Geochemical, Mineralogical and Morphological Characterisation of Road Dust and Associated Health Risks
Year: 2020
Type: article
Abstract: Road dust resuspension, especially the particulate matter fraction below 10 µm (PM10), is one of the main air quality management challenges in Europe. Road dust samples were collected from representative streets (suburban and urban) of the city of Viana do Castelo, Portugal. PM10 emission factors (mg veh−1 km−1) ranging from 49 (asphalt) to 330 (cobble stone) were estimated by means of the United Stated Environmental Protection Agency method. Two road dust fractions (<0.074 mm and from 0.0074 to 1 mm) were characterised for their geochemical, mineralogical and morphological properties. In urban streets, road dusts reveal the contribution from traffic emissions, with higher concentrations of, for example, Cu, Zn and Pb. In the suburban area, agriculture practices likely contributed to As concentrations of 180 mg kg−1 in the finest road dust fraction. Samples are primarily composed of quartz, but also of muscovite, albite, kaolinite, microcline, Fe-enstatite, graphite and amorphous content. Particle morphology clearly shows the link with natural and traffic related materials, with well-formed minerals and irregular aggregates. The hazard quotient suggests a probability to induce non-carcinogenic adverse health effects in children by ingestion of Zr. Arsenic in the suburban street represents a human health risk of 1.58 × 10−4.
Language: English
Topic: Heavy metals in environment
Subfield: Pollution
Field: Environmental Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,429
Awards: G136265495, G1516346500, G1594741846, G1763632427, G1841445896, G2219685250, Chemical fingerprinting and toxicity of particulate matter from indoor sources, G2673245850, G2734793695, G3180215090, G3215331688, G3226779992, G3286926264, G3310187950, G3840324753, G4053505661, G4786942860, G5224927334, Centro de Estudos do Ambiente e do Mar, GeoBioCiências, GeoTecnologias e GeoEngenharias, G6193589897, GeoBioCiências, GeoTecnologias e GeoEngenharias, G7441985484, G745763725, G8088755495
OpenAlex ID: W3007334213