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dc.contributor.authorViana, Marcelo
dc.contributor.authorFonseca, A.S.
dc.contributor.authorQuerol, Xavier
dc.contributor.authorLópez Lilao, Ana
dc.contributor.authorCarpio Cobo, Pablo
dc.contributor.authorSalmatonidis, Apostolos
dc.contributor.authorMonfort, Eliseo
dc.identifier.citationViana, M., Fonseca, A. S., Querol, X., López-Lilao, A., Carpio, P., Salmatonidis, A., & Monfort, E. (2017). Workplace exposure and release of ultrafine particles during atmospheric plasma spraying in the ceramic industry. Science of The Total Environment, 599, 2065-2073.ca_CA
dc.description.abstractAtmospheric plasma spraying (APS) is a frequently used technique to produce enhanced-property coatings for different materials in the ceramic industry. This work aimed to characterise and quantify the impact of APS on workplace exposure to airborne particles, with a focus on ultrafine particles (UFPs, <100 nm) and nanoparticles (<50 nm). Particle number, mass concentrations, alveolar lung deposited surface area concentration, and size distributions, in the range 10 nm – 20 μm were simultaneously monitored at the emission source, in the worker breathing zone, and in outdoor air. Different input materials (known as feedstock) were tested: (a) micro-sized powders, and (b) suspensions containing submicron- or nano-sized particles. Results evidenced significant UFP emissions (up to 3.3x106/cm3) inside the projection chamber, which impacted exposure in the breathing zone outside the projection chamber (up to 8.3x105/cm3). Environmental release of UFPs was also detected and quantified (3.9x105/cm330 ). Engineered nanoparticle (ENP) release to workplace air was also evidenced by TEM microscopy. UFP emissions were detected during the application of both micro-sized powder and suspensions containing submicron- or nano-sized particles, thus suggesting that emissions were process- (and not material-) dependent. An effective risk prevention protocol was implemented, which resulted in a reduction of worker UFP exposure in the breathing zone. These findings evidence the potential risk of occupational exposure to UFPs during atmospheric plasma spraying, and raise the need for further research on UFP formation mechanisms in high-energy industrial processes.ca_CA
dc.format.extent18 p.ca_CA
dc.relation.isPartOfScience of The Total Environment, 2017, vol. 599, p. 2065-2073.ca_CA
dc.subjectprocess-generated particlesca_CA
dc.subjectengineered nanoparticlesca_CA
dc.subjectpristine nanoparticlesca_CA
dc.subjectmitigation strategiesca_CA
dc.subjectoccupational healthca_CA
dc.subjectindoor air qualityca_CA
dc.subjectthermal plasma sprayingca_CA
dc.titleDeterminants of workplace exposure and release of ultrafine particles during atmospheric plasma spraying in the ceramic industryca_CA
dc.relation.projectIDThis project was supported by the Spanish MINECO through project PCIN-2015-173- C02-01, under the frame of SIINN, the ERA-NET for a Safe Implementation of Innovative Nanoscience and Nanotechnology, by SIINN-ERANET project CERASAFE (id.:16). Support is also acknowledged to FP7 Marie Curie ITN HEXACOMM (Nr. 315760), Generalitat de Catalunya 2014 SGR33, the Department of Environmental Quality of the Generalitat de Catalunya, and the Spanish Ministry of the Environment (13CAES006).ca_CA

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