Arid
DOI10.1007/s12665-010-0555-x
Geochemical reconnaissance survey and environmental assessment for stream sediments of Wadi Um Gier, Southeastern Desert, Egypt
Darwish, Mohamed Abdallah Gad
通讯作者Darwish, Mohamed Abdallah Gad
来源期刊ENVIRONMENTAL EARTH SCIENCES
ISSN1866-6280
出版年2011
卷号62期号:3页码:657-672
英文摘要

The purposes of this study were to assess the influence of old mining activities on the geochemistry and quality of sediments and to identify the sites of economic elements. Thirty sites of stream sediment were sampled in the study area covered by granitic, metarhyodacitic and meta-andesitic rocks and related tuffs-hosted abandoned Au mine. The suite of chemical elements, Ag, Bi, Cd, Cu, Fe, Ga, Hg, Mn, Nb, Pb, Rb, Sb, Se, Sn, Te, Th, U, Y, Zn and Zr, pH value and total organic carbon were determined, and univariate, bivariate and multivariate statistical methods were applied. The results show that the enrichment factor (EF) is very high in the case of Te and significant also with respect to Ag, Bi, Cu, Sb, Se, Sn and Zn. Likewise, geoaccumulation indices (Igeos) varied from very highly polluted with Sn and Te, strongly to very strongly polluted with Bi and Se, and moderately polluted with Sb. The polluted sites of Ag, Bi, Sb, Se, Sn and Te were outlined using Igeos maps, and economic sites of Ag and Sn were identified by geochemical maps leading to their sources, which are likely to be mining activities and lithogenic processes. The pollutant elements may cause toxicity in stream sediments, or surface or underground water, as well as plants and animals in the area. This investigation provides an environmental baseline for future monitoring of possible human/anthropogenic, industrial and agricultural impacts on the study area and considers an attempt at re-mining Ag and Sn.


英文关键词Stream sediments Geochemical survey Environmental assessment Um Gier Egypt
类型Article
语种英语
国家Egypt
收录类别SCI-E
WOS记录号WOS:000286193200017
WOS关键词HEAVY-METAL CONTAMINATION ; EXPLORATION GEOCHEMISTRY ; MARINE ENVIRONMENTS ; PROBABILITY PLOTS ; TRACE-METALS ; LANDSAT TM ; ELEMENTS ; SOILS ; CHINA ; JAPAN
WOS类目Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向Environmental Sciences & Ecology ; Geology ; Water Resources
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/167922
作者单位(1)S Valley Univ, Dept Geol, Aswan Fac Sci, Aswan 81528, Egypt
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Darwish, Mohamed Abdallah Gad. Geochemical reconnaissance survey and environmental assessment for stream sediments of Wadi Um Gier, Southeastern Desert, Egypt[J],2011,62(3):657-672.
APA Darwish, Mohamed Abdallah Gad.(2011).Geochemical reconnaissance survey and environmental assessment for stream sediments of Wadi Um Gier, Southeastern Desert, Egypt.ENVIRONMENTAL EARTH SCIENCES,62(3),657-672.
MLA Darwish, Mohamed Abdallah Gad."Geochemical reconnaissance survey and environmental assessment for stream sediments of Wadi Um Gier, Southeastern Desert, Egypt".ENVIRONMENTAL EARTH SCIENCES 62.3(2011):657-672.
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