| Title: | Adequacy of stationary measurements as proxies for residential personal exposure to gaseous and particle air pollutants |
| Author(s): | Gonzalez Serrano V; Lin EZ; Godri Pollitt KJ; Licina D; |
| Address: | "Human-Oriented Built Environment Lab, School of Architecture, Civil and Environmental Engineering, Ecole Polytechnique Federale de Lausanne (EPFL), Switzerland. Environmental Health Sciences Department, School of Public Health, Yale University, New Haven, USA. Human-Oriented Built Environment Lab, School of Architecture, Civil and Environmental Engineering, Ecole Polytechnique Federale de Lausanne (EPFL), Switzerland. Electronic address: dusan.licina@epfl.ch" |
| DOI: | 10.1016/j.envres.2023.116197 |
| ISSN/ISBN: | 1096-0953 (Electronic) 0013-9351 (Linking) |
| Abstract: | "People are exposed to myriad of airborne pollutants in their homes. Owing to diverse potential sources of air pollution and human activity patterns, accurate assessment of residential exposures is complex. In this study, we explored the relationship between personal and stationary air pollutant measurements in residences of 37 participants working from home during the heating season. Stationary environmental monitors (SEMs) were located in the bedroom, living room or home office and personal exposure monitors (PEMs) were worn by the participants. SEMs and PEMs included both real-time sensors and passive samplers. During three consecutive weekdays, continuous data were obtained for particle number concentration (size range 0.3-10 mum), carbon dioxide (CO(2)), and total volatile organic compounds (TVOC), while passive samplers collected integrated measures of 36 volatile organic compounds (VOCs) and semi volatile organic compounds (SVOCs). The personal cloud effect was detected in >80% of the participants for CO(2) and >50% participants for PM(10). Multiple linear regression analysis showed that a single CO(2) monitor placed in the bedroom efficiently represented personal exposure to CO(2) (R(2) = 0.90) and moderately so for PM(10) (R(2) = 0.55). Adding a second or third sensor in a residence did not lead to improved exposure estimates for CO(2), with only 6-9% improvement for particles. Selecting data from SEMs when participants were in the same room improved personal exposure estimates by 33% for CO(2) and 5% for particles. Out of 36 detected VOCs and SVOCs, 13 had at least 50% higher concentrations in personal versus stationary samples. Findings from this study aid improved understanding of the complex dynamics of gaseous and particle pollutants and their sources in residences, and could support the development of refined procedures for residential air quality monitoring and inhalation exposure assessment" |
| Keywords: | Humans *Air Pollutants/analysis *Volatile Organic Compounds/analysis Gases Carbon Dioxide/analysis *Air Pollution/analysis Indoor sources Personal cloud Residential air quality Sensor placement Spatial variation; |
| Notes: | "MedlineGonzalez Serrano, Viviana Lin, Elizabeth Z Godri Pollitt, Krystal J Licina, Dusan eng Netherlands 2023/05/25 Environ Res. 2023 Aug 15; 231(Pt 2):116197. doi: 10.1016/j.envres.2023.116197. Epub 2023 May 22" |
