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Moyo S Mujuru M McCrindle RI Mokgalaka-Matlala N 《Journal of environmental monitoring : JEM》2011,13(5):1488-1494
Samples of coal were collected from different seams at a South African coal mine and comparative leaching experiments were carried out under various pH conditions and times to investigate the leaching behavior and potential environmental impact of possibly hazardous elements such as As, Cd, Co, Cr, Mn, Ni, Pb, Th and U. The calculated leaching intensities, sequential extraction results and cumulative percentages demonstrate that the leaching behavior of the elements is strongly influenced by the pH, the leaching time and the properties and occurrences of the elements. The leached concentrations of As, Cd, Co, Cr, Mn, Ni and Pb exceeded the maximum concentrations recommended by the Environmental Protection Agency (EPA) for surface water. 相似文献
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Panichev Nikolai Mokgalaka Ntebogeng Panicheva Svetlana 《Environmental geochemistry and health》2019,41(5):2239-2250
Environmental Geochemistry and Health - Large-scale assessment of atmospheric air pollution by mercury (Hg) using lichen Parmelia caperata as biological indicator was undertaken using samples from... 相似文献
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