Distribution, historical trends and inventories of polychlorinated biphenyls in sediments from Yangtze River Estuary and adjacent East China Sea

Yang, Huayun; Zhuo, Shanshan; Xue, Bin; Zhang, Chunlong; Liu, Weiping

doi:10.1016/j.envpol.2012.05.003

Cited by 89 publications

(35 citation statements)

References 32 publications

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“…The river-sea boundary zone is widely considered as the accumulation area of pollutants because of its proximity to the emission source and "marginal filter" (Dahle et al, 2003;Yang et al, 2012). However, relatively lower levels of ∑ 24 PCBs were observed in the HE-2 site near the YRE, which is consistent with a previous report by Gao et al (2013) in 2010 and 2011.…”

Section: Spatial Distribution Of Pcbs and Tocsupporting

confidence: 82%

“…S1). The dominant PCBs had low chlorination levels of congeners in the surface sediments of ECS and Bohai Bay (Gao et al, 2013;Yang et al, 2012;Zhao et al, 2010).…”

Section: Occurrence Of Pcbsmentioning

confidence: 99%

“…PCB occurrence and distribution in Chinese marginal sea have been a concern in recent years. Congener compositions, geographical characteristic, TOC, and grain size have been used to investigate their distribution characteristics and sources (Duan et al, 2013;Gao et al, 2013;Yang et al, 2011Yang et al, , 2012. Studies have shown that PCBs are transferred into the East China Sea (ECS) mainly via surface runoff, industrial wastewater, and atmospheric deposition.…”

Section: Introductionmentioning

confidence: 99%

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Use of lipid biomarkers for identification of regional sources and dechlorination characteristics of polychlorinated biphenyls in the East China Sea

Fan

Lan

et al. 2014

Science of The Total Environment

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Section: Spatial Distribution Of Pcbs and Tocsupporting

confidence: 82%

“…S1). The dominant PCBs had low chlorination levels of congeners in the surface sediments of ECS and Bohai Bay (Gao et al, 2013;Yang et al, 2012;Zhao et al, 2010).…”

Section: Occurrence Of Pcbsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Use of lipid biomarkers for identification of regional sources and dechlorination characteristics of polychlorinated biphenyls in the East China Sea

Fan

Lan

et al. 2014

Science of The Total Environment

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“…3) was similar to those observed in sediments in the Pearl River Delta and Korea (Lee et al 2001;Wang et al 2011a) but different from those in the Yangtze River Estuary and East China Sea (Yang et al 2012). The ratio of (DDD+DDE)/DDT is commonly used as an indicator of the resident time and degree of degradation of DDT in the environment.…”

Section: Compositions and Source Identificationsupporting

confidence: 55%

Occurrence, sources, and ecological risks of PBDEs, PCBs, OCPs, and PAHs in surface sediments of the Yangtze River Delta city cluster, China

Zhang

Yang

Chen

et al. 2014

Environ Monit Assess

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Polybrominated diphenyl ethers (PBDEs), organochlorine pesticides (OCPs), polychlorinated biphenyls (PCBs), and polycyclic aromatic hydrocarbons (PAHs) in 25 surface sediments in three cities (Nantong, Wuxi, and Suzhou) in the Yangtze River Delta, eastern China were measured. The mean concentrations were 378, 45.8, 1.98, 4,002 ng/g for PBDEs, OCPs, PCBs, and PAHs, respectively. Their levels in the sediments in the three cities were generally consistent with the city industrialization. PBDEs and OCPs were markedly dominated by deca-BDE (>90 %) and DDTs (>70 %). A principle component analysis of the analytes identified three major factors suggesting different sources of the contaminants in the sediments. PBDEs and the organic carbon in the sediments have common sources from industrial activities; whereas OCPs and PCBs, correlated with the second factor, were mainly from historical sources. The third factor with loadings of PAHs is indicative of various combustion sources. Ecological risk assessment indicated that the potential highest risk is from DDTs, for which 22 sites exceed the effects range low (ERL) values and three sites exceed the effects range median (ERM) value.

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“…There was no significant difference among sites Y1, Y2, Y3, and Y5. The variability in the concentrations and geographic distribution of PCDTs in water showed that PCDTs varied depending on the pollution sources such as various factories, residences, and discharge outlets (Lake et al 1981;Wang et al 2008;Yang et al 2012). Relatively high P PCDT concentrations occurred at sampling sites Y4 and Y6.…”

Section: P Pcdt Concentrations and Distributions In Sediments And Watermentioning

confidence: 95%

Occurrence of Polychlorodibenzothiophenes in Nanjing Section of the Yangtze River, China

Zhang

et al. 2015

Arch Environ Contam Toxicol

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Sediment and water samples collected from 8 sites of the Yangtze River in Nanjing section were characterized with 31 congeners of polychlorodibenzothiophenes (PCDTs). Concentrations and percentage compositions of these PCDTs in water and sediments were analyzed by gas chromatography-mass spectrometry. Results showed that ∑PCDT concentrations in sediments were higher (0.86-1.75 μg/kg) than those in water (0.56-1.30 μg/L). A linear relationship existed between ∑PCDT concentrations and total organic carbon content in sediments, whereas there was a poor linearity between ∑PCDTs concentrations and dissolved organic carbon content in water phase. Moreover, percentage compositions showed that penta-chlorinated DTs were the predominant congeners both in sediments and water. Differences existed in the percentage compositions between water and sediments. Highly chlorinated DTs accounted for a larger proportion in sediments than those in water. In conclusion, the present study showed the prevalent contamination by PCDTs in sediments and water from the Nanjing section of the Yangtze River.

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Distribution, historical trends and inventories of polychlorinated biphenyls in sediments from Yangtze River Estuary and adjacent East China Sea

Cited by 89 publications

References 32 publications

Use of lipid biomarkers for identification of regional sources and dechlorination characteristics of polychlorinated biphenyls in the East China Sea

Use of lipid biomarkers for identification of regional sources and dechlorination characteristics of polychlorinated biphenyls in the East China Sea

Occurrence, sources, and ecological risks of PBDEs, PCBs, OCPs, and PAHs in surface sediments of the Yangtze River Delta city cluster, China

Occurrence of Polychlorodibenzothiophenes in Nanjing Section of the Yangtze River, China

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