Determination of Aroclor 1254 in Water Samples Using Polystyrene-Divinylbenzene Solid-Phase Extraction and Gas Chromatography  

作　　者：Fei Shen Yan-Juan Xu Ye Wang Pei-Yu Zhu Xiu-Li Dai Jing Chen Qian Zou 

机构地区：[1]Wuxi Environmental Monitoring Central Station,Wuxi 214121,People’s Republic of China [2]State Key Laboratory of Food Science and Technology,Jiangsu Key Laboratory of Anaerobic Biotechnology,School of Environmental and Civil Engineering,Jiangnan University,Wuxi 214122,People’s Republic of China

出　　处：《Journal of Analysis and Testing》2018年第4期306-311,共6页分析检测（英文）

基　　金：Environmental Monitoring and Research Foundation of Jiangsu Province(No.1621).

摘　　要：A method was developed for the determination of Aroclor 1254 in water samples using polystyrene-divinylbenzene(PS-DVB)solid-phase extraction(SPE)and gas chromatography(GC).The PS-DVB sorbent demonstrated good recoveries of Aroclor 1254 when sulfuric acid(1:1,v:v)was added to the samples.Sample quantification was performed using gas chroma-tography with a parallel column and dual electron capture detector.Factors in extraction method procedures were optimized,including sample pH,elution solvent,eluting volume and breakthrough volume.With the 1000 ml sample acidified to pH 1.0,a 6.0 ml n-hexane/ethyl acetate(1:1,v:v)elution solvent,and gas chromatographic determination,the recoveries of Aroclor 1254 in spiked water samples ranged from 90.6 to 104%.Across testing days,repeatability ranged from 4.7 to 7.6%.The method detection limit was 0.053μg/L.PS-DVB exhibited a broader pH stability range,satisfactory recoveries,and good repeatability for Aroclor 1254 extraction.The results indicate that these methods can be used to analyze trace amounts of Aroclor 1254,and represent a new analytical approach for determining polychlorinated biphenyls in water samples.

关 键 词：POLYSTYRENE-DIVINYLBENZENE Aroclor 1254 Gas chromatography 

分 类 号：O62[理学—有机化学]