Residues of Polychlorinated Biphenyls (PCBs) in Sediment from CauBay River and Their Impacts on Agricultural Soil, Human Health Risk in KieuKy Area, Vietnam

Toan, Vu Duc; Quy, Nguyen Phuong

doi:10.1007/s00128-015-1581-x

Cited by 19 publications

(3 citation statements)

References 7 publications

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“…Whereas, the comparison of the mean PCBs concentration in sediments of Post-monsoon with other studies showed that the ∑PCBs concentration of this study was significantly lower than those reported from Makelele, Kalamu, and Nsanga, Congo (Kilunga et al 2017); River Ravi, Pakistan (Baqar et al 2017); Liaohe River, China (Lv et al 2020); CauBay River, Vietnam (Toan and Quy 2015); Sarno River, Italy (Montuori et al 2014); Soan River, Pakistan (Malik et al 2014); and River Chenab, Pakistan (Eqani et al 2012). However, the ∑PCBs concentration was slightly lower or somewhat comparable to those studies recorded from River Thames, England (Lu et al 2017); Yamuna River, India (Kumar et al 2013); Songhua River, China (Cui et al 2016) and Bahlui River, Romania (Neamtu et al 2009).…”

Section: Comparison With Previous Studies Worldwidecontrasting

confidence: 85%

Seasonal Distributions, and Risk Assessment of Polychlorinated Biphenyls (PCBs) in the Surficial Sediments from the Turag River, Dhaka, Bangladesh

Chowdhury

Shammi

Rahman

et al. 2021

Preprint

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Polychlorinated biphenyls (PCBs) assessment in sediments of Turag River, Dhaka, Bangladesh has been conducted for the first time. This River provides critical ecological services to agriculture, industry, and transportation. However, the Turag River is one of the most industrially polluted rivers surrounding Dhaka in Bangladesh. In this study, six PCB congeners namely PCB 10, PCB 28, PCB 52, PCB 138, PCB 153, and PCB 180, were analyzed in surface sediments by GC-ECD at 9 sampling sites. Pre-monsoon and post-monsoon season sampling were collected in this study. The total concentrations of PCBs varied from 344.49 to 0.22 ng/g dw and 10.6 to 1.68 ng/g dw in pre-monsoon and post-monsoon, respectively. The paramount contributor congener to the total PCBs was PCB 180 and was found at all sites. The ecological risk assessment indicated a high potential risk in pre-monsoon (Eri = 277.32) and low potential risk in post-monsoon (Eri = 25.69). Sediment quality guideline quotients (SQGQs) showed that PCBs in pre-monsoon would cause no or moderate biological effects on organisms at most sampling sites except in surface sediments of site S5 (high biological effects), while no adverse ecotoxicological effect was observed in post-monsoon. Considering both probable effect level (PEL) and threshold effect level (TEL), the new sediment quality guideline quotient (NSQGQ) showed that in post-monsoon PCBs contamination would cause moderate biological effects, while in pre-monsoon the findings remained consistent with the findings of SQGQ. This study gave a quick look at the PCB contamination scenario in the Turag River sediments and also allowed for a comparison between the investigated River and other rivers worldwide.

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Section: Comparison With Previous Studies Worldwidecontrasting

confidence: 85%

Seasonal Distributions, and Risk Assessment of Polychlorinated Biphenyls (PCBs) in the Surficial Sediments from the Turag River, Dhaka, Bangladesh

Chowdhury

Shammi

Rahman

et al. 2021

Preprint

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“…Thus simply banning manufacture is in insufficient to reduce exposure 4 . PCBs can threaten human health via their potential carcinogenic effects 5 . Adverse health effects such as neurological effects, in humans exposed to PCBs have been investigated in laboratory and epidemiological studies 6 .…”

mentioning

confidence: 99%

Enantio-alteration of gene transcription associated with bioconcentration in adult zebrafish (Danio rerio) exposed to chiral PCB149

Chai

Cui

et al. 2016

Sci Rep

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Enantioselective enrichment of chiral PCB149 (2,2’,3,4’,5’,6-hexachlorobiphenyl) was analysed in adult zebrafish (Danio rerio) exposed to the racemate, (−)-PCB149, and (+)-PCB149. Greater enrichment of (−)-PCB149 compared to (+) PCB149 was observed following 0.5 ng/L exposure; however, as the exposure time and concentration increased, racemic enrichment was observed in adult fish exposed to the racemate. No biotransformation between the two isomers was observed in fish exposed to single enantiomers. When zebrafish were exposed to different forms of chiral PCB149, enantioselective expression of genes associated with polychlorinated biphenyls (PCBs) was observed in brain and liver tissues and enantioselective correlations between bioconcentration and target gene expression levels were observed in brain and liver tissues. The strong positive correlations between expression levels of target genes (alox5a and alox12) and PCB149 bioconcentration suggest that prolonged exposure to the racemate of chiral PCB149 may result in inflammation-associated diseases. Prolonged exposure to (−)-PCB149 may also affect metabolic pathways such as dehydrogenation and methylation in the brain tissues of adult zebrafish. Hepatic expression levels of genes related to the antioxidant system were significantly negatively correlated with bioconcentration following exposure to (+)-PCB149.

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“…Until 2015, sediment levels of PCBs decreased compared to 31.72-167.32 ng/g [5]. Toan et al reported that the main source of contamination in Hanoi city could originate from the dielectric oil used in old hanging transformers and capacitors [6].…”

Section: Introductionmentioning

confidence: 99%

Contamination of Selected Persistent Organic Pollutants (POPs) in Sediment of Some Areas in Vietnam

Toan¹,

Mai²

2018

Sedimentation Engineering

Self Cite

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This chapter evaluates the contamination of selected persistent organic pollutants (S-POPs) in the sediment of some typical areas in Vietnam. S-POPs are composed of dichlorodiphenyltrichloroethanes (DDTs), hexachlorocyclohexanes (HCHs), polychlorinated biphenyl (PCBs), and polybrominated diphenyl ethers (PBDEs). The collected data and analyzed results indicated the wide occurrence of significant S-POPs residues in studied areas. The main sources of S-POPs are discussed by using composition analyses and diagnostic ratios of S-POPs indicator. Ecotoxicological risk of S-POPs is assessed. The obtained results have contributed to the assessment of S-POPs fate in the environmental sediment in Vietnam.

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Residues of Polychlorinated Biphenyls (PCBs) in Sediment from CauBay River and Their Impacts on Agricultural Soil, Human Health Risk in KieuKy Area, Vietnam

Cited by 19 publications

References 7 publications

Seasonal Distributions, and Risk Assessment of Polychlorinated Biphenyls (PCBs) in the Surficial Sediments from the Turag River, Dhaka, Bangladesh

Seasonal Distributions, and Risk Assessment of Polychlorinated Biphenyls (PCBs) in the Surficial Sediments from the Turag River, Dhaka, Bangladesh

Enantio-alteration of gene transcription associated with bioconcentration in adult zebrafish (Danio rerio) exposed to chiral PCB149

Contamination of Selected Persistent Organic Pollutants (POPs) in Sediment of Some Areas in Vietnam

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