摘要
本文应用火焰原子吸收光谱法对电解铜中微量金进行了测定。以王水溶解样品,在盐酸和硝酸介质中用活性炭——纸浆在动态情况下吸附微量金并与铜和其它元素分离,然后被吸附的金用草酸还原为单体金。过滤后的渣子灼烧除炭,后用王水溶解残渣。用配有AA—85型微机系统的火焰原子吸收光谱测定。由于实行专用微机系统的扩展功能,获得了满意结果。方法测定下限0.1ppm,相对标准偏差11.5％。
A description is presented of the determination of paucity gold in electrolytic copper with flame atomic absorption spectrometry, in which the sample is dissolved in aqua regia.In a medium of HC1 and HNO8,paucity gold is separated from copper and other elements with activated carbon-paper pulp adsorption under dynamic condition.Then the adsorbed gold is reduced to Au by oxalic acid.After filtration the remainder is roasted to remove carbon and dissolved in aqua regia again.A flame atomic absorption spectrometer coupled with AA-85 microcomputer system is used for determination. As the multiplied function of the specific microcomputer system is put into effect,a satisfactory result can be obtained.The limit of the determination is 0.1 ppm,and RSD 11.5%.The method is simple and the result is accurate.
出处
《黄金》
CAS
北大核心
1989年第7期37-39,共3页
Gold
