Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s10653-009-9260-7 |
Heavy metal distribution in soils near Palapye, Botswana: an evaluation of the environmental impact of coal mining and combustion on soils in a semi-arid region | |
Zhai, Mingzhe1; Totolo, Otlogetswe1; Modisi, Motsoptse P.1; Finkelman, Robert B.2; Kelesitse, Sebueng M.3; Menyatso, Mooketsi4 | |
通讯作者 | Zhai, Mingzhe |
来源期刊 | ENVIRONMENTAL GEOCHEMISTRY AND HEALTH |
ISSN | 0269-4042 |
出版年 | 2009 |
卷号 | 31期号:6页码:759-777 |
英文摘要 | Morupule Colliery near Palapye in eastern Botswana is the only coalmine in production in Botswana at present. Its coal is mainly used in the nearby coal-fired Morupule Power Station, which generates approximately 1,000 GWh of electricity per annum. After more than 30 years mining and more than 20 years of combustion, the sedimentation of outlet fly ash from the Morupule Power Station has increased concentrations of Cr, Ni, Zn and As by 13, 2.5, 16 and 5 ppm, respectively, in the fine portion (< 53 mu m) of surface soils for approximately 9 km downwind. Elements that have higher concentrations in coal have stronger small-particle association during coal combustion and are less mobile in surface soils, thus showing stronger contaminations in surface soils around the coal-fired plant. Although the degree of contamination of Cr, Ni, Zn and As from coal combustion in the Palapye area at present is low, it is necessary to monitor concentrations of these elements in surface soils routinely in the future. This study also reveals moderate Pb and Zn contaminations in the Palapye area. The former is due to the use of leaded petroleum in motor vehicle traffic and the latter is mainly due to the use of galvanized iron sheets in construction. |
英文关键词 | Coal environment Heavy metal Arsenic Soil environment Botswana |
类型 | Article |
语种 | 英语 |
国家 | Botswana ; USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000271949100014 |
WOS关键词 | HEALTH IMPACTS ; TRACE-ELEMENTS ; POWER-PLANT ; URBAN SOILS ; POLLUTION ; MINE ; CONTAMINATION ; EMISSIONS ; SEDIMENTS ; WASTE |
WOS类目 | Engineering, Environmental ; Environmental Sciences ; Public, Environmental & Occupational Health ; Water Resources |
WOS研究方向 | Engineering ; Environmental Sciences & Ecology ; Public, Environmental & Occupational Health ; Water Resources |
来源机构 | United States Geological Survey |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/160472 |
作者单位 | 1.Univ Botswana, Fac Sci, Gaborone 0022, Botswana; 2.US Geol Survey, Reston, VA 22092 USA; 3.Botswana Power Corp, Morupule Power Stn, Palapye, Botswana; 4.Morupule Colliery Ltd, Palapye, Botswana |
推荐引用方式 GB/T 7714 | Zhai, Mingzhe,Totolo, Otlogetswe,Modisi, Motsoptse P.,et al. Heavy metal distribution in soils near Palapye, Botswana: an evaluation of the environmental impact of coal mining and combustion on soils in a semi-arid region[J]. United States Geological Survey,2009,31(6):759-777. |
APA | Zhai, Mingzhe,Totolo, Otlogetswe,Modisi, Motsoptse P.,Finkelman, Robert B.,Kelesitse, Sebueng M.,&Menyatso, Mooketsi.(2009).Heavy metal distribution in soils near Palapye, Botswana: an evaluation of the environmental impact of coal mining and combustion on soils in a semi-arid region.ENVIRONMENTAL GEOCHEMISTRY AND HEALTH,31(6),759-777. |
MLA | Zhai, Mingzhe,et al."Heavy metal distribution in soils near Palapye, Botswana: an evaluation of the environmental impact of coal mining and combustion on soils in a semi-arid region".ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 31.6(2009):759-777. |
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