Anti-perspirant deodorant particulate matter temporal concentrations during home usage
Abstract Particulate matter (PM) in ambient air is associated with many adverse health outcomes. Although many anthropogenic activities are associated with PM release in indoor settings, dispersion and persistence of PM is poorly understood. In this study, concentration, persistence and dispersion of PM2.5 and PM10 released following aerosol antiperspirant use were measured in a bathroom environment under several door and window ventilation conditions, and in a nearby bedroom. Daily mean concentrations were elevated in all experimental conditions compared to the control, but varied depending on the ventilation condition. The daily mean concentrations exceeded the WHO daily mean guideline values when there was little or insufficient ventilation in the bathroom, whereas ventilation through opening doors or windows prevents exceedances. After spraying, mean peak PM concentrations were lowest in the bathroom when the door and window were left open.