The use of a housecleaning product in an indoor environment leading to oxygenated polar compounds and SOA formation: Gas and particulate phase chemical characterization

Outdoor and indoor UFP in primary schools across Barcelona

“…Reactions between O 3 and human skin oil (surface-sorbed squalene) or furnishings surfaces (aldehydes, ketones) have been described as significant secondary UFP-generating processes (Weschler, 2011;Wang and Waring, 2014). In the same line of research, Rossignol et al (2013) demonstrated that the use of house cleaning products can lead to the formation of a wide range of oxygenated polyfunctional secondary products in particulate phases detected as limonene ozonolysis products. Indoor fine particles have been reported to be enriched by carcinogenic compounds such as PAHs from cooking (Li et al, 2003;Taner et al, 2013), and by endocrine disruptors such as bisphenol A (Sangiorgi et al, 2013) and brominated flame retardants (D'Hollander et al, 2010) from electronic components and furniture.…”

Impact of room fragrance products on indoor air quality

“…The topic is of specific interest because of the substantial time per day dwellers are exposed to the scent substances (and additives/solvents) in case of home application, and when the source strength of such products is considered. It also has to be taken into account that fragrance substances of other sources may already be present in indoor air due to use of household products (Coleman et al, 2008;Kang et al, 2012;Rossignol et al, 2013;Singer et al, 2006), and room scenting products may increase both the number and the concentrations of such compounds in the indoor environment.…”

Significant OH production under surface cleaning and air cleaning conditions: Impact on indoor air quality

“…The average limonene concentrations in the published study were ~ 1ppb before cleaning, ~13 pbb 0-30 minutes from the start of cleaning and ~3 ppb 30-60 minutes after cleaning started. 6 After correcting for the fact that our study involved a smaller volume, larger AER and shorter cleaning time, equivalent averages for our conditions were ~0.2 ppb before cleaning, ~3 ppb average between 0-30 minutes and ~0.7 ppb 30-60 minutes after cleaning. The linalool concentration was set at an arbitrary emission rate of 75% that of limonene, such that peak concentrations of the two terpenes during cleaning were 4.5 and 6.2 ppb respectively for the preliminary model run (Run 1).…”

“…This observation is reinforced by the RO2 composition. measurements and modelling studies previously, 5,6,25,41 we believe this represents the first study to measure and model radical concentrations during the use of a commercial ACD and to investigate in detail the resulting chemistry that follows. Clearly, the choice of cleaning method can have a significant bearing on the resulting composition of the air inside a cleaned room and consequently, any subsequent health effects.…”

“…2 One area of active research indoors is the potential impact on health of using cleaning products, both for occupational cleaners 4 and for domestic use of cleaning products in the home. 5 Many cleaning products contain limonene, 6 which can be oxidised indoors by ozone to form a range of secondary products, including some that have demonstrated adverse health effects. 5,7,8 Although it remains unclear exactly what causes the adverse health effects, there is compelling evidence that the gas-phase products of limonene-ozone mixtures rather than those in the particle phase are responsible for prominent sensory effects.…”