【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。更多还原

【Abstract】 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 0.018 μg/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.更多还原