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Characterizing the Chemical Profile of Incidental Ultrafine Particles for Toxicity Assessment Using an Aerosol Concentrator

2021-10-09Journal article Open access
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dc.contributor.authorViana, M
dc.contributor.authorSalmatonidis, A
dc.contributor.authorBezantakos, S
dc.contributor.authorRibalta, C
dc.contributor.authorMoreno, N
dc.contributor.authorCórdoba, P
dc.contributor.authorCassee, F R
dc.contributor.authorBoere, J
dc.contributor.authorFraga, S
dc.contributor.authorTeixeira, J P
dc.contributor.authorBessa, M J
dc.contributor.authorMonfort, E
dc.date.accessioned2022-02-02T15:40:59Z
dc.date.available2022-02-02T15:40:59Z
dc.date.issued2021-10-09
dc.description.abstractIncidental ultrafine particles (UFPs) constitute a key pollutant in industrial workplaces. However, characterizing their chemical properties for exposure and toxicity assessments still remains a challenge. In this work, the performance of an aerosol concentrator (Versatile Aerosol Concentration Enrichment System, VACES) was assessed to simultaneously sample UFPs on filter substrates (for chemical analysis) and as liquid suspensions (for toxicity assessment), in a high UFP concentration scenario. An industrial case study was selected where metal-containing UFPs were emitted during thermal spraying of ceramic coatings. Results evidenced the comparability of the VACES system with online monitors in terms of UFP particle mass (for concentrations up to 95 µg UFP/m3 ) and between filters and liquid suspensions, in terms of particle composition (for concentrations up to 1000 µg/ m3). This supports the applicability of this tool for UFP collection in view of chemical and toxicological characterization for incidental UFPs. In the industrial setting evaluated, results showed that the spraying temperature was a driver of fractionation of metals between UF (<0.2 µm) and fine (0.2– 2.5 µm) particles. Potentially health hazardous metals (Ni, Cr) were enriched in UFPs and depleted in the fine particle fraction. Metals vaporized at high temperatures and concentrated in the UF fraction through nucleation processes. Results evidenced the need to understand incidental particle formation mechanisms due to their direct implications on particle composition and, thus, exposure. It is advisable that personal exposure and subsequent risk assessments in occupational settings should include dedicated metrics to monitor UFPs (especially, incidental).pt_PT
dc.description.abstractWhat’s important about this paper: Our work addresses the challenge of characterizing the bulk chemical composition of ultrafine particles in occupational settings, for exposure and toxicity assessments. We tested the performance of an aerosol concentrator (VACES) to simultaneously sample ultrafine particles (UFPs) on filter substrates and as liquid suspensions, in a high UFP concentration scenario. An industrial case study was selected where metal-bearing UFPs were emitted. We report the chemical exposures characterized in the industrial facility, and evidence the comparability of the VACES system with online monitors for UFP particle mass (up to 95 µg UFP/m3) as well as between UFP chemical composition on filters and in suspension. This supports the applicability of this tool for UFP collection in view of chemical and toxicological characterization of exposures to incidental UFPs in workplace settings.pt_PT
dc.description.abstractHighlights: - The VACES system is a useful tool for UFP sampling in high-concentration settings; - UFP collected simultaneously on filters and in suspension showed good comparability; - UFP chemical profiles were characterized; - Health-hazardous metals Ni and Cr accumulated in UFPs; - Understanding emission mechanisms is key to identifying exposure sources.pt_PT
dc.description.sponsorshipThis work was funded by SIINN ERA-NET (project id: 16), the Spanish MINECO (PCIN-2015-173-C02-01) and the French agency (Region Hauts de France). The Spanish Ministry of Science and Innovation (Project CEX2018-000794-S; Severo Ochoa) and the Generalitat de Catalunya (project number: AGAUR 2017 SGR41) provided support for the indirect costs for the Institute of Environmental Assessment and Water Research (IDAEA-CSIC). We acknowledge support of the publication fee by the CSIC Open Access Publication Support Initiative through its Unit of Information Resources for Research (URICI).pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationAnn Work Expo Health. 2021 Oct 9;65(8):966-978. doi: 10.1093/annweh/wxab011pt_PT
dc.identifier.doi10.1093/annweh/wxab011pt_PT
dc.identifier.issn2398-7308
dc.identifier.urihttp://hdl.handle.net/10400.18/7911
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherOxford University Presspt_PT
dc.relation.publisherversionhttps://academic.oup.com/annweh/article/65/8/966/6329245pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/pt_PT
dc.subjectMorphologypt_PT
dc.subjectNew Particle Formationpt_PT
dc.subjectMetal Nanoparticlespt_PT
dc.subjectOccupational Exposurept_PT
dc.subjectVersatile Aerosol Concentratorpt_PT
dc.subjectWorkplacept_PT
dc.subjectAr e Saúde Ocupacionalpt_PT
dc.titleCharacterizing the Chemical Profile of Incidental Ultrafine Particles for Toxicity Assessment Using an Aerosol Concentratorpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage978pt_PT
oaire.citation.issue8pt_PT
oaire.citation.startPage966pt_PT
oaire.citation.titleAnnals of Work Exposures and Healthpt_PT
oaire.citation.volume65pt_PT
rcaap.embargofctAcesso de acordo com página web do editor da revista.pt_PT
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT

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