Heavy metal and persistent organic compound contamination in soil from Wenling: An emerging e-waste recycling city in Taizhou area, China

• Published in: Journal of hazardous materials Vol. 173; no. 1; pp. 653 - 660
• Main Authors: Tang, Xianjin, Shen, Chaofeng, Shi, Dezhi, Cheema, Sardar A., Khan, Muhammad I., Zhang, Congkai, Chen, Yingxu
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier B.V 15.01.2010; Elsevier
• Subjects: Applied sciences; China; Conservation of Natural Resources; Contamination; Decontamination. Miscellaneous; E-waste; Electronics; Exact sciences and technology; Global environmental pollution; Heavy metals; Households; Hydrogen-Ion Concentration; Industrial Waste - analysis; Metals, Heavy - analysis; Organic Chemicals - analysis; Organic compounds; PAHs; PCBs; Pollution; Polyallylamine hydrochloride; Polychlorinated Biphenyls - analysis; Polycyclic Aromatic Hydrocarbons - analysis; Quality Control; Recycling; Soil; Soil (material); Soil - analysis; Soil and sediments pollution; Soil Pollutants - analysis; Workshops; China, People's Rep; E-waste; Soil; PCBs; PAHs; Heavy metals; Hydrocarbon; Pollutant behavior; Polychlorobiphenyls; Soil quality; Urban area; Electronic scrap; Polycyclic aromatic compound; Soil pollution; Contamination; Heavy metal; Persistent organic pollutant; Persistence; Lead; Recycling; Organic compounds; Environmental protection
• ISSN: 0304-3894; 1873-3336
• DOI: 10.1016/j.jhazmat.2009.08.134

The present study was conducted to investigate the levels and sources of heavy metals (Cu, Cr, Cd, Pb, Zn, Hg and As) and persistent organic compounds including polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs) in soils taken from Wenling, an emerging e-waste recycling city in Taizhou, China. The results suggested that most heavy metals exceeded the respective Grade II value of soil quality standards from State Environmental Protection Administration of China and also exceeded the Dutch optimum values. Total PAHs in soil ranged from 371.8 to 1231.2 μg/kg, and relatively higher PAHs concentrations were found in soils taken from simple household workshops. PCBs were detectable in all samples with total concentrations ranging from 52.0 to 5789.5 μg/kg, which were 2.1–232.5 times higher than that from the reference site (24.9 μg/kg). Results of this study suggested soil in the Wenling e-waste recycling area were heavily contaminated by heavy metals, PAHs and PCBs. Furthermore, compared with large-scale plants, simple household workshops contributed more heavy metals, PAHs and PCBs pollution to the soil environment, indicating that soil contamination from e-waste recycling in simple household workshops should be given more attention.