caa a22 4500 606200312 CHVBK 20210128100943.0 cr unu---uuuuu 210128e20151001xx s 000 0 eng 10.1007/s10653-015-9756-2 doi (NATIONALLICENCE)springer-10.1007/s10653-015-9756-2 Bioaccessibility of trace elementsin fine and ultrafine atmospheric particles in an industrial environment [Elektronische Daten] [Saliou Mbengue, Laurent Alleman, Pascal Flament] The lung bioaccessibility, i.e., the solubility in alveolar lung fluid of metals in particulate matter, has been recognized as an important parameter for health risk assessment, associated with the inhalation of airborne particles. The purpose of this study is to use an in vitro method to estimate the pulmonary bioaccessibility of toxic metals in different particle sizes, from a multi-influenced industrial emission area. The fine and ultrafine particles collected with cascade impactors in the chimneys and at different distances from a Fe-Mn smelter were extracted with a simulated alveolar fluid (Gamble solution). In addition, a four-step sequential extraction procedure was employed to approach the metal speciation. The bioaccessibility of metals ranged from almost insoluble for Fe (<1%) to extremely soluble for Rb (>80%). In terms of particle size, the trace element bioaccessibility is generally higher for the finer size fractions (submicron and ultrafine particles) than for the coarse one (>1µm). These submicron particles have a very high number concentration and specific surface area, which confer them an important contact surface with the alveolar fluid, i.e., a higher bioaccessibility. Interestingly, the bioaccessibility of most metals clearly increases between the chimney stacks and the close environment of the studied Fe-Mn smelter, over a very short distance (800m), possibly due to a mix with surrounding steelworks emissions. This increase is not observed over a greater distance from the smelter (2000m), when industrial particles were mixed with urban aerosols, except for Fe, under more soluble forms in combustion particles. Springer Science+Business Media Dordrecht, 2015 Trace element nationallicence Bioaccessibility nationallicence Speciation nationallicence Ultrafine particles nationallicence Mbengue Saliou Université Lille Nord de France, 59000, Lille, France aut Alleman Laurent Université Lille Nord de France, 59000, Lille, France aut Flament Pascal Université Lille Nord de France, 59000, Lille, France aut Environmental Geochemistry and Health Springer Netherlands 37/5(2015-10-01), 875-889 0269-4042 37:5<875 2015 37 10653 https://doi.org/10.1007/s10653-015-9756-2 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/s10653-015-9756-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mbengue Saliou Université Lille Nord de France, 59000, Lille, France aut NATIONALLICENCE 700 1- Alleman Laurent Université Lille Nord de France, 59000, Lille, France aut NATIONALLICENCE 700 1- Flament Pascal Université Lille Nord de France, 59000, Lille, France aut NATIONALLICENCE 773 0- Environmental Geochemistry and Health Springer Netherlands 37/5(2015-10-01), 875-889 0269-4042 37:5<875 2015 37 10653