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	Multivariate and spatial analysis of heavy metal sources and variations in a large old antimony mine, China
	Fu S. ; Wei C. Y.
	2013
关键词	Geostatistics GIS Heavy metals Multivariate analysis Wind effect agricultural soils hunan province pollution contamination area tailings mobility mercury plants spain
英文摘要	Contaminations by multiple heavy metals in antimony (Sb) mines produce serious environmental and health problems; however, the spatial variations in various heavy metals relative to the sources and transportation of Sb have rarely been documented. To resolve this problem, we conducted a survey in an old Sb mine in Xikuangshan (XKS), China, to investigate the similarities and differences among the sources and diffusion characteristics of the heavy metals that were present as well as the factors influencing these patterns. A total of 71 surface soil samples were collected in the central study area, which has a history of intensive mining and smelting activities, as well as in surrounding areas at different distances from the central mine and with different coverage/landscape/land use characteristics; we refer to these areas as the central mining subarea, tailing subarea in the southwest, forestry subarea in the southeast, grass subarea at the northern edge of the study area and vegetation subarea at the southern edge. Multivariate and spatial analyses were performed to explore the correlations and patterns of variation of various heavy metals. Hg and Cd were evidently elevated in XKS, whereas the concentrations of As, Pb and Zn were moderate and that of Cr was comparable to the background values. Moderate correlations were found for Sb-As and Hg-Cd, and strong correlations were observed for Pb, Zn, Cd and Cr. The southeast direction was associated with the strongest spatial autocorrelation for Sb, which is consistent with the prevailing wind direction in XKS; the optimal directions for Zn and Cd were similar and indicated the transfer of Zn and Cd contamination from subareas with high levels to those with low levels, significantly affecting the spatial distribution of these metals in XKS. Our results highlight the importance of the effect of wind on the diffusion of Sb in XKS. The co-contamination of Hg and Cd with Sb is widespread in XKS due to the presence of Hg and Cd in Sb-containing ores.
出处	Journal of Soils and Sediments
卷	13
期	1
页	106-116
收录类别	SCI
语种	英语
ISSN号	1439-0108
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/30561]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Fu S.,Wei C. Y.. Multivariate and spatial analysis of heavy metal sources and variations in a large old antimony mine, China. 2013.

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