IMR Press / FBL / Volume 26 / Issue 2 / DOI: 10.2741/4896

Frontiers in Bioscience-Landmark (FBL) is published by IMR Press from Volume 26 Issue 5 (2021). Previous articles were published by another publisher on a subscription basis, and they are hosted by IMR Press on imrpress.com as a courtesy and upon agreement with Frontiers in Bioscience.

Open Access Review
Health risk of heavy metals in street dust
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1 Posgrado en Ciencias Biologicas, Universidad Nacional Autonoma de Mexico, Morelia, Michoacan, Mexico
2 Laboratorio Universitario de Geofisica Ambiental, Centro de Investigaciones en Geografia Ambiental, Universidad Nacional Autonoma de Mexico, Morelia, Michoacan, Mexico
3 Laboratorio Universitario de Geofisica Ambiental, Instituto de Geofisica Unidad Michoacan, Universidad Nacional Autonoma de Mexico, Morelia, Michoacan, Mexico
4 Instituto de Investigaciones en Ecosistemas y Sustentabilidad, Universidad Nacional Autonoma de Mexico, Morelia, Michoacan Mexico
Front. Biosci. (Landmark Ed) 2021, 26(2), 327–345; https://doi.org/10.2741/4896
Published: 1 October 2020
(This article belongs to the Special Issue Enviromental medicine and its impact on human health)
Abstract

Heavy metals in street dust represent a risk to the human health due to their toxicity, persistence and bioaccumulation. Using the US Environmental Protection Agency (USEPA) assessment, here, we review the human health risks of such dust world-wide. The street dust in such cities is contaminated by As, Cd, Cr, Cu, Hg, Mn Ni, Pb and Zn beyond the median levels of the world soil background values. Among these elements, the median values of the hazard risk indices (non-carcinogenic risk) are highest for As, Cr and Pb and the median values of the risk indices (carcinogenic risk) for As are in the tolerable risk range for children and adults and in the case of Pb, the median value of the carcinogenic risk indices are also in the tolerable range for children. We emphasize that the level of heavy metals in street dust pose a considerable risk to the human health and require monitoring and approaches to reduce such toxic levels.

Keywords
Heavy metals
Sampling
Sources
Street dust
Risk assessment
Review
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