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锑矿石中金的原子吸收测定,一般含锑量在20％以下,以往曾采用使锑水解,或加柠檬酸掩蔽以消除干扰。但锑精矿中锑含量高达60％左右,样品灼烧时易于结块,难于分解。本法根据兄弟单位采用的氯化铵与样品混匀灼烧,大量锑几乎全部除去,然后用王水溶解,以巯基棉吸附富集,原子吸收法测定,得到了满意结果,回收率98～102％。
Antimony ores in the determination of gold atomic absorption, the general content of less than 20% of the antimony, antimony has been used in the past to hydrolysis, or add citric acid masking to eliminate interference. However, antimony concentrate antimony content as high as 60%, the sample is easy to agglomerate when burning, it is difficult to decompose. This method according to the fraternal unit of ammonium chloride and the sample mix and burn, a lot of antimony is almost completely removed, and then dissolved with aqua regia, mercapto cotton adsorption enrichment, atomic absorption spectrometry, and obtained satisfactory results, the recovery rate of 98 ~ 102%.