| Title: | Particle emission rates during electrostatic spray deposition of TiO(2) nanoparticle-based photoactive coating |
| Author(s): | Koivisto AJ; Jensen ACO; Kling KI; Kling J; Budtz HC; Koponen IK; Tuinman I; Hussein T; Jensen KA; Norgaard A; Levin M; |
| Address: | "National Research Centre for the Working Environment, Lerso Parkalle 105, Copenhagen, DK-2100, Denmark. Electronic address: jok@nfa.dk. National Research Centre for the Working Environment, Lerso Parkalle 105, Copenhagen, DK-2100, Denmark. Center for Electron Nanoscopy, Technical University of Denmark, Fysikvej 307, DK-2800 Kgs., Lyngby, Denmark. TNO, CBRN Protection, Lange Kleiweg 137, 2288 GJ, Rijswijk, Netherlands. The University of Jordan, Faculty of Science, Department of Physics, Amman, JO-11942 Jordan. National Research Centre for the Working Environment, Lerso Parkalle 105, Copenhagen, DK-2100, Denmark; ACT. Global, Kajakvej 2, 2770, Kastrup, Denmark" |
| DOI: | 10.1016/j.jhazmat.2017.07.045 |
| ISSN/ISBN: | 1873-3336 (Electronic) 0304-3894 (Linking) |
| Abstract: | "Here, we studied the particle release rate during Electrostatic spray deposition of anatase-(TiO(2))-based photoactive coating onto tiles and wallpaper using a commercially available electrostatic spray device. Spraying was performed in a 20.3m(3) test chamber while measuring concentrations of 5.6nm to 31mum-size particles and volatile organic compounds (VOC), as well as particle deposition onto room surfaces and on the spray gun user hand. The particle emission and deposition rates were quantified using aerosol mass balance modelling. The geometric mean particle number emission rate was 1.9x10(10)s(-1) and the mean mass emission rate was 381mugs(-1). The respirable mass emission-rate was 65% lower than observed for the entire measured size-range. The mass emission rates were linearly scalable (+/-ca. 20%) to the process duration. The particle deposition rates were up to 15h(-1) for <1mum-size and the deposited particles consisted of mainly TiO(2), TiO(2) mixed with Cl and/or Ag, TiO(2) particles coated with carbon, and Ag particles with size ranging from 60nm to ca. 5mum. As expected, no significant VOC emissions were observed as a result of spraying. Finally, we provide recommendations for exposure model parameterization" |
| Keywords: | Deposition rate Electrostatic spray deposition Emission rate Exposure modelling Indoor aerosol modeling; |
| Notes: | "PubMed-not-MEDLINEKoivisto, Antti J Jensen, Alexander C O Kling, Kirsten I Kling, Jens Budtz, Hans Christian Koponen, Ismo K Tuinman, Ilse Hussein, Tareq Jensen, Keld A Norgaard, Asger Levin, Marcus eng Netherlands 2017/08/07 J Hazard Mater. 2018 Jan 5; 341:218-227. doi: 10.1016/j.jhazmat.2017.07.045. Epub 2017 Jul 29" |
