气相色谱－卧管式微火焰原子吸收法测定环境样品中的二乙基汞

摘要

介绍了一种以正己烷萃取，用气相色谱－卧管式微火焰原子吸收法测定环境样品中二乙基汞的方法。该法简单快速，灵敏度高。二乙基汞的检出限为1.9×10-11g/s；r＝0.9996；RSD＝2.3%。回收率：底泥93.7～100.7%；土样92.8～102.6%；水样83.6～91.5%。%A method is proposed for the determination of diethylmercury in environmental samples by GC－AAS with horizontal pipe mini-flame atomizer. The samples were extracted by n-haxane. The method is simple, sensitive and rapid. The detection limit for diethylmercury is 1.9×10-11g/s, r＝0.9996, RSD＝2.3%. The recoveries are 93.7%～100.7% for sediment, 92.8%～102.6% for earth samples and 83.6%～91.5% for water samples.