Impact of particle sizes on health risks and source-specific health risks for heavy metals in road dust

Men, Cong; Liu, Ruimin; Wang, Yifan; Cao, Leiping; Jiao, Lijun; Li, Lin; Wang, Yue

doi:10.1007/s11356-022-21060-w

Cited by 7 publications

(1 citation statement)

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“…The diffusion model and the receptor model are the main methods used for the quantitative analysis of HMs pollution sources [ 48 ]. Among them, the receptor model has been widely used because it does not depend on the emission conditions, topography, and meteorological data of the pollution sources compared to the diffusion model and the diffusion process of pollutants need not be tracked, thus avoiding the uncertainty of the input data of the diffusion model [ 49 , 50 , 51 , 52 ].…”

Section: Introductionmentioning

confidence: 99%

Heavy Metal Pollution and Risk Assessment of Surface Dust in the Arid NW China

Yang

Eziz

Hayrat

et al. 2022

IJERPH

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High concentrations of heavy metals (HMs) in urban surface dust (USD) can be extremely hazardous to urban ecology and human health. Oasis cities are located at the edge of deserts and are more exposed to salt/sandstorms, and they face a significantly higher accumulation of USD than wet or semi-humid areas. However, systematic studies on the pollution and risk assessment of HMs in USD in oasis cities have rarely been conducted. This study systematically analyzed the enrichment status, spatial distribution, pollution levels, health risks, and sources of HMs in USD in a typical oasis city (Changji city). The results showed that the average concentrations of Pb, Ni, As, Cd, Hg, and Cu in the USD of Changji city were 46.83, 26.35, 9.92, 0.21, 0.047, and 59.33 mg/kg, respectively, and the results of the pollution index evaluation showed moderate Pb, Hg, and Cu pollution, mild Cd pollution, and no Ni or As pollution. The spatial distribution of HM concentrations in the USD was substantially heterogeneous. High values of Pb, Hg, and Cu concentrations were mainly observed in areas with relatively intensive transportation and commercial activities, and high values of Cd and Ni were observed in industrial areas. The health risk assessment showed that HMs do not pose non-carcinogenic risks to humans at their current level, but they pose a carcinogenic risk to children, with As contributing the largest carcinogenic and non-carcinogenic risks. The source identification of HMs showed that the main pollution of HMs were traffic sources for Pb and Cu, industrial sources for Ni and Cd, natural sources for As, and coal-fired sources for Hg. According to the results of the quantitative analysis with the positive matrix factorization, the contribution of pollution sources followed this order: industrial sources (31.08%) > traffic sources (26.80%) > coal-fired sources (23.31%) > natural sources (18.81%).

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