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Submitted by Anonymous (not verified) on Mon, 02/26/2024 - 09:09
2022 Yes https://pubs.acs.org/doi/abs/10.1021/acs.est.1c06767 Stinson, Brett North America Observational Epidemiology Study Middle/Jr High (6-8) Temperature Humidity Carbon Dioxide (CO2) Volatile Organic Compounds (VOCs) Allergens Ptr-ms Activated carbon Indoor source strength Indoor VOCs Urban air quality For VOCs quantified in this study, there is a source to the outdoors of 8.6 ± 1.8 g/h in building exhaust air, of which 5.9 ± 1.7 g/h can be attributed to indoor sources (the building and occupants and their activities). The corresponding whole-building area emission factor from indoor sources is 1020 ± 300 μg/(m2 h), including reactive VOCs like isoprene and monoterpenes (33 ± 5.1 and 29 ± 5.7 μg/(m2h), respectively). Per-person emission factors are calculated for compounds associated with occupants and their activities, e.g., monoterpenes are emitted at a rate of 280 ± 80 μg/(person h). The air handler included carbon scrubbing, reducing supply air concentrations of 125 compounds by 38 ± 19% (mean ± std. dev.) with a net removal of 2.4 ± 0.4 g/h of organic compounds from the building. This carbon scrubber reduces steady-state indoor concentrations of organics by 65 μg/m3 and the contribution of indoor sources of VOCs to the outdoor environment by ∼40%.