泡沫塑料富集原子吸收法测定矿石中的金

Determination of gold in ore by polyurethane foam pre-concentration and atomic absorption spectrometry

采用火焰原子吸收光谱法测定地质样品中常量金,对泡沫塑料的预处理、吸附时间、解脱温度、解脱时间及硫脲质量分数等因素进行了实验,获得了最佳实验条件。对不同国家标准物质进行测定,其相对标准偏差均小于5%。

In this paper, the determination of gold in geological samples by flame atomic absorption spectrometry was used. Pretreatment of the foam, adsorption time, desorbent temperature and time, and concentration of thiourea were tested, and the optimal experimental conditions were obtained. Different national standard substances were determined by the spectrometry, and the relative standard deviations were less than 5 %.