二苯硫脲泡塑富集测定钨矿中的金  

Determination of Gold in Tungsten Ore with Diphenylthiourea-Loaded Polyurethane Foam Enrichment

作　　者：马怡飞 汪广恒[2] 柯艳 高文旭 王恒 MA Yifei;WANG Guangheng;KE Yan;GAO Wenxu;WANG Heng(Xi’an Northwest Geological Institute for Nonferrous Metals Co.,Ltd.,Xi'an 710054,Shaanxi,China;College of Chemistry and Chemical Engineering,Xi'an University of Science and Technology,Xi'an 710054,Shaanxi,China)

机构地区：[1]西安西北有色地质研究院有限公司,陕西西安710054 [2]西安科技大学化学与化工学院,陕西西安710054

出　　处：《中国钨业》2019年第4期66-69,74,共5页China Tungsten Industry

摘　　要：系统地分析了使用泡塑富集钨矿中的金时结果严重偏低的原因,并在此基础上建立了分取上清液使用二苯硫脲泡塑分离富集金,无臭灰化,王水提取,电感耦合等离子体发射光谱(ICP-OES)测定钨矿石中金含量的方法。该方法可以针对各种含量的钨矿石,方法检出限为0.018μg/g,相对标准偏差(RSD)为1.82%~2.92%(n=11),此方法的准确度与精密度能够满足钨矿样品中金的测定要求。The factors of significantly lower result of the gold in the enrichment of tungsten ore by polyurethane foam were systematically analyzed.On the basis of this,a method by ICP-OES after diphenylthiourea-loaded polyurethane foam separation and enrichment gold in divide supernatant,smell-less ashing and aqua regia extraction were proposed.The method is aimed at all kinds of tungsten ores,the detection limit was 0.018μg/g,the relative standard deviation(RSD)was 1.82%~2.92%(n=11),the accuracy and precisions of this method could meet the requirements of tungsten ore analysis.

关 键 词：钨矿石 金 二苯硫脲泡塑 电感耦合等离子体发射光谱法 

分 类 号：O657.31[理学—分析化学]