| Title: | Using Real Time Measurements to Derive the Indoor and Outdoor Contributions of Submicron Particulate Species and Trace Gases |
| Author(s): | Stratigou E; Dusanter S; Brito J; Tison E; Riffault V; |
| Address: | "Centre for Energy and Environment, IMT Nord Europe, University of Lille, Institut Mines-Telecom, F-59000 Lille, France" |
| ISSN/ISBN: | 2305-6304 (Electronic) 2305-6304 (Linking) |
| Abstract: | "The indoor environment is usually more polluted than outdoors due to emissions of gas and particle-phase pollutants from multiple sources, leading to their accumulation on top of the infiltration of outdoor pollution. While it is widely recognized that negative health effects arise from the exposure to outdoor air pollution, exposure to indoor pollutants also needs to be well assessed since we spend most of our time (~90%) breathing indoors. Indoor concentrations of pollutants are driven by physicochemical processes and chemical transformations taking place indoors, acting as sources and/or sinks. While these basic concepts are understood, assessing the contribution of each process is still challenging. In this study, we deployed online instrumentation in an unoccupied room to test a methodology for the apportionment of indoor and outdoor pollutant sources. This method was successfully applied to the apportionment of PM(1) and VOCs, however, there are limitations for reactive gases such as O(3). The results showed that this unoccupied indoor environment acts as a source of VOCs and contributes 87% on OVOCs and 6% on C(x)H(y), while it acts as a sink for particles, likely due to losses through volatilization up to 60%" |
| Keywords: | apportionment methodology indoor air chemistry indoor air quality particulate matter (PM) volatile organic compounds (VOC); |
| Notes: | "PubMed-not-MEDLINEStratigou, Evdokia Dusanter, Sebastien Brito, Joel Tison, Emmanuel Riffault, Veronique eng ANR-11-LABX-0005-01/Labex CaPPA/ X/CPER Climibio/ X/Regional Council 'Hauts-de-France" / X/European Regional Development Fund (ERDF)/ Switzerland 2022/04/22 Toxics. 2022 Mar 29; 10(4):161. doi: 10.3390/toxics10040161" |
