微波封闭溶样原子吸收法快速测定金精矿中的铅

Fast measurement of Pb in gold concentrate samples with AAS method and microwave sealed dissolution process

实验确定了原子吸收快速测定金精矿中铅的方法。实验表明，称取矿样0．2g于聚丙烯溶样瓶中，经硝酸除硫后，采用HN03-H2O2-NH4HF2溶剂，在微波场内照射2～3min，即可将矿样分解完全；在硝酸介质中，以原子吸收法测定铅，方法的RSD为2．3％。

With a series of experiments, Pb in gold concentrate samples can be fast measured with AAS method. In the experiments, 0.2g ore sample was put into polypropylene dissolution bottle and sulfur was eliminated by nitric acid. With HNO3 -HE02 -NH4HF2 as solvent, the sample could decompose completely after 2 -3min＇s radiation in microwave field. In nitric acid medium, Pb could be measured with AAS method and the RSD is 2.3%.