Physical Properties and Lung Deposition of Particles Emitted from Five Major Indoor Sources.

0461963 - ÚCHP 2020 RIV CH eng J - Journal Article
Tuan, V.Vu. - Ondráček, Jakub - Ždímal, Vladimír - Schwarz, Jaroslav - Delgado-Saborit, J.M. - Harrison, R. M.
Physical Properties and Lung Deposition of Particles Emitted from Five Major Indoor Sources.
Air Quality, Atmosphere and Health (AQAH). Roč. 10, č. 1 (2017), s. 1-14. ISSN 1873-9318. E-ISSN 1873-9326
EU Projects: European Commission(XE) 315760 - HEXACOMM
Institutional support: RVO:67985858
Keywords : indoor sources * particle size * hygroscopic growth
OECD category: Physical chemistry
Impact factor: 2.662, year: 2017
Method of publishing: Open access
https://link.springer.com/content/pdf/10.1007%2Fs11869-016-0424-1.pdf

The physical properties of indoor particles were measured with an Scanning Mobility Particle Sizer (SMPS) system (14.6–850 nm), an Aerodynamic Particle Sizer (APS, 0.54–18 μm) and an Hygroscopic Tandem Differential Mobility Analyzer (H-TDMA) in an apartment located in an urban background site in Prague (Czech Republic) from 15August to 8 September, 2014. The total particle maximum number concentration was 9.38 × 104, 1.46×105, 2.89×104, 2.25 × 105 and 1.57 × 106 particles cm−3 for particles released from vacuum cleaning, soap/W5 cleaning spray, smoking, incense burning and cooking (frying) activities, respectively. Particles emitted from cleaning activities showed unimodal number size distributions, with the majority of particles (>98.2 %) in the ultrafine size range (Dp <100 nm) and modes at a diameter of 19.8 nm for vacuum cleaning and 30.6 nm for soap/W5 cleaning. Smoking and incense burning predominantly generated particles in the accumulation mode with a count median diameter around 90–150 nm while cooking emissions showed a bimodal structure with a main mode at 47.8 nm. Particles from vacuum cleaning, incense burning, smoking and cooking emissions were found to be nearly hydrophobic with an average growth factor (Gf) around 1.01–1.10, while particles emitted from desk cleaning using organic compounds were found to be lesshygroscopic (Gf ∼1.12–1.16). Based on an adjusted MPPD model with a consideration of the hygroscopic properties of particles, the total lung deposition fractions of these particles by number when they penetrate into the human lung were 0.73 ± 0.02, 0.62 ± 0.03, 0.37 ± 0.03, 0.32 ± 0.03 and 0.49 ± 0.02 for vacuum cleaning, desk cleaning, smoking, incense burning and cooking, respectively.

Permanent Link: http://hdl.handle.net/11104/0268233