水相二聚衍生化顶空-GC/MS分析水中甲基汞  

Aqueous Dimerization Derivative Methyl Mercury in Water by Headspace-GC/MS

作　　者：马成[1] 黄野[1] 付毓[1] 

机构地区：[1]辽宁省环境监测实验中心,辽宁沈阳110031

出　　处：《中国环境监测》2011年第B10期1-3,共3页Environmental Monitoring in China

摘　　要：用巯基棉富集水样中甲基汞,盐酸溶液洗脱。在pH≈6条件下,甲基汞在四甲氧基硼酸钠产生的自由基作用下生成易挥发的(CH3Hg)2,用带碳捕集管的顶空浓缩,GC/MS分析。此反应为二级反应,甲基汞浓度与响应值的平方根成正比。检出限为8.5ng/L,加标回收率在61%～75%之间。Sulfhydryl cotton enrichment of methylmercury in water, hydrochloric acid elution. Under the pH ~ 6, methylmercury in sodium borate Tetramethoxy generate free radical generated volatile （ CH3Hg） 2, with the top tube with carbon capture air concentration, GC/Ms analysis. This reaction is second order reaction, methylmercury concentration is proportional to the square root of the response value. The detection limit was 8.5ng/L, the recoveries in the 61% - 75%.

关 键 词：水相 二聚 衍生化 甲基汞 气相色谱质谱 

分 类 号：X830.2[环境科学与工程—环境工程]