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Fine road dust contamination in a mining area presents a likely air pollution hotspot and threat to human health
Tian, Shuhan; Liang, Tao; Li, Kexin
2019-07-01
Source PublicationENVIRONMENT INTERNATIONAL
ISSN0160-4120
Volume128Pages:201-209
Corresponding AuthorLiang, Tao(liangt@igsnrr.ac.cn)
AbstractThe road dust found in mining areas is composed of dust from multiple sources, including wind transported mineral dust from mines and tailings as well as uncovered trucks leakage. Collectively, these are then distributed via wind and traffic activity, becoming an important source of particulate matter (PM) and subsequently inhaled by pedestrians. A common practice in previous road dust risk assessments has regarded them as soil, which likely led to a significant underestimation of the actual inhaled amount. To more accurately understand the inhalation risk presented by road dust in mining areas, the study applied a detailed pollution analysis and dust dispersion model to assess the inhaled amount of road dust. Road dust samples located at different distances to the mine and tailings were collected and sieved to 10 mu m (RD10). Enrichment factors (EFs) of Ce, As, Cd, and Mo exceeded 20 across most sampled sites, suggesting extreme pollution. Source analysis indicated that most of the collected RD10 had greater than half of its mass originating from the mine. To assess the risk presented by inhalation exposure to local populations, we built a method using Gaussian diffusion model and two exposure scenarios for both adults and children were considered. The level of simulated particle concentrations was comparable to that described in the literature; the inhalation of potential toxic elements (PTEs) in RD10 led to health risks for both adults and children (adult and child HI > 1, with adults CR in industrial areas > 10(-4)). Results also indicated that a ten-fold reduction of silt load resulted in a > 4-fold decrease in risk. Collectively, the results suggest that fine road dust is a potential hotspot for mineral exposure in populations living around a mine and its tailings; moreover, that effective prevention measures like road cleaning and truck regulation are urgently needed.
KeywordRoad dust Rare earth elements Mining contamination Health risk
DOI10.1016/j.envint.2019.04.050
WOS KeywordRARE-EARTH-ELEMENTS ; POTENTIALLY TOXIC ELEMENTS ; HEAVY-METALS ; PARTICULATE MATTER ; RISK-ASSESSMENT ; SOURCE APPORTIONMENT ; DEPOSITED SEDIMENTS ; URBAN-ENVIRONMENT ; TRACE-METALS ; STREET DUST
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41571473] ; National Natural Science Foundation of China[41401591]
Funding OrganizationNational Natural Science Foundation of China
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000467938500023
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/59620
Collection中国科学院地理科学与资源研究所
Corresponding AuthorLiang, Tao
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Beijing 10049, Peoples R China
Recommended Citation
GB/T 7714
Tian, Shuhan,Liang, Tao,Li, Kexin. Fine road dust contamination in a mining area presents a likely air pollution hotspot and threat to human health[J]. ENVIRONMENT INTERNATIONAL,2019,128:201-209.
APA Tian, Shuhan,Liang, Tao,&Li, Kexin.(2019).Fine road dust contamination in a mining area presents a likely air pollution hotspot and threat to human health.ENVIRONMENT INTERNATIONAL,128,201-209.
MLA Tian, Shuhan,et al."Fine road dust contamination in a mining area presents a likely air pollution hotspot and threat to human health".ENVIRONMENT INTERNATIONAL 128(2019):201-209.
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