封闭溶样活性炭吸附原子吸收法测定矿石中的金  

Determination of Au in ore samples by flame atomic absorption spectrometry of sealed dissolution after enrichment with activated carbon

作　　者：张宁[1] 郭秀平[1] 李星[1] 姜云军[1] 申玉民[1] 安彩秀[1] 

机构地区：[1]河北省地矿中心实验室

出　　处：《黄金》2014年第5期81-82,共2页Gold

摘　　要：采用盐酸-硝酸-氯化钠-氟化氢铵-高锰酸钾溶样体系，于沸水浴中封闭溶解矿样，经活性炭吸附柱动态吸附金，采用火焰原子吸收光谱法测定。对国家标准物质进行分析，其测定结果与标准值一致，方法检出限为0．02μg／mL，精密度RSD为0．90％～4．18％。该方法简便、快速，节约了成本，减少了环境污染。Sealed dissolution is conducted In boiling water bath environment by the dissolution system of hydro -chloric acid-nitric acid-sodium chloride-ammonium bifluoride-potassium permanganate , gold is dynamically adsorbed via activated carbon adsorption column and then flame atomic absorption spectrometry is used for determination .The results were in agreement with the value of the certified reference materials and the RSD was in the range of 0.90 %-4.18 %,the determination limit of gold was 0.02μg/mL.The method is simple,fast and cost effective ,re-ducing environment pollution .

关 键 词：金 封闭溶样 活性炭 火焰原子吸收光谱法 

分 类 号：TD926.3[矿业工程—选矿]