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用与硒、碲共沉淀的方法富集金,由于富集完全,夹带杂质少等优点,曾较多地应用于矿石中金的测定,并与萃取原子吸收相结合测定各种物料中PPm到PPb级的金。对金的几种共沉淀富集法(Se、Te、As、S共沉淀法)以及活性炭吸附法进行比较研究后,认为硒共沉淀法最好,其优点是结果重现性好,允许的酸度宽,少量的硝酸不干扰等。但是,由于在解脱载体时,产生有毒的气体而使应用受到限制。同时
With the method of selenium and tellurium coprecipitation enrichment gold, due to the advantages of complete enrichment, less entrained impurities, has been more used in the determination of gold in ores, and combined with the extraction of atomic absorption Determination of various materials PPm to PPb level of gold. Several coprecipitation enrichment methods of gold (Se, Te, As, S coprecipitation method) and activated carbon adsorption method were compared, the selenium coprecipitation method that the best, the advantage of good reproducibility of the results, allowing Acidity is wide, a small amount of nitric acid does not interfere. However, applications are limited due to toxic gases generated upon release of the carrier. Simultaneously