冷原子吸收法测定重晶石中汞

摘要

A method for the determination of mercury in barite by cold vapour atomic absorption spectrometry is reported in this paper. The sample is dissolved by HNO3-HClO4 and the content of mercury is determined by atomic absorption spectrometry. The RSD is less than 5%, and the recovery is within 92%-107%. The method is proved to be precise and convenient.%以冷原子吸收法测定重晶石中汞。试样用硝酸-高氯酸溶解，选择二氯化锡还原化合汞为原子汞进行测定，方法的相对标准偏差＜5％，加标回收率在92％～107％之间。