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

Yuan, Zhiwen; Liu, Guijian; Lam, Michael; Liu, Houqi; Wang, Shanshan; Da, Chunnian

doi:10.1007/s00128-019-02617-x

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Potential Toxicity and Risk Of Pcbs1

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2022

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“…The TEQ of the ∑DL-PCBs in the SIP varied from "not detected" to 0.029 ng g -1 (Mean: 0.0082 ng g -1 ) and was below the soil contamination intervention value (1×10 -4 μg g -1 ) of dioxins in China (Fig. 4) [34,35]. Among the detectable DL-PCBs, the TEQ of PCB 169 and PCB 126 contributed most to the PCBs toxicity in the sediments from the SIP, which accounted for 63 % and 36% of the total DL-PCBs, respectively (Fig.…”

Section: Potential Toxicity and Risk Of Pcbsmentioning

confidence: 99%

Polychlorinated Biphenyls (PCBs) in Urban Stream Sediments from Suzhou Industrial Park in China: Occurrence and Potential Risk

Yuan¹,

Wang²,

Wu³

et al. 2022

Pol. J. Environ. Stud.

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The concentration, spatial distribution, homologue profiles, sources, toxicity and risk of PCBs in urban stream sediments from a national eco-industrial park named Suzhou Industrial Park (SIP) in China were investigated in this work. Concentrations of ∑PCBs varied from 0.13 to 4.7 ng g -1 , with an average value of 1.7±1.2 ng g -1 . Spatial variations indicated that PCB concentrations had no correlation with land uses in the SIP. Tetra-PCBs and hexa-PCBs were the most abundant PCB homologues, which were different from those found in Chinese commercial PCBs and might be mainly derived from other sources. The potential toxicity and risk of PCBs here might be negligible based on the total equivalent concentration (TEQ) analysis and sediment quality guidelines (SQG).

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Section: Potential Toxicity and Risk Of Pcbsmentioning

confidence: 99%