摘要
建立了液液萃取、气相色谱-质谱法测定水质中34种有机氯农药和氯苯类混合物的分析方法;样品用正己烷液液萃取两次,萃取液浓缩后加入内标并定容至1.0 mL,用气相色谱-质谱仪进行了测定。结果表明:其方法检出限范围为0.009~0.045μg/L,相对偏差范围为1.1%~8.2%,加标回收率范围为63%~112%,可见采用该方法对地表水中的34种有机氯农药和氯苯类进行测定时,方法检出限低,重现性好,适用于水质中有机氯农药和氯苯类化合物的测定。
An analytical method for the determination of 34 organochlorine pesticides and chlorobenzene mixtures in water quality by liquid-liquid extraction and gas chromatography-mass spectrometry has been established;The sample were extracted twice with n-hexane liquid,concentrated with the internal calibration and determined to 1.0 mL by gas chromatography-mass spectrometer.The results showed that the relative deviation of 34 organochlorine pesticides and chlorobenzenes in water is 0.009μg/L~0.045μg/L,and the relative standard deviations(RSD)were between 1.1%and 8.2%;the recovery rate of samples is between 63%and 112%;indicating that the method has low limit and good reproducibility and is suitable for the determination of organochlorine pesticides and chlorobenzenes in water.
作者
魏凤
谢沙
毕军平
林海兰
刘沛
刘荔彬
朱颖
陈燕
吴文晖
Wei Feng;Xie Sha;Bi Junping;Lin Hailan;Liu Pei;Liu Libin;Zhu Ying;Chen Yan;Wu Wenhui(Hunan Ecological and Environmental Monitoring Center,State Environmental Protection Key Laboratory of Monitoring for Heavy Metal Pollutants,Changsha,Hunan 410019,China)
出处
《绿色科技》
2021年第24期1-5,共5页
Journal of Green Science and Technology
基金
湖南省环境保护科技项目(编号:湘财建指〔2010〕277号)。
关键词
有机氯
多氯联苯
气相色谱-质谱法
水质
organochlorine
polychlorinated biphenyls
gas chromatography-mass spectrometry
water quality
