caa a22 4500 606200150 CHVBK 20210128100942.0 cr unu---uuuuu 210128e20150801xx s 000 0 eng 10.1007/s10653-015-9713-0 doi (NATIONALLICENCE)springer-10.1007/s10653-015-9713-0 Assessment of the influence of traffic-related particles in urban dust using sequential selective extraction and oral bioaccessibility tests [Elektronische Daten] [C. Patinha, N. Durães, P. Sousa, A. Dias, A. Reis, Y. Noack, E. Ferreira da Silva] Urban dust is a heterogeneous mix, where traffic-related particles can combine with soil mineral compounds, forming a unique and site-specific material. These traffic-related particles are usually enriched in potentially harmful elements, enhancing the health risk for population by inhalation or ingestion. Urban dust samples from Estarreja city and traffic-related particles (brake dust and white traffic paint) were studied to understand the relative contribution of the traffic particles in the geochemical behaviour of urban dust and to evaluate the long-term impacts of the metals on an urban environment, as well as the risk to the populations. It was possible to distinguish two groups of urban dust samples according to Cu behaviour: (1) one group with low amounts of fine particles (<38µm), low contents of organic material, high percentage of Cu in soluble phases, and low Cu bioaccessible fraction (Bf) values. This group showed similar chemical behaviour with the brake dust samples of low- to mid-range car brands (with more than 10years old), composed by coarser wear particles; and (2) another group with greater amounts of fine particles (<38µm), with low percentage of Cu associated with soluble phases, and with greater Cu Bf values. This group behaved similar to those found for brake dust of mid- to high-range car brands (with less than 10years old). The results obtained showed that there is no direct correlation between the geoavailability of metals estimated by sequential selective chemical extraction(SSCE) and the in vitro oral bioaccessibility (UBM) test. Thus, oral bioaccessibility of urban dust is site specific. Geoavailability was greatly dependent on particle size, where the bioaccessibility tended to increase with a reduction in particle diameter. As anthropogenic particles showed high metal concentration and a smaller size than mineral particles, urban dusts are of major concern to the populations' health, since fine particles are easily re-suspended, easily ingested, and show high metal bioaccessibility. In addition, Estarreja is a coastal city often influenced by winds, which favours the re-suspension of small-sized contaminated particles. Even if the risk to the population does not represent an acute case, it should not be overlooked, and this study can serve as baseline study for cities under high traffic influence. Springer Science+Business Media Dordrecht, 2015 Urban dusts nationallicence Traffic-related particles nationallicence Oral bioaccessibility nationallicence SSCE nationallicence Patinha C. GeoBioTec, Department of Geosciences, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal aut Durães N. GeoBioTec, Department of Geosciences, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal aut Sousa P. Department of Geosciences, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal aut Dias A. GeoBioTec, Department of Geosciences, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal aut Reis A. GeoBioTec, Department of Geosciences, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal aut Noack Y. CNRS, CEREGE, UMR 7330, 13545, Aix en Provence Cedex 4, France aut Ferreira da Silva E. GeoBioTec, Department of Geosciences, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal aut Environmental Geochemistry and Health Springer Netherlands 37/4(2015-08-01), 707-724 0269-4042 37:4<707 2015 37 10653 https://doi.org/10.1007/s10653-015-9713-0 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10653-015-9713-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Patinha C. GeoBioTec, Department of Geosciences, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal aut NATIONALLICENCE 700 1- Durães N. GeoBioTec, Department of Geosciences, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal aut NATIONALLICENCE 700 1- Sousa P. Department of Geosciences, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal aut NATIONALLICENCE 700 1- Dias A. GeoBioTec, Department of Geosciences, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal aut NATIONALLICENCE 700 1- Reis A. GeoBioTec, Department of Geosciences, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal aut NATIONALLICENCE 700 1- Noack Y. CNRS, CEREGE, UMR 7330, 13545, Aix en Provence Cedex 4, France aut NATIONALLICENCE 700 1- Ferreira da Silva E. GeoBioTec, Department of Geosciences, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal aut NATIONALLICENCE 773 0- Environmental Geochemistry and Health Springer Netherlands 37/4(2015-08-01), 707-724 0269-4042 37:4<707 2015 37 10653