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dc.contributor.authorVaquero, Celina
dc.contributor.authorEsteban-Cubillo, Antonio
dc.contributor.authorSantaren, Julio
dc.contributor.authorLópez de Ipiña, Jesús
dc.contributor.authorGalarza, Nekane
dc.contributor.authorAragón, Gaizka
dc.contributor.authorMúgica, Iñaki
dc.contributor.authorLarraza, Iñigo
dc.contributor.authorPina-Zapardiel, Raúl
dc.contributor.authorGutierrez-Cañas, Cristina
dc.date.accessioned2020-03-31T10:34:54Z
dc.date.available2020-03-31T10:34:54Z
dc.date.issued2020-03
dc.identifier.citationVaquero, C., Esteban-Cubillo, A., Santaren, J. et al. Exposure Assessment During the Industrial Formulation and Application of Photocatalytic Mortars Based on Safer n-TiO2 Additives. Int J Environ Res (2020). https://doi.org/10.1007/s41742-020-00252-7en
dc.identifier.issn1735-6865en
dc.identifier.urihttp://hdl.handle.net/11556/896
dc.description.abstractTitanium dioxide nanoparticles (n-TiO2) are added to photocatalytic mortars to improve urban air quality. Their activity can be increased by dispersing and binding them on natural sepiolite surface. Workers handling photocatalytic additives can be exposed to n-TiO2. However, the release of nanoparticles to the workplace can be different if the material used is raw n-TiO2 powders or if the nanoparticles are supported on sepiolite. In this work, we compare occupational exposure to n-TiO2 for raw n-TiO2 and a hybrid additive n-TiO2/sepiolite obtained by a proprietary process. Measurements were performed in two industrial sites that process 1 ton batches of mortars, formulated with the same quantity of n-TiO2, followed by their application outdoors. Direct reading instruments were used to monitor particle number concentration and size distribution. Simultaneously, filter-based samples were collected for mass concentration and microscopy analysis. Two tasks produced a significant release of particles, the addition of fillers during the mortar formulation, in site 1, and the mixing of mortar with water for its application in the second site. For the first task, particle concentration was significantly lower when the n-TiO2/sepiolite was added compared to the raw n-TiO2. For the second task, once the mortar is fully formulated, this metric does not identify differences among the batches. Titanium mass concentration was 3–10 times lower when handling the mortar formulated with the hybrid additive. These results suggest that supporting the n-TiO2 on the sepiolite network not only increases the photocatalytic activity, but is also a safer design that reduces exposure to nanoparticles.en
dc.description.sponsorshipFP7 280535 (SCAFFOLD)en
dc.language.isoengen
dc.publisherSpringeren
dc.titleExposure Assessment During the Industrial Formulation and Application of Photocatalytic Mortars Based on Safer n-TiO2 Additivesen
dc.typearticleen
dc.identifier.doi10.1007/s41742-020-00252-7en
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/FP7/280535/EU/Innovative strategies, methods and tools for occupational risks management of manufactured nanomaterials (MNMs) in the construction industry/SCAFFOLDen
dc.rights.accessRightsembargoedAccessen
dc.subject.keywordsPhotocatalyticen
dc.subject.keywordsNano-TiO2en
dc.subject.keywordsAerosolen
dc.subject.keywordsInhalation exposureen
dc.subject.keywordsSafe by designen
dc.journal.titleInternational Journal of Environmental Researchen


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