Determination of 7 kinds of polychlorinated biphenyls in water by magnetic solid phase extraction/thermal desorption-gas chromatography-tandem mass spectrometry

Authors

FU Shan-liang, Technology Center of Changsha Customs, Changsha, Hunan 410004 , China ；Hunan Academy of Inspection and Quarantine, Changsha, Hunan 410004 , China
ZHANG Fan, Hunan Academy of Inspection and Quarantine, Changsha, Hunan 410004 , China ；Changsha Environmental Protection College, Changsha, Hunan 410004 , China
LU Jing, Technology Center of Changsha Customs, Changsha, Hunan 410004 , China ；Hunan Academy of Inspection and Quarantine, Changsha, Hunan 410004 , China
CHEN Lian, Technology Center of Changsha Customs, Changsha, Hunan 410004 , China ；Hunan Academy of Inspection and Quarantine, Changsha, Hunan 410004 , China
CHENG Jing, Technology Center of Changsha Customs, Changsha, Hunan 410004 , China ；Hunan Academy of Inspection and Quarantine, Changsha, Hunan 410004 , China
ZHU Shao-hua, Technology Center of Changsha Customs, Changsha, Hunan 410004 , China ；Hunan Academy of Inspection and Quarantine, Changsha, Hunan 410004 , China

Abstract

Magnetic solid phase extraction(MSPE) based on Fe3O4-grafted graphene oxide (Fe₃O₄@GO) was combined with thermal desorption-gas chromatography-tandem mass spectrom-etry(TD-GC-MS/MS) to develop an organic solvent free quantitative analysis method for the determination of 7 kinds of indicative polychlorinated biphenyls(PCBs) in water. The factors affecting the extraction efficiency, induding amount of Fe₃O₄@GO, extraction time and pH value of water sample, were investigated. Under the control of the optimized conditions, an excellent linearity was observed in the range of 2~100 ng/L for the 7 kinds of PCBs, with the correlation coefficients(r)＞0.98. The detection limits (S/N=3) and the quantitation limits (S/N=10) were 0.18~0.40 ng/L and 0.57~1.32 ng/L, respectively. The mean recoveries at 2 spiked levels ranged from 85.9% to 106.2% with relative standard deviations(RSD) of 4.0%~13.1%. The proposed method could be used in the monitoring of trace PCBs contaminants in water sample.

Publication Date

3-28-2020

First Page

75

Last Page

79

DOI

10.13652/j.issn.1003-5788.2020.03.014

Recommended Citation

Shan-liang, FU; Fan, ZHANG; Jing, LU; Lian, CHEN; Jing, CHENG; and Shao-hua, ZHU (2020) "Determination of 7 kinds of polychlorinated biphenyls in water by magnetic solid phase extraction/thermal desorption-gas chromatography-tandem mass spectrometry," Food and Machinery: Vol. 36: Iss. 3, Article 14.
DOI: 10.13652/j.issn.1003-5788.2020.03.014
Available at: https://www.ifoodmm.cn/journal/vol36/iss3/14

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