干旱区生态环境知识资源中心(Arid): Environmental and human health risk assessment of potentially toxic elements in soil, sediments, and ore-processing wastes from a mining area of southwestern Tunisia

Arid

DOI	10.1007/s10653-019-00434-z
	Environmental and human health risk assessment of potentially toxic elements in soil, sediments, and ore-processing wastes from a mining area of southwestern Tunisia
	Khelifi, Faten; Melki, Achraf; Hamed, Younes; Adamo, Paola; Caporale, Antonio G.
通讯作者	Caporale, AG (corresponding author), Univ Naples Federico II, Dept Agr Sci, Portici, Italy.
来源期刊	ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
ISSN	0269-4042
EISSN	1573-2983
出版年	2020
卷号	42 期号:12 页码:4125-4139
英文摘要	The occurrence and bioaccessibility of potentially toxic elements (PTEs) in soils and sediments are investigated by many studies, especially in territories exploited by mining and ore-processing activities, nearby agriculture-driven rural cities. Accordingly, the present study aimed at evaluating the geochemical properties, potential bioavailability, and risks for environment and human health of the most concerning PTEs of study area (Gafsa mining basin, Tunisia) such as Cd, Cr, and Zn in selected soil, sediment, and mining waste samples. The extraction of these solid matrixes by modified EU-BCR sequential extraction revealed that the most easily extractable fractions of each PTE were very low (first 2 steps, < 10%), Cd was mainly associated with the oxidizable phase (likely organic matter), and Cr and Zn were mostly found in residual mineral fraction (likely occluded in non-siliceous mineral phase). The total cumulative concentration of each metal was found to be higher in soil/sediment profiles and ore-processing wastes than in phosphate rocks, indicating a metal enrichment due to mining activities. Theaqua regiaextraction of representative sediment samples revealed that Cd, Cr, and Zn concentrations were higher than non-polluted sediment standards. In contrast, other elements as Cu, Mn, and Pb essentially arose from natural bedrocks. The Unified BARGE method was applied to assess the risk of ingestion by human beings and wild/domestic animals of contaminated sediment particulate prone to wind erosion and air dispersion in the arid conditions of study area. An higher oral bioaccessibility was found for Cd than Zn and Cr, most concerning in acid gastric phase than in sub-neutral intestinal environment.
英文关键词	Heavy metals Gafsa mining basin Bioavailability EU-BCR sequential extraction Bioaccessibility Unified BARGE Method (UBM)
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000541619500001
WOS关键词	SEQUENTIAL EXTRACTION PROCEDURE ; HEAVY-METALS ; CONTAMINATED SOILS ; SOLID SPECIATION ; TRACE-ELEMENTS ; VOLCANIC SOILS ; MINE WASTES ; BIOACCESSIBILITY ; RIVER ; BIOAVAILABILITY
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
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/369268
作者单位	[Khelifi, Faten] Univ Carthage, Dept Earth Sci, Fac Sci Bizerte, Jarzouna 7021, Bizerte, Tunisia; [Khelifi, Faten; Hamed, Younes] Univ Gabes, Fac Sci Gabes, Res Unity Geosyst Georesources & Geoenvironm 3G, Zrig 6072, Gabes, Tunisia; [Khelifi, Faten; Hamed, Younes] Int Assoc Water Resources Southern Mediterranean, Gafsa, Tunisia; [Melki, Achraf] Univ Sfax, Res Lab GEOMODEL, Sfax, Tunisia; [Hamed, Younes] Univ Gafsa, Fac Sci Gafsa, Dept Earth Sci, Gafsa, Tunisia; [Adamo, Paola] Univ Naples Federico II, Interdept Res Ctr Earth Crit Zone Supporting Land, Portici, Italy; [Adamo, Paola; Caporale, Antonio G.] Univ Naples Federico II, Dept Agr Sci, Portici, Italy
推荐引用方式 GB/T 7714	Khelifi, Faten,Melki, Achraf,Hamed, Younes,et al. Environmental and human health risk assessment of potentially toxic elements in soil, sediments, and ore-processing wastes from a mining area of southwestern Tunisia[J],2020,42(12):4125-4139.
APA	Khelifi, Faten,Melki, Achraf,Hamed, Younes,Adamo, Paola,&Caporale, Antonio G..(2020).Environmental and human health risk assessment of potentially toxic elements in soil, sediments, and ore-processing wastes from a mining area of southwestern Tunisia.ENVIRONMENTAL GEOCHEMISTRY AND HEALTH,42(12),4125-4139.
MLA	Khelifi, Faten,et al."Environmental and human health risk assessment of potentially toxic elements in soil, sediments, and ore-processing wastes from a mining area of southwestern Tunisia".ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 42.12(2020):4125-4139.