Ozone reaction with clothing and its initiated particle generation in an environmental chamber

Study of outdoor ozone penetration into buildings through ventilation and infiltration

“…Although the surface ozone reaction decreases the indoor ozone concentration, it can generate secondary byproducts such as volatile organic compounds (VOCs) and ultrafine particles that can be even more harmful than ozone itself [6,41,42]. According to Eq.…”

“…Occupants might be a significant part of ozone sink [41,42], and thus different density of occupants will pose uncertainties to the ozone surface removal rate and make the prediction of I/O ratio less accurate.…”

Ozone in indoor environments: Research progress in the past 15 years

“…]ss = 0), at "LVLR", "LVHR", "HVLR", and "HVHR" are 3.2, 9.6, 6.9, and 16.3, respectively; Áv = 1 -assuming 100% outdoor to indoor transport of ozone; Cout = 133 g/m 3 value used as typical peak outdoor ozone concentration (Blondeau et al, 2005) -outdoor-to-indoor O3 emission rate (mg/h) was determined from multiplication of total air exchange (h −1 ), outdoor ozone concentration (mg/m 3 ) and volume of indoor space (m 3 ); V = 118m 3 -hypothetical volume of assumed indoor environment of an office building. (2000); Nazaroff (2002a, 2002b); Grøntoft and Raychaudhuri (2004) Destaillats, Hodgson, & Nazaroff, 2008;Coleman, Lunden, Destaillats, & Nazaroff, 2008;Destaillats et al, 2006;Fadeyi, 2014;Fadeyi et al, 2009;Huang et al, 2011;Langer, Moldanová, Arrhenius, Ljungström, & Ekberg, 2008;Li, Turpin, & Shields, 2002;Petrick & Dubowski, 2009;Rai et al, 2013;Rohr et al, 2003;Sarwar & Corsi, 2007;Sarwar, Corsi, Kimura, Allena, & Weschlerb, 2002;Sarwar, Corsi, Allen, & Weschler, 2003;Sarwar, Olson, Corsi, & Weschler, 2004;Youssefi & Waring, 2014). Lowering ventilation rate would shift SOA particle size towards larger particle size due to increase in residence time that enhances accretion -growth of particle through addition (Weschler & Shields, 2003;Sarwar & Corsi, 2007).…”

“…Ozone reactions with T-shirt soiled with human skin oil, causing ozone reduction, caused more production of ozone initiated chemistry products. Rai et al (2013Rai et al ( , 2014aRai et al ( , 2014bRai et al ( , 2015 Exposure of painted wooden panels to ozone lead to increase in emissions of formaldehyde. Huang, Chen, and Chen (2012) as increase in humidity causes more water to be adsorbed on the material surface, at high humidity range, the bond between the new layer of adsorbed water and the material surface becomes relatively weaker.…”

“…Several studies also support this finding -see references in Table 2. As explained above, increase in concentrations of low vapour pressure oxidation products, due to ozone reactions with human skin oils, would lead to increase in SOA concentrations (Rai et al, 2013;Wang & Waring, 2014).…”