泡沫塑料富集原子吸收法测定矿石中金及影响因素的探讨

Determination of gold in ores by atomic absorption spectrometry after enrichment with foam plastics and discussion on the influencing factors

矿石样品通过高温烧制,王水分解,选用高密度聚氨酯泡沫塑料富集金元素,用硫脲加热解脱,采用空气-乙炔火焰原子吸收分光光度计来测定矿石中金的含量。本文通过大量实验,探讨了样品焙烧、溶解、吸附震荡、解脱、上机测试五个环节对实验结果的影响。

The ore samples are fired by high temperature and decomposed by aqua regia.High density polyurethane foam is used to enrich the gold elements,and is decompressed by thiourea.The content of gold in ores is determined by air acetylene flame atomic absorption spectrophotometer.In this paper,through a large number of experiments,the influence of sample roasting,dissolution,adsorption vibration,desorption and on-line test on the experimental results is discussed.