巯基棉富集—大口径毛细管气相色谱法测定水样中痕量烷基汞

Determination of Methylmercury and Ethylmercury in Environmental Water by Megabore Capillary Gas Chromatography after Preconcentration

摘要: 介绍了巯基棉富集-大口径毛细管柱气相色谱法测定环境水中痕量烷基汞的分析方法,并与玻璃填充柱色谱分离烷基汞进行了对比。取1000ml环境水样时,本法的检出限为:甲基汞(MMC)0.5pg;乙基汞(EMC)0.7pg。

Abstract: Methylmercury and ethylmercury at 0. x pg levels were preconcentrated into a sulphydryl cotton fiber adsorbent and elutes with a mixture of Imol/L hydrochloric acid and 2mol/L sodium chloride. The elute.was extracted with benzene. Analysis was performed b