Risk assessment of organochlorine pesticides in drinking water source of the Yangtze River

Jin, Xiaoling; Liu, Yan; Qiao, Xiaocui; Guo, Rui; Liu, Chengyou; Wang, Xing; Zhao, Xingru

doi:10.1016/j.ecoenv.2019.109390

“…As the number of chlorine atoms increases, PCBs tend to reach saturation in water and show migration from water to sediments. PCBs are different from OCPs according to Jin and Liu et al, whose ff SW values show net sorption from water to sediment [27,36].…”

Section: Transport Of Pcbs Among Multi-matrix Compartmentsmentioning

confidence: 98%

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

Xiao-ai

¹

,

Dong

²

,

Huang

³

et al. 2020

Self Cite

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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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“…EF is the adult exposure frequency (365 d/a); SF is the carcinogenic slope factor (2 kg were taken from the Chinese population exposure parameter manual [27].…”

Section: Data and Statistical Analysesmentioning

confidence: 99%

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

Cui

¹

,

Dong

²

,

Huang

³

et al. 2020

Preprint

Self Cite

View full text Add to dashboard Cite

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.

show abstract

“…As the number of chlorine atoms increases, PCBs tend to reach saturation in water and show migration from water to sediments. PCBs are different from OCPs according to Jin and Liu et al, whose ff SW values show net sorption from water to sediment[27,36]. The ff SW values of PCB18, 28, 47, and 118 in the Yangtze River.…”

mentioning

confidence: 94%

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

Cui

¹

,

Dong

²

,

Huang

³

et al. 2019

Preprint

Self Cite

0

View full text Add to dashboard Cite

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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Risk assessment of organochlorine pesticides in drinking water source of the Yangtze River

Cited by 52 publications

References 45 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

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

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