海水中甲基、丁基锡的形态分析  

Speciation of methyl-and butyltin in seawater

作　　者：李静 祝惠英 陆贤昆 

机构地区：[1]青岛海洋大学海洋化学系

出　　处：《分析科学学报》1994年第2期31-35,共5页Journal of Analytical Science

摘　　要：对海水中甲基、丁基锡的氢化反应与捕集、色谱分离及其原子化等进行了条件实验和最佳化。采用１５ｃｍＣｈｒｏｍｏｓｏｒｂＧＡＷ—ＤＭＣＳ载体和ＯＶ—３固定液，色谱分离锡的无机、一甲、二甲、三甲、一丁、二丁、三丁基化合物的保留时间分别为４０、１００、１２５、１３９、１６０、１９１、２２８ｓ；在０．２００ｄｍ３水样中直接测定海水中各形态锡的检出限分别为１．９、１．６、１．８、３．０、１．３、１．４、２２．４、ｎｇＳｎ·ｄｍ－３；其相应的测量精密度在１０％左右。The conditions of hydride generation,cold trapping,chromatographic separation, and atomization for the speciation of methyl-and butyltin in seawater were investigated and optimized. By using carrier of Chromosorb GAW-DMCS and OV-3 stationary phase the inorganic,mono-,di-,and trimethyltin and mono-,di-and tributyltin Can be separated with the retention time of 40,100,125,139,16.0 191,and 228 s respectively.The detection limit of them for measuring 0.200 dins seawater are 1.9,1.6,1.8,3.0, 1.3,1.4,and 22.4 ng Sn/dm3 respectively.A precision around 10% was obtained at low levels of the organic tins..

关 键 词：海水 甲基锡 丁基锡 形态分析 

分 类 号：P734.43[天文地球—海洋化学]