Heavy metal contamination characteristic of soil in WEEE (waste electrical and electronic equipment) dismantling community: a case study of Bangkok, Thailand
| Autor: | Seelawut Damrongsiri, Sujitra Vassanadumrongdee, Puntita Tanwattana |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Pollution
Soil test Health Toxicology and Mutagenesis media_common.quotation_subject 0211 other engineering and technologies chemistry.chemical_element Industrial Waste Scrap 02 engineering and technology Zinc 010501 environmental sciences complex mixtures 01 natural sciences Industrial waste Metals Heavy Environmental Chemistry Soil Pollutants 0105 earth and related environmental sciences media_common 021110 strategic defence & security studies Environmental engineering General Medicine Contamination Thailand Refuse Disposal Deposition (aerosol physics) chemistry Environmental chemistry Environmental science Electronics |
| Zdroj: | Environmental science and pollution research international. 23(17) |
| ISSN: | 1614-7499 |
| Popis: | Sue Yai Utit is an old community located in Bangkok, Thailand which dismantles waste electrical and electronic equipment (WEEE). The surface soil samples at the dismantling site were contaminated with copper (Cu), lead (Pb), zinc (Zn), and nickel (Ni) higher than Dutch Standards, especially around the WEEE dumps. Residual fractions of Cu, Pb, Zn, and Ni in coarse soil particles were greater than in finer soil. However, those metals bonded to Fe-Mn oxides were considerably greater in fine soil particles. The distribution of Zn in the mobile fraction and a higher concentration in finer soil particles indicated its readily leachable character. The concentration of Cu, Pb, and Ni in both fine and coarse soil particles was mostly not significantly different. The fractionation of heavy metals at this dismantling site was comparable to the background. The contamination characteristics differed from pollution by other sources, which generally demonstrated the magnification of the non-residual fraction. A distribution pathway was proposed whereby contamination began by the deposition of WEEE scrap directly onto the soil surface as a source of heavy metal. This then accumulated, corroded, and was released via natural processes, becoming redistributed among the soil material. Therefore, the concentrations of both the residual and non-residual fractions of heavy metals in WEEE-contaminated soil increased. |
| Databáze: | OpenAIRE |
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