Preliminary studies on trace element contamination in dumping sites of municipal wastes in India and Vietnam

Agusa, Tetsuro; Kunito, Takashi; Nakashima, Etsuko; Minh, Tu Binh; Tanabe, Shinsuke; Subramanian, Annamalai; Viet, Pham Hung

doi:10.1051/jp4:20030233

Cited by 14 publications

(12 citation statements)

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“…Fish muscle and feed (15 g) were extracted by a Soxhlet apparatus and determined for lipid content as explained above. The aliquot (5 ml), before being subjected to gel permeation chromatography, was spiked with 5 ng of [ 13 C]brominated diphenyl ether (BDE) congeners (including BDEs 3,15,28,47,99,153,154,183,197,207, and 209 as surrogates). The gel permeation chromatographic fraction containing organohalogens was concentrated and passed through a column packed with 1.5 g of activated Wako-gel S-1 for cleanup and fractionation.…”

Section: Methodsmentioning

confidence: 99%

“…Recovery of 13 C-labeled BDEs ranged between 60 and 120%. Concentrations of major PBDE congeners, including BDEs 3,15,28,47,99,100,138,153,154,183,196,197,206,207, and 209, were summed to obtain the total concentration of PBDEs. The detection limit was calculated as threefold the procedural blank (0.02 ng/g for mono-to di-BDEs, 0.1 ng/g for tetra-BDE, 0.05 ng/g for tri-and penta-to hepta-BDEs, 0.06 ng/g for octa-to nona-BDEs, and 4 ng/g for deca-BDE).…”

Section: Methodsmentioning

confidence: 99%

“…collectionϭFBS&DomainϭFBS&ser vletϭ1&hasbulkϭ 0&versionϭext&languageϭEN) estimated that total fish consumption of the Vietnamese is approximately 50 g/person/d for all kinds of fish (more than threefold higher than during the early 1990s [33]). However, consumption of the dumpsite catfish may cause additional exposure to various other contaminant groups, such as heavy metals and dioxin-related compounds [15,16]. In general, the intake via dumpsite catfish consumption was one order of magnitude higher than that via the farmed catfish (Fig.…”

Section: Toxicological Risk Assessmentmentioning

confidence: 99%

“…In addition, household solid wastes and electronic appliances are abandoned in open dumping sites with very poor management. Several studies have suggested such discharges as potential sources of various anthropogenic pollutants, including OCs and PBDEs, to the environment [10,15,16]. Lack of proper waste management in many open dumping sites may redistribute such contaminants into the environment.…”

Section: Introductionmentioning

confidence: 99%

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Contamination by polybrominated diphenyl ethers and persistent organochlorines in catfish and feed from Mekong River Delta, Vietnam

Minh

Kajiwara

et al. 2006

Enviro Toxic and Chemistry

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Commercial feeds for aquaculture and catfish samples were collected from the Mekong River Delta, Vietnam, for determination of polybrominated diphenyl ethers (PBDEs) and selected persistent organochlorines, including polychlorinated biphenyls (PCBs), DDT and its metabolites (DDTs), chlordane-related compounds (CHLs), hexachlorocyclohexane isomers (HCHs), and hexachlorobenzene (HCB). The most abundant contaminants were DDTs, with concentrations ranging from 10 to 700 ng/g lipid weight, followed by PCBs (1.0-80 ng/g), CHLs (<0.01-8.2 ng/g), PBDEs (0.12-3.7 ng/g), HCHs (<0.03-5.1 ng/g), and HCB (<0.07-3.2 ng/g). Polybrominated diphenyl ethers were detected in all samples, suggesting their widespread contamination in the region. However, PBDE contamination levels in the present catfish specimens were low in comparison to levels worldwide. Interestingly, residue levels of all the contaminants were significantly higher in catfish collected near a municipal dumping site compared to farmed catfish. This suggests that runoffs from the dumping site during floods and rains may have brought pollutants to the surrounding areas. Contamination pattern in aquaculture feeds revealed elevated levels of PCBs and PBDEs in samples from foreign companies, perhaps implying their higher residues in some imported ingredients. Congener profiles of PBDEs and PCBs demonstrated similarity between the farmed catfish and the aquaculture feeds, suggesting these feeds as a major source of pollution to the farmed catfish. On the other hand, the PBDE and PCB profiles in the dumpsite catfish are clearly different from those of the farmed catfish, revealing their exposure to different sources. Risk assessment showed significantly higher intake of the contaminants by people who eat catfish cultured near the dumping areas. Further investigation regarding fate and occurrence of the contaminants in dumping sites is necessary.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Toxicological Risk Assessmentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Contamination by polybrominated diphenyl ethers and persistent organochlorines in catfish and feed from Mekong River Delta, Vietnam

Minh

Kajiwara

et al. 2006

Enviro Toxic and Chemistry

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“…These concerns probably have become more pragmatic when recent intensive studies demonstrated increased human health risk caused by exposure to toxic chemicals, such as dioxins and related compounds, and heavy metals in these dumping sites (Agusa et al, 2003;Minh et al, 2003). Landfills containing hazardous materials are under critical observation today for potential hazards, resulting in the need for thorough risk analyses along with the soil and groundwater that have been contaminated with chemicals leaching from landfills.…”

Section: Introductionmentioning

confidence: 99%

Soil contamination in landfills: a case study of a landfill in Czech Republic

et al. 2016

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Abstract.A phytotoxicity test was determined to assess ecotoxicity of landfill soil. Sinapis alba L. was used as a bioindicator of heavy metals. Soil samples 1-8, which were taken from the landfill body, edge of the landfill body, and its vicinity meet the limits for heavy metals Co, Cd, Pb, and Zn specified in the applicable legislation. Hg and Mn threshold values are not established in legislation, but values have been determined for the needs of the landfill operator. For heavy metals Cr, Cu, and Ni sample 2 exceeded the threshold values, which attained the highest values of all the samples tested for Cr, Cu, and Ni. For Cr and Ni the values were several times higher than values of the other samples. The second highest values for Cr, Cu, and Ni showed sample 6 and 7. Both samples exceeded the set limits. An increase in plant biomass was observed in plants growing on plates with soil samples, but no changes in appearance, slow growth, or necrotic lesions appeared. Ecotoxicity tests show that tested soils (concentration of 50 %) collected from the landfill body, edge of the landfill body, and its vicinity reach high percentage values of germination capacity of seeds of Sinapis alba L. (101-137 %). At a concentration of 25 %, tested soil samples exhibit lower values of germination capacity -in particular samples 3 to 8 -yet the seed germination capacity in all eight samples of tested soils ranges between 86 and 137 %.

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Organic Micropollutants in the Urban Soils: Technological Advances and Management Concerns

Kaur,

Singh

et al. 2024

Organic Micropollutants in Aquatic and Terrestrial Environments

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Preliminary studies on trace element contamination in dumping sites of municipal wastes in India and Vietnam

Cited by 14 publications

References 0 publications

Contamination by polybrominated diphenyl ethers and persistent organochlorines in catfish and feed from Mekong River Delta, Vietnam

Contamination by polybrominated diphenyl ethers and persistent organochlorines in catfish and feed from Mekong River Delta, Vietnam

Soil contamination in landfills: a case study of a landfill in Czech Republic

Organic Micropollutants in the Urban Soils: Technological Advances and Management Concerns

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