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Occurrence and Potential Risk of Polychlorinated Biphenyls in Surface Soils from the Yellow River Delta Natural Reserve, China

Author:
Yuan, Zijiao, Liu, Guijian, Lam, Michael Hon Wah, Liu, Houqi, Wang, Shanshan, Da, Chunnian
Source:
Bulletin of environmental contamination and toxicology 2019 v.102 no.6 pp. 843-847
ISSN:
0007-4861
Subject:
gas chromatography-mass spectrometry, polychlorinated biphenyls, risk, river deltas, soil, toxicity, China, Yellow River
Abstract:
A total of 28 PCB congeners were determined using gas chromatography-mass spectrometry (GC–MS) in 46 surface soils collected from the Yellow River Delta Natural Reserve (YRDNR) and its adjacent area, China. The total concentrations of PCBs in the YRDNR ranged from 0.149 to 4.32 ng/g, with a mean concentration of 0.802 ng/g. Light PCB congeners predominated in the present research area, which may be attributed to the atmospheric transportation and were also associated with the recent contamination of unintentionally produced PCBs from industrial processes. In addition, PCB 126 and PCB 169 were found to be the major toxicity contributors of dioxin-like PCBs in the YRDNR, which should require special focus.
Agid:
6457673