载金炭中金的分析方法研究

Study on the analysis of gold in gold-carrying carbon

采用高温灰化、酸溶分解、火焰原子吸收法对载金炭中金的分析方法进行了实验研究,提出了用不定量称样、高温灰化、盐酸和过氧化氢分解、火焰原子吸收浓度直读、加权平均法来消除分析测试中活性炭吸附金的不均匀性所引起的偏差.实验结果表明:该方法不仅消除了分析中活性炭吸附金的不均匀性所引起的偏差,且操作简便、准确可靠,其测定下限为0.5μg/g.

A method of analysis about gold in gold-carrying carbon is test ed by heating ash and Acid decomposition and flame atom absorption. The paper puts forward how to eliminate the warp of dissymmetrical on activated carbon absorbi ng gold in analysis with weighing sample of no quantity and adding the weight av erage. The result of test expresses that this method is not only easier to work but also accurate and dependable. Determination limit of minimum is 0.5 ì g/g.