absorbed by CCX is determined by the SCN - titrimetry in 5% HNO 3. Proved by the ore samples, the method is applicable for field quick determination of Ag from ore and gold concentrates.

关 键 词：银 滴定法 矿石 CCX 黄原脂棉 SCN^- 金精矿 

分 类 号：P575[天文地球—矿物学]