Distribution and sources of mercury in soils from former industrialized urban areas of Beijing, China

State Key Lab of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.
Environmental Monitoring and Assessment (Impact Factor: 1.68). 11/2008; 158(1-4):507-17. DOI: 10.1007/s10661-008-0600-3
Source: PubMed


Fifty-seven typical surface soils and 108 deeper soils were collected from five former industrial sites in Beijing and concentrations of total Hg (SigmaHg) as well as pH, total carbon (TC), total nitrogen (TN), total sulfur, and dissolved organic carbon concentrations determined. The mean concentration of SigmaHg in surface soils was significantly greater than background concentrations in the vicinity of Beijing. Forty-eight percent of the samples exceeded the "critical" concentration of 1.0 mg Hg/kg, dry weight in soils, which has been established by the Chinese government. At depths of 0-80 cm in the soil, profile concentrations of SigmaHg also exceeded the background value. There were significant correlations between concentrations of SigmaHg, TC, and TN in the industrial soils. The greater concentration of SigmaHg in most soils could have been due in part to combustion of coal and leakage from industrial processes.

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    • "Boszke et al. [5] classified the divalent and elemental Hg bounds to humic matter/organic matter as the " semimobile " element portion and observed low portions of the water-soluble Hg species as well. Luo et al. [6] suggested that soil organic matter and nitrogen were the important sinks for Hg in the soils. The good capacity of Hg for adsorption and complexation in the solid media resulted in limited bioaccessibility of this element, which was reported by Hassen et al. [7]. "
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    10/2014; 2014:407049. DOI:10.1155/2014/407049
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    • "It is increasingly being recognized that most of the soil in peri-urban areas with a high level of industrial development is contaminated with potentially toxic metals, which poses serious threat to the urban population (e.g. Binns et al. 2003; Loredo et al. 2003; Luo et al. 2008). There is growing concern about soil pollution in the rapidly expanding industry-based peri-urban interface. "
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