硫脲络合火焰原子吸收光谱法同时测定银和铜

Simultaneous determination of silver and copper by flame atomic absorption spectrometry after thiourea complexing

本文通过对几种酸的试验研究，提出了在高氯酸介质中，硫脲络合，火焰原子吸收光谱法同时测定银和铜的新方法。本法适用于地质及选冶样品中银和铜的测定．方法的回收率银为９５．８％～１０３．２％，铜为９３．２％～１０８．６％，标准偏差银为６．７４％，铜为２．８２％。

Through testing of several acidic media, this paper proposes a new method for the simultaneous determination of silver and copper by flame atomic absorption spectrometry after thiourea complexing in the medium of perchloric acid. This method can be used to determine silver and copper in the same geoglogical sample or samples of mineral processing and smelting. The recovery rates of silver and copper are 95.8%￣103.2 % and 93.2 %￣108.6 % respectively and the standard deviations of silver and copper are 6.74% and 2.82% respectively.