引用本文:张建军,董铮,王悦.气相色谱法测定水体中多氯联苯Aroclor系列[J].环境监控与预警,2013,5(4):18-21
ZHANG Jian jun,DONG Zheng,WANG Yue.Determination of Aroclors in Water by Gas Chromatography[J].Environmental Monitoring and Forewarning,2013,5(4):18-21
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气相色谱法测定水体中多氯联苯Aroclor系列
张建军, 董铮, 王悦
镇江市环境监测中心站
摘要:
采用液液萃取—气相色谱法(GC-ECD)测定水体中多氯联苯Aroclor系列Aroclor1016、Aroclor1221、Aroclor1232、Aroclor1242、Aroclor1248、Aroclor1254、Aroclor1260。样品经正己烷溶剂萃取,再经全自动样品浓缩仪(EVA)浓缩萃取液至1mL,供气相色谱仪测定,外标法定量,加标回收率在75%~110%之间,检出限为0.1μg/L。该方法采用双塔双柱双检测器,排除了误检和其他物质的干扰,保证了分析结果的可靠性,方法简单、灵敏、准确。
关键词:  气相色谱法  多氯联苯  水体
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Determination of Aroclors in Water by Gas Chromatography
ZHANG Jian jun, DONG Zheng, WANG Yue
Zhenjiang Environmental Monitoring Central Station
Abstract:
7 Aroclors, namely Aroclor 1016, Aroclor 1221, Aroclor 1232, Aroclor 1242, Aroclor 1248, Aroclor 1254 and Aroclor 1260, in water was determined by GC〖CD2〗ECD using liquid liquid extraction. The sample was extracted with n hexane, and then concentrated to 1 mL by EVA, which was used for GC determination, with external standard method. Values of recovery were found in the range of 75%~110% and the detection limit was 0.1μg/L. In this method, the use of two detectors with dual tower and dual column can eliminate the disturbance of other materials and guarantee the analytical results reliability. This method was simple, sensitive and accurate.
Key words:  Gas Chromatography  polychlorinated biphenyls (PCBs)  water