液-液微萃取气相色谱法测定小量水样中痕量硝基苯  

Determination of trace nitrobenzene in small aqueous samples used liquid-liquid micro-extraction and gas chromatographic methods

作　　者：张爱丽[1] 周集体[1] 滕丽曼[1] 马建勇[1] 王栋[1] 王竞[1] 

机构地区：[1]大连理工大学环境科学与工程学院,辽宁大连116011

出　　处：《中国环境监测》2001年第5期31-33,共3页Environmental Monitoring in China

摘　　要：使用 FID检测器和 DB-1大口径毛细柱不需要对有机相进行干燥处理。借助 1 0 ml容量瓶和自制的玻璃吸管 ,不必进行两相分离操作 ,萃取和取样操作均可在容量瓶中一次完成。利用有溶剂效应的柱温程序提高了柱效和检测灵敏度。 1 0 ml水样可获得 0 .5 μg/ L的检测下限。方法的精密度优于 4 % ,回收率大于 95 %。A method for determination of trace nitrobenzene in small aqueous samples has been developed Based on the improvement of extraction method and use of FID and a DB 1 capillary column of wide bore, organic phase needed not to be dried and extraction and sampling can be accomplished simultaneously by a 10mL graduated flask and a self made glass pipette The column efficiency and the detector sensitivity were enhanced using a column temperature program and solvent effect The detection limit of 0 5μg/L can be obtained with a 10mL water sample The recovery and relative standard deviation are more than 95% and less than 4%, respectively

关 键 词：液-液微萃取 气相色谱法 小量水样 硝基苯 水质监测 

分 类 号：X832[环境科学与工程—环境工程]