小体积水样测定饮用水中二氯乙酸、三氯乙酸的含量  

Determination of dichloroacetic acid and trichloroacetic acid in small volume sample of drinking water

作　　者：王红卫[1] 赵慧琴[1] 李侃[1] 刘斌[1] 

机构地区：[1]河北省秦皇岛市疾病预防控制中心检验科,066000

出　　处：《职业与健康》2014年第21期3149-3150,共2页Occupation and Health

摘　　要：目的优化生活饮用水标准检验方法,建立利用小体积水测定生活饮用水中微量二氯乙酸（DCAA）、三氯乙酸（TCAA）的气相色谱测定方法。方法饮用水中DCAA、TCAA经过酸化、萃取、衍生后,采用气相色谱电子捕获检测器定量检测。结果 DCAA、TCAA在谱图上能够很好的分离,相关系数均大于0.999 5,回收率为94.5%-109.1%,RSD为3.1%-6.5%。结论该方法快速,准确,灵敏度高,适用于生活饮用水的常规批量检测。[Objective]To optimize the standard examination methods for drinking water,establish a method for the determination of dichloroacetic acid（ DCAA） and trichloroacetic acid（ TCAA） in small volume sample of drinking water by gas chromatography.[Methods]After the acidification,extraction and derivation,the DCAA and TCAA in drinking water were quantificationally detected by gas chromatography with electron capture detector. [Results]DCAA and TCAA were separated well on the spectral graph.The correlation coefficients for DCAA and TCAA were higher than 0. 999 5,the recoveries were between 94. 5% and 109. 1%,and RSD were 3. 1%-6. 5%. [Conclusion]The method is rapid,accurate and sensitive,which is suitable for the conventional batch testing of drinking water.

关 键 词：饮用水 消毒副产物 二氯乙酸 三氯乙酸 气相色谱 

分 类 号：R123.1[医药卫生—环境卫生学]