干旱区生态环境知识资源中心(Arid): Oral bioaccessibility of metal(loid)s in dust materials from mining areas of northern Namibia

Arid

DOI	10.1016/j.envint.2018.12.027
	Oral bioaccessibility of metal(loid)s in dust materials from mining areas of northern Namibia
	Ettler, Vojtech 1; Cihlova, Marketa 1; Jarosikova, Alice 1; Mihaljevic, Martin 1; Drahota, Petr 1; Kribek, Bohdan 2; Vanek, Aleg 3; Penaizek, Vit 3; Sracek, Ondra 4; Klementova, Mariana 5; Engel, Zbynek 6; Kamona, Fred 7; Mapani, Ben 7
通讯作者	Ettler, Vojtech
来源期刊	ENVIRONMENT INTERNATIONAL
ISSN	0160-4120
EISSN	1873-6750
出版年	2019
卷号	124 页码:205-215
英文摘要	Ore mining and processing in semi-arid areas is responsible for the generation of metal(loid)-containing dust, which is easily transported by wind to the surrounding environment. To assess the human exposure to dust-derived metal(loid)s (As, Cd, Cu, Pb, Sb, Zn), as well as the potential risks related to incidental dust ingestion, we studied mine tailing dust (n = 8), slag dust (n = 5) and smelter dust (n = 4) from old mining and smelting sites in northern Namibia (Kombat, Berg Aukas, Tsumeb). In vitro bioaccessibility testing using extraction in simulated gastric fluid (SGF) was combined with determination of grain-size distributions, chemical and mineralogical characterizations and leaching tests conducted on original dust samples and separated PM10 fractions. The bulk and bioaccessible concentrations of the metal(loid) s were ranked as follows: mine tailing dusts < slag dusts << smelter dusts. Extremely high As and Pb bioaccessibilities in the smelter dusts were caused by the presence of highly soluble phases such as arsenolite (As2O3) and various metal-arsenates unstable under the acidic conditions of SGF. The exposure estimates calculated for an adult person of 70 kg at a dust ingestion rate of 50 mg/day indicated that As, Pb (and also Cd to a lesser extent) grossly exceeded tolerable daily intake limits for these contaminants in the case of slag and smelter dusts. The high risk for smelter dusts has been acknowledged, and the safety measures currently adopted by the smelter operator in Tsumeb are necessary to reduce the staff's exposure to contaminated dust. The exposure risk for the local population is only important at the unfenced disposal sites at Berg Aukas, where the PM10 exhibited high levels of bioaccessible Pb.
英文关键词	Dust mineralogy Bioacessibility Metal(loid)s Namibia Mining Smelting
类型	Article
语种	英语
国家	Czech Republic ; Namibia
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000457122700021
WOS关键词	POTENTIALLY TOXIC ELEMENTS ; LEAD-ZINC MINE ; HUMAN EXPOSURE ; ENVIRONMENTAL STABILITY ; TSUMEB SMELTER ; BERG AUKAS ; MINERALOGY ; BIOAVAILABILITY ; COPPER ; INHALATION
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/2XILL650/215380
作者单位	1.Charles Univ Prague, Fac Sci, Inst Geochem Mineral & Mineral Resources, Albertov 6, Prague 12843 2, Czech Republic; 2.Czech Geol Survey, Geol 6, Prague 15200 5, Czech Republic; 3.Czech Univ Life Sci Prague, Fac Agrobiol Food & Nat Resources, Dept Soil Sci & Soil Protect, Kamycka 129, Prague 16521 6, Czech Republic; 4.Palacky Univ Olomouc, Fac Sci, Dept Geol, 17 Listopadu 12, Olomouc 77146, Czech Republic; 5.Czech Acad Sci, Inst Inorgan Chem, Husinec Rez 1001, Rez 25068, Czech Republic; 6.Charles Univ Prague, Fac Sci, Dept Phys Geog & Geoecol, Albertov 6, Prague 12843 2, Czech Republic; 7.Univ Namibia, Fac Sci, Dept Geol, Private Bag 13301, Windhoek, Namibia
推荐引用方式 GB/T 7714	Ettler, Vojtech,Cihlova, Marketa,Jarosikova, Alice,et al. Oral bioaccessibility of metal(loid)s in dust materials from mining areas of northern Namibia[J],2019,124:205-215.
APA	Ettler, Vojtech.,Cihlova, Marketa.,Jarosikova, Alice.,Mihaljevic, Martin.,Drahota, Petr.,...&Mapani, Ben.(2019).Oral bioaccessibility of metal(loid)s in dust materials from mining areas of northern Namibia.ENVIRONMENT INTERNATIONAL,124,205-215.
MLA	Ettler, Vojtech,et al."Oral bioaccessibility of metal(loid)s in dust materials from mining areas of northern Namibia".ENVIRONMENT INTERNATIONAL 124(2019):205-215.