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Chitosan-poly(m-phenylenediamine)@Fe3O4 nanocomposite for magnetic solid-phase extraction of polychlorinated biphenyls from water samples

文献类型： 外文期刊

作者： Liao, Qie Gen 1 ; Wang, Dong Gen 1 ; Luo, Lin Guang 1 ;

作者机构： 1.Jiangxi Acad Agr Sci, Lab Qual & Safety Risk Assessment Livestock & Pou, Minist Agr, Agr Prod Qual Safety & Stand Inst, Nanchang 330200, Jiangxi, Peoples R China

关键词： CS-PPD@Fe3O4 nanocomposite;Gas chromatography-triple quadrupole mass spectrometry;Magnetic solid-phase extraction;Polychlorinated biphenyl

期刊名称：ANALYTICAL AND BIOANALYTICAL CHEMISTRY （ 影响因子：4.142； 五年影响因子：3.863 ）

ISSN： 1618-2642

年卷期： 2014 年 406 卷 29 期

页码：

收录情况： SCI

摘要： A extraction medium based on chitosan-poly(m-phenylenediamine) (CS-PPD) @Fe3O4 nanocomposite was synthesized by chemical polymerization of m-phenylenediamine in the presence of chitosan coated magnetic nanocomposite, and for the first time, used as the sorbent for the magnetic solid-phase extraction (MSPE) of seven polychlorinated biphenyls (PCB28, PCB52, PCB101, PCB118, PCB138, PCB153, and PCB180) at trace levels in water samples. Gas chromatography-triple quadrupole mass spectrometry (GC-MS/MS) was used for PCBs quantification and detection. Several factors related to MSPE efficiencies, such as type and amount of sorbent, extraction time, sample pH, and desorption conditions were investigated. Under the optimized conditions, an excellent linearity was observed in the range of 1.0-200 ng L-1 for PCB180, 0.5-200 ng L-1 for the other six PCBs with the correlation coefficients ranging from 0.9954 to 0.9993. The good recoveries at spiked levels of 10.0, 20.0, and 50.0 ng L-1 were obtained in the range of 94 %-108 %, and the coefficients of variations were less than 6 %. The proposed method was feasible, rapid, and easy to operate for the trace analysis of the PCBs in local aquaculture water, livestock breeding water, and sewage water samples.

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