Abstract
To identify the best material (soil or dust) to be selected for health-risk assessment studies, road dust and urban soil from three cities with different population densities were collected, and size fractions were analysed for metal content (Pb, Zn, Cu, Cd, Cr, Co, and Ni). Results showed similar distribution of the size particles among cities, predominating fractions between 75 and 2000 μm in road dust and particles below 75 μm in soil. Metals were mainly bound to PM10 in both soil and road dust increasing the risk of adverse health effects, overall through inhalation exposure. The risk assessment showed that the most hazardous exposure pathway was the ingestion via, followed by dermal absorption and inhalation route. Values of hazard quotient showed that the risk for children due to the ingestion and dermal absorption was higher than adults, and slightly larger at PM10 comparing to <75-μm fraction for the inhalation route. Higher risk values were found for road dust, although any hazard index or cancer risk index value did not overreach the safe value of 10−6.
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Financial support to conduct this study was provided by the Fundación Séneca of Comunidad Autónoma de Murcia (Spain).
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Gabarrón, M., Faz, A. & Acosta, J.A. Soil or Dust for Health Risk Assessment Studies in Urban Environment. Arch Environ Contam Toxicol 73, 442–455 (2017). https://doi.org/10.1007/s00244-017-0413-x
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DOI: https://doi.org/10.1007/s00244-017-0413-x