原子吸收光谱法测定地质样品中的金  

Determination of gold in geological sample by AAS

作　　者：苏开灿 

机构地区：[1]芒市海华开发有限公司

出　　处：《黄金》2014年第11期85-87,共3页Gold

摘　　要：样品经高温焙烧，用50％王水分解，在5％～30％的王水介质中以聚氨酯泡沫塑料动态吸附金后，用1％的硫脲酸性溶液水浴加热解吸，解吸液直接进行测定；样品中大量其他共存元素均无干扰，测定范围为0．01～20g／t。该方法分析步骤简单快速，成本低，测定结果准确可靠，重现性高，适合地质样品的批量分析。The process is like this：the samples are roasted in high temperature, dissolved in 50 % aqua regia, gold is dynamically adsorbed by polyurethane foam plastics in media of 5 % -30 % aqua regia, then is desorbed with 1% acidic thiourea solution and heat before direct determination in desorption solution. The large amount of associated minerals cause no interference and the detection limit is 0.01 -20 g/t. The method is simple ,fast,cost effective while the results are reliable, practical and suitable for batch analysis of geological samples.

关 键 词：金的测定 样品代表性 泡沫塑料 硫脲 

分 类 号：TD15[矿业工程—矿山地质测量] O655[理学—分析化学]