湖泊沉积物中邻苯二甲酸酯类的GC／MS分析

Analysis of Phthalic Esters in Lake Sediments by GC/MS

东湖沉积物阴干后用二氯甲烷溶剂萃取，用ＤＢ－５弹性石英毛细管柱ＧＣ／ＭＳ分离鉴定，并结合ｍ／ｚ１４９质量色谱图，确证东湖沉积物中含有９种邻苯二甲酸酯类化合物，它们是邻苯二甲酸二乙酯、二异丁酯、二正丁酯、二己酯、己基辛基酯、二－（２－乙基己基）酯、二辛酯、己基癸基酯和辛基癸基酯，其特征离子及峰度见表１。

Nine phthalic esters in sediments from East lake of wuhan city have been identified by GC/MS in a DB-5 silica capillary column.They are diethyl phthalate,diisobutyl phthalate,dibutyl phthalate,dihexyl phthalate,hexyloctyl phthalate,di-(2-ethylhexyl)phthalate,dioctyl phthalate,hexyldecyl phthalate,and octyldecyl phthalate.