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液液萃取-气相色谱法测定饮用水中硝基苯类化合物
引用本文:张志朋,邹志勇,彭靖恺,李常丽,黎泳珊.液液萃取-气相色谱法测定饮用水中硝基苯类化合物[J].环境监测管理与技术,2014,26(6):46-49.
作者姓名:张志朋  邹志勇  彭靖恺  李常丽  黎泳珊
作者单位:桂林市环境监测中心站,广西 桂林,541002
摘    要:采用液液萃取-气相色谱法测定饮用水中10种硝基苯类化合物,通过萃取条件优化试验,选择正己烷为萃取剂,使目标物在0μg/L~38.5μg/L之间线性良好,检出限为0.002μg/L ~0.005μg/L。实际饮用水样的加标回收率为80.8%~104%,RSD<3%。用该方法测定桂林市4个水厂饮用水,结果硝基苯、间-二硝基苯、2,4-二硝基氯苯未检出,其余7种硝基苯类化合物虽有检出,但检出值均低于标准规定的限值。

关 键 词:硝基苯类化合物  液液萃取  气相色谱法  饮用水

Determination for Nitrobenzene compounds of Drinking Water by Liquid liquid Extraction Gas Chromatography
ZHANG Zhi-peng , ZOU Zhi-yong , PENG Jing-kai , LI Chang-li , LI Yong-shan.Determination for Nitrobenzene compounds of Drinking Water by Liquid liquid Extraction Gas Chromatography[J].The Administration and Technique of Environmental Monitoring,2014,26(6):46-49.
Authors:ZHANG Zhi-peng  ZOU Zhi-yong  PENG Jing-kai  LI Chang-li  LI Yong-shan
Institution:( Guilin Environmental Monitoring Centre, Guilin,Guangxi 541002, China)
Abstract:A liquid-liquid extraction gas-chromatography method by different solvents for determination of nitrobenzene-compounds in drinking water was established.The determination of extraction by n-hexane extrac-tion of samples detection limit,precision and the recovery rate is superior to the other three solvents,nitroben-zene-compounds spiked recovery rates come to be 80.8%~104%,the relative standard deviations(RSD)were less than 3%,the method determination limits were 0.002 μg/L~0.005 μg/L.This method can meet the test requirements.Drinking water samples from 4 water factories in Guilin were analyzed by optimized test method. The results indicates that,nitrobenzene,1,3-dinitrobenzene and 1-chloro-2,4-dinitrobenzene were not detected, other 7 nitrobenzene-compounds were detected,but the concentrations were all less than environmental quality standards for surface water and standards for drinking water quality in the provides of limited value.
Keywords:Nitrobenzene compounds  Liquid liquid extraction  Gas chromatography method  Drinking water
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