Agrochemical and polychlorobyphenyl (PCB) residues in the Mekong River delta, Vietnam

Carvalho, Fernando P.; Villeneuve, J. P.; Cattini, Chantal; Tolosa, I.; Thuan, Dao Dinh; Nhan, Dang Duc

doi:10.1016/j.marpolbul.2008.04.042

Cited by 64 publications

(17 citation statements)

References 34 publications

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“…The PCB concentrations in the present study were comparable to data from other fresh water bodies in Africa: the Nile River in Egypt (El-Kady et al, 2007), Ghar El Melh lagoon in Tunisia (Ameur et al, 2011), Pangani River basin in Tanzania (Hellar-Kihampa et al, 2013) and Congo River basin in the Democratic Republic of Congo (Verhaert et al, 2013). The results were also in the range of data found in sediments from tropical areas in Asia: the Mekong River delta in Vietnam (Carvalho et al, 2008) and riverine and coastal waters of Surabaya in Indonesia (Ilyas et al, 2011). The levels were lower compared to concentrations reported for industrialized areas in Europe and United States of America (Covaci et al, 2005;Vane et al, 2007;Vives et al, 2007;Castells et al, 2008;Jiao et al, 2009;Martinez et al, 2010;Mohammed et al, 2011) (Table 2).…”

Section: Statistical Data Analysissupporting

confidence: 88%

Polychlorinated biphenyls in sediments and fish species from the Murchison Bay of Lake Victoria, Uganda

Ssebugere

Sillanpää

Wang

et al. 2014

Science of The Total Environment

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• High concentrations of PCBs were found at sites near wastewater discharges.• The PCB concentrations were low to moderate compared to other locations worldwide.• Based on the European Commission set TEQ, the fish were fit for human consumption. Polychlorinated biphenyls (PCBs) were determined in sediments and two fish species collected from the Murchison Bay in Lake Victoria, using high resolution gas chromatography coupled to a high resolution mass spectrometer. Total PCB concentrations (Σ 18 PCBs) varied widely with mean values ranging from 777 to 4325 pg g −1 dry weight (dw) for sediments and 80 to 779 pg g −1 wet weight (ww) for fish. The PCB levels in the sediments were significantly higher at the station closest to Nakivubo channel, presumably due to effluents discharged by the channel, which may contain domestically produced commercial PCB mixtures. For fish, the concentrations in Nile perch (Lates niloticus) were significantly greater than those in Nile tilapia (Oreochromis niloticus) at all study stations, possibly due to dietary differences among species. World Health Organization-toxic equivalents (WHO 2005 -TEQs) for the dioxin-like PCBs were 0.04-0.64 pg g −1 dw and 0.01-0.39 pg g −1 ww for sediments and fish, respectively. The non-ortho PCBs exhibited the highest contribution to the Σ 12 TEQs (N75%) compared to the mono-ortho PCBs in both fish species. The TEQs in the present study were lower than many reported worldwide in literature for fish and were within the permissible level recommended by the European Commission, implying that the fish did not pose health hazards related to PCBs to the consumers. a b s t r a c t a r t i c l e i n f o

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Section: Statistical Data Analysissupporting

confidence: 88%

Polychlorinated biphenyls in sediments and fish species from the Murchison Bay of Lake Victoria, Uganda

Ssebugere

Sillanpää

Wang

et al. 2014

Science of The Total Environment

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“…In our previous study, very high PCB levels were also found in water and sediment samples near the e-waste recycling workshops [13,21,24], thus confirming the above hypothesis. The levels of P DDTs in our study were at a similar level to those in fish collected in other countries in recent studies, such as the Mekong River Delta in Vietnam and the Sulejowski Reservoir in central Poland [6,25,26], whereas the level of P PCBs in our study were much higher than those in the above-mentioned studies. Comparisons of DDT and PCB concentrations between our study and other studies on non-e-waste recycling areas strongly verified the hypothesis that the PHC contaminant pattern in the studied e-waste region has been changed by the extensive recycling activities.…”

Section: Ddts and Pcbssupporting

confidence: 86%

Contaminant pattern and bioaccumulation of legacy and emerging organhalogen pollutants in the aquatic biota from an e-waste recycling region in South China

Zhang

Luo

et al. 2010

Environmental Toxicology and Chemistry

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Legacy pollutants, polychlorinated biphenyls (PCBs), dichlorodiphenyl trichloroethane and its metabolites (DDTs), and some emerging organhalogen pollutants, such as polybrominated diphenyl ethers (PBDEs), hexabromobenzene (HBB), pentabromotoluene (PBT), 2,3,4,5,6-pentabromoethyl benzene (PBEB), 1,2-bis (2,4,6-tribromophenoxy) ethane (BTBPE), and dechlorane plus (DP), were detected in an aquatic food chain (invertebrates and fish) from an e-waste recycling region in South China. Polychlorinated biphenyls, DDTs, PBDEs, and HBB were detected in more than 90% of the samples, with respective concentrations ranging from not detected (ND)-32,000 ng/g lipid weight, ND-850 ng/g lipid weight, 8 to 1,300 ng/g lipid weight, and 0.28 to 240 ng/g lipid weight. Pentabromotoluene, PBEB, BTBPE, and DP were also quantifiable in collected samples with a concentration range of ND-40 ng/g lipid weight. The elevated levels of PCBs and PBDEs in the organisms, compared with those in non-e-waste regions in South China, suggest that these two kinds of pollutants derived mainly from e-waste recycling practices. Hexabromobenzene was significantly correlated with PBDEs, implying that HBB come from the release of e-waste along with PBDEs and/or the pyrolysis of BDE209. Most of the compounds whose trophic magnification factor (TMF) could be calculated were found to biomagnify (TMF > 1). Hexabromobenzene was also found, for the first time, to biomagnify in the present food web, with a TMF of 2.1.

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“…Thus, PCB contamination is receiving special attention in Vietnam. From the viewpoint of PCB contamination, several places in Vietnam are found to have PCB residues in sediment such as Tam Giang-Cau Hai Lagoon (Frignani 2007) and the Mekong River (Carvalho et al 2008). Several studies have focused on the contamination of PCBs in industrialized or urbanized areas, while information on agricultural areas is limited.…”

mentioning

confidence: 99%

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

Toan

Quy²

2015

Bull Environ Contam Toxicol

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An evaluation of the PCB residues from CauBay River and KieuKy area, Vietnam was carried out. CauBay River has been playing an important role in irrigated water supply for agriculture activities at KieuKy area in the downstream. The PCBs concentrations of sediment, soil samples were analyzed and obtained results indicated the wide extent of contamination of PCBs in CauBay River (from 30.74 to 167.35 ng g(-1) dry weight) and KieuKy area (from 21.62 to 60.22 ng g(-1) dry weight). This clearly reflected the effect of PCB residues from CauBay River to the quality of agricultural soil of the KieuKy area. The PCBs composition analyses in the samples reflect their long-time release. The total cancer risk of PCBs in the soil of KieuKy fell into the very low range suggesting low risk. However, since PCBs were the species of POPs with more concern in this area, ecological risk assessment should be further investigated.

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Agrochemical and polychlorobyphenyl (PCB) residues in the Mekong River delta, Vietnam

Cited by 64 publications

References 34 publications

Polychlorinated biphenyls in sediments and fish species from the Murchison Bay of Lake Victoria, Uganda

Polychlorinated biphenyls in sediments and fish species from the Murchison Bay of Lake Victoria, Uganda

Contaminant pattern and bioaccumulation of legacy and emerging organhalogen pollutants in the aquatic biota from an e-waste recycling region in South China

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

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