Deposition flux and mass inventory of polychlorinated biphenyls in sediments of the Yangtze River Estuary and inner shelf, East China Sea: Implications for contributions of large-river input and e-waste dismantling

Zhao, Tiange; Guo, Zhiyong; Yao, Peng; Hu, Limin; Wu, Ziqian; Lin, Tian

doi:10.1016/j.scitotenv.2018.08.076

Cited by 21 publications

(7 citation statements)

References 47 publications

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“…Some studies have reported on the occurrence and distribution of PCBs in the source water and sediment of the Yangtze River [18][19][20], but the transport of PCBs along the Yangtze River in water, sediment, and SPM remains overlooked. In this work, we calculated the fugacity fraction of PCBs in sediment based on the PCBs concentrations determined by isotope dilution HRGC/HRMS, to evaluate the sediment-water diffusion of PCBs and their risk in the drinking water source of the Yangtze River.…”

Section: Introductionmentioning

confidence: 99%

Polychlorinated biphenyls in the drinking water source of the Yangtze River: characteristics and risk assessment

et al. 2020

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Background: As the longest river in Asia, the Yangtze River flows through the most industrialized cities in China and provides critical ecological services for agriculture, industry, and transportation. Polychlorinated biphenyls (PCBs) have been banned for many years, but trace amounts of PCBs still exist as persistent organic pollutant in drinking water and are an ecotoxicological problem. In this work, we collected water, sediment, and suspended particulate matter (SPM) samples along the Yangtze River, to study the distribution and transport of PCBs for the risk assessment of the Yangtze River as a drinking water source.Results: The ΣPCBs concentrations in water, sediment, and SPM ranged in 0.04-11 ng/L, 0.33-69 ng/g, and 0.72-153 ng/L, respectively. The main pollutants were PCB17, 18, 28, 47, and 118 in the Yangtze River. The ff SW value of PCB18 and PCB28 all exceeded 0.50, whereas the ff SW value of PCB47 and PCB118 (except for PCB118 at Y-4) was less than 0.50. The toxic equivalent quantity (TEQ) range of PCBs in water and in sediment was ND-5.55 pg-TEQ/L and ND-2.51 pg-TEQ/g, respectively. Conclusions:In both water and sediment, lower chlorinated PCBs are dominant in the middle reaches and higher chlorinated PCBs are dominant at downstream. In contrast, SPM is dominated by tetra-CBs. The ff SW values reveal a net redissolution of lower PCBs from sediments to water but a net sorption of higher PCBs from water to sediment. The PCBs in water and sediment at downstream pose potential ecological risk, but the drinking water does not have a non-carcinogenic risk for humans.

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Section: Introductionmentioning

confidence: 99%

Polychlorinated biphenyls in the drinking water source of the Yangtze River: characteristics and risk assessment

et al. 2020

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“…PCB209 are non-Aroclor congeners that are prevalent in phthalocyanine-type pigments and can be used to identify the use or discharge of a pigment [62]. PCB123, PCB126, and PCB114 are mainly used as a paint additive [63]. Moreover, PCB-206, PCB-208, and PCB-209 are produced during the manufacturing of titanium dioxide and titanium tetrachloride [39].…”

Section: Source Apportionment Of Pcbs By Positive Matrix Factorizatio...mentioning

confidence: 99%

Occurrence, Potential Risk Assessment, and Source Apportionment of Polychlorinated Biphenyls in Water from Beiluo River

Wang

Yan

Chang

et al. 2023

Water

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Polychlorinated biphenyls (PCBs) are highly hazardous, persistent, and bioaccumulative substances that pose a threat to water quality in a number of locations, including the Beiluo River in Shaanxi Province, China. However, little is known about the contribution of PCBs to the Beiluo River. In this study, in order to look into the impact of sources on the water of the Beiluo River, the discovered PCB congeners in water were examined on a regional scale. The concentration of PCBs in water across Beiluo River was in the range from 0.065 to 1.92 ng L−1, and the average concentration was 0.37 ng L−1. The main PCB sources in the Beiluo River waterbody were found using positive matrix factorization (PMF). Source apportionment results indicated that the PCB pollution of the Beiluo River was mostly caused by industrial emissions, technical PCB mixtures, and coal and wood combustion. According to current ecological risk assessment guidelines, the PCB concentrations found in this study may have a negative impact on biological systems. Overall, the new information about the presence of several PCBs in the water of the Beiluo River justifies the need for urgent management actions, as well as long-term monitoring efforts, to protect ecosystems. Future investigations of these chemicals in China may use the conclusions of this first ecological risk level assessment on the PCB contamination in the waterbody of the Beiluo River as a guide.

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“…of PCBs in the source water and sediment of the Yangtze River [18,19,20], but the transport of PCBs along the Yangtze River in water, sediment, and SPM remains overlooked. In this work, we calculated the fugacity faction of PCBs in sediment based on the PCBs concentrations determined by isotope dilution HRGC/HRMS, to evaluate the sediment-water diffusion of PCBs and their risk in the drinking water source of the Yangtze River.…”

Section: Some Studies Have Reported On the Occurrence And Distributionmentioning

confidence: 99%

Polychlorinated Biphenyls in the Drinking Water Source of the Yangtze River: Characteristics and Risk Assessment

Cui

Dong

Huang

et al. 2019

Preprint

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Background As the longest river in Asia, the Yangtze River flows through the most industrialized cities in China and provides critical ecological services for agriculture, industry, and transportation. Polychlorinated biphenyls (PCBs) have been banned for many years, but trace amounts of PCBs still exist as persistent organic pollutant in drinking water and are an ecotoxicological problem. In this work, we collected water, sediment, and suspended particulate matter (SPM) samples along the Yangtze River, to study the distribution and transport of PCBs for the risk assessment of the Yangtze River as a drinking water source.Results The ΣPCBs concentrations in water, sediment, and SPM ranged in 0.044–10.98 ng/L, 0.33–69.43 ng/g, and 0.72–152.66 ng/L, respectively. The main pollutants were PCB17, 18, 28, 47 and 118 in the Yangtze River. The ff SW value of PCB18 and PCB28 all exceeded 0.5, whereas the ff SW value of PCB47 and PCB118 (except for PCB118 at Y-4) were less than 0.5. The toxic equivalent quantity (TEQ) range of PCBs in water and in sediment was 0–5.55 pg-TEQ/L and 0–2.51 pg-TEQ/g, respectively.Conclusions In both water and sediment, lower chlorinated PCBs are dominant in the middle reaches and higher chlorinated PCBs are dominant at downstream. In contrast, SPM is dominated by tetra-CBs. The ff SW values reveal a net redissolution of lower PCBs from sediments to water but a net sorption of higher PCBs from water to sediment. The PCBs in water and sediment at downstream pose potential ecological risk, but the drinking water does not have a non-carcinogenic risk for humans.

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Deposition flux and mass inventory of polychlorinated biphenyls in sediments of the Yangtze River Estuary and inner shelf, East China Sea: Implications for contributions of large-river input and e-waste dismantling

Cited by 21 publications

References 47 publications

Polychlorinated biphenyls in the drinking water source of the Yangtze River: characteristics and risk assessment

Polychlorinated biphenyls in the drinking water source of the Yangtze River: characteristics and risk assessment

Occurrence, Potential Risk Assessment, and Source Apportionment of Polychlorinated Biphenyls in Water from Beiluo River

Polychlorinated Biphenyls in the Drinking Water Source of the Yangtze River: Characteristics and Risk Assessment

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