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0．01～20 g／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.
参考文献
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| [2] | 《岩石矿物分析》编写组.岩石矿物分析:第一分册[M].北京:地质出版社,1991:837-844. |
| [3] | 罗学辉,张勇,陈占生,李玄辉,陈雪.金矿石加工及测试质量过程控制[J].黄金,2012(03):61-64. |
| [4] | 刘万益 .含钨锑多金属矿中泡沫塑料法测定金---泡塑法分离富集金的选择性及重现性[J].黄金,1992,23(12):46-49. |
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