液-液萃取衍生气相色谱法测定饮用水中卤乙酸  

DETERMINATION OF HALOACETIC ACIDS IN DRINKING WATER BY LIQUID-LIQUID EXTRACTION,DERIVATIZATION AND GAS CHROMATOGRAPHY

作　　者：陈小丽[1] 陈敏[1] 梁春霞[1] 

机构地区：[1]广州铁路疾病预防控制中心,广州510010

出　　处：《化学分析计量》2010年第4期66-68,共3页Chemical Analysis And Meterage

摘　　要：建立了测定饮用水中5种卤乙酸的检测方法。水样经硫酸酸化、叔丁基甲醚萃取、硫酸一甲醇衍生化后，用气相色谱电子捕获检测器测定。5种卤乙酸平均加标回收率为74．5％～104．0％，相对标准偏差为3．1％-11．0％（n=6），最低检出限为0．3—15．3ug／L。该法适用于饮用水中卤乙酸的测定。A method for determination of haloacetic acids（HAAs） in drinking water was established. Drinking water were determined by gas chromatography with electron - capture detection, after acidification with sulfuric acid, extraction with tert -butylmeth- yl ether and derivatization with sulfuric acid and methanol. The average recoveries of haloacetic acids were 74.5% - 104.0%. The relative standard deviation（RSD） was 3.1% - 11.0% （ n = 6 ） and the limit of detection was 0.3 - 15.3 ug/L. The method is suitable for determination of haloacetic acids in drinking water.

关 键 词：卤乙酸 饮用水 气相色谱 衍生化 

分 类 号：TQ658[化学工程—精细化工]