Reviews on Soil Pollution, Risks, Sources and Phytoremediation Involving Metals Contaminants pp. 223-262
Authors: (Yan-Ju Liu, Qing-Jun Liu, Hui Ding, Department of Environmental Pollution Analysis and Control, Beijing Center for Physical and Chemical Analysis, P.R. China, and others)
Abstract: Soil is the vital medium in the natural environment. Its pollution has grown into a global issue. Metals contamination is one of the heaviest environmental problems in soil. This paper will review the status of soil contamination, its risks and sources in the beginning. Human activities broke the soil balance with low background toxic metal level, and shrank the area of agricultural soil globally. Both essential and unessential metals ruin the balance of the ecosystem, with increasing economic loss and human health damage. Soil pollution was caused not only by naturally generated mechanisms including earthquakes, volcanic eruption, but also by anthropogenic inputs such as industrial development, fossil fuel burning, mining, metallurgy, electroplating, waste disposal, long-term application of sewage sludge, fertilizer application, etc.
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