干旱区生态环境知识资源中心(Arid): Assessment of water resources pollution associated with mining activity in a semi-arid region

Arid

DOI	10.1016/j.jenvman.2020.111148
	Assessment of water resources pollution associated with mining activity in a semi-arid region
	Santana, Caroline S.; Montalvan Olivares, Diango M.; Silva, Vinnicius H. C.; Luzardo, Francisco H. M.; Velasco, Fermin G.; de Jesus, Raildo M.
通讯作者	Santana, CS
来源期刊	JOURNAL OF ENVIRONMENTAL MANAGEMENT
ISSN	0301-4797
EISSN	1095-8630
出版年	2020
卷号	273
英文摘要	Mining, although relevant and indispensable for human socioeconomic development, is considered one of the most polluting anthropogenic activities. Water resources are the most vulnerable environmental compartment to the direct impacts of mining, especially in the semi-arid regions. In these regions, mining activity constitutes an important challenge in the management of water resources; since its impacts can be maximized by the adverse meteorological conditions. This study aimed to assess the level of contamination in water resources of three important mining areas in a semi-arid region, where approximately 70,000 people live. The concentrations of eleven heavy metals in sediment, surface and groundwater samples were determined by ICP OES. The results obtained for water samples indicated significant contamination by Cd, Pb, and U, based on the limits established by Brazilian and international regulatory legislation. In the case of sediment samples, higher concentrations of Cr, Cu, Ni, and V were observed. Pollution indices (PLI, CF and I-geo) revealed moderate to extreme contamination mainly along the Jacare and Contas rivers. The Pearson correlation, Principal Component, and Hierarchical Cluster analyses were performed to identify patterns in the distribution of elements and common sources of pollution. The results suggested that the concentrations of Co, Cr, Cu, Fe, Mn, Ni, and V were mainly related to mining activities and, to a lesser extent, natural sources. In the case of Cd and Pb, contamination may have an important contribution from fertilizers use, whereas Zn has a mixed source of both lithogenic and anthropogenic origin. On the other hand, the high concentrations of U, specifically in groundwater samples, were associated with geogenic causes. Although the potential ecological risk values indicated a low ecological risk; other sediment quality indices (TEL, PEL, Sigma TU, and PEL-Q) revealed that there is 25% of the probability that the content of heavy metals in water resources near the mining areas induces adverse toxic effects on aquatic organisms.
英文关键词	Heavy metals ICP OES Pollution indices Ecological risk
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000571860500004
WOS关键词	HEAVY-METAL POLLUTION ; RISK-ASSESSMENT ; SPATIAL-DISTRIBUTION ; ELEMENTS CONTAMINATION ; ENVIRONMENTAL-IMPACT ; SURFACE SEDIMENTS ; ABANDONED MINE ; LAKE ; RIVER ; VANADIUM
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326441
作者单位	[Santana, Caroline S.; Montalvan Olivares, Diango M.; Silva, Vinnicius H. C.; Luzardo, Francisco H. M.; Velasco, Fermin G.; de Jesus, Raildo M.] Univ Estadual Santa Cruz, Dept Exact & Technol Sci, Jorge Amado Highway, Ilheus, BA, Brazil
推荐引用方式 GB/T 7714	Santana, Caroline S.,Montalvan Olivares, Diango M.,Silva, Vinnicius H. C.,et al. Assessment of water resources pollution associated with mining activity in a semi-arid region[J],2020,273.
APA	Santana, Caroline S.,Montalvan Olivares, Diango M.,Silva, Vinnicius H. C.,Luzardo, Francisco H. M.,Velasco, Fermin G.,&de Jesus, Raildo M..(2020).Assessment of water resources pollution associated with mining activity in a semi-arid region.JOURNAL OF ENVIRONMENTAL MANAGEMENT,273.
MLA	Santana, Caroline S.,et al."Assessment of water resources pollution associated with mining activity in a semi-arid region".JOURNAL OF ENVIRONMENTAL MANAGEMENT 273(2020).