Assessing the indoor air quality and their predictor variable in 21 home offices during the Covid-19 pandemic in Norway.

Autor: Justo Alonso M; Department of Energy and Process Engineering, NTNU, Kolbjørn Hejes v 1B, Trondheim, Norway., Moazami TN; Department of Industrial Economics and Technology Management, NTNU, Sem Sælands vei 5, Trondheim, Norway., Liu P; Department: Architecture, Materials and Structures SINTEF Community, Høgskoleringen 13, Trondheim, Norway., Jørgensen RB; Department of Industrial Economics and Technology Management, NTNU, Sem Sælands vei 5, Trondheim, Norway., Mathisen HM; Department of Energy and Process Engineering, NTNU, Kolbjørn Hejes v 1B, Trondheim, Norway.
Jazyk: angličtina
Zdroj: Building and environment [Build Environ] 2022 Nov; Vol. 225, pp. 109580. Date of Electronic Publication: 2022 Sep 08.
DOI: 10.1016/j.buildenv.2022.109580
Abstrakt: In this study, concentrations of pollutants: formaldehyde, carbon dioxide (CO 2 ), and total volatile organic compounds (TVOC) and parameters: indoor room temperature and relative humidity (RH) were measured in 21 home offices for at least one week in winter in Trondheim, Norway. Eleven of these were measured again for the same duration in summer. Potentially explanatory variables of these parameters were collected, including building and renovation year, house type, building location, trickle vent status, occupancy, wood stove, floor material, pets, RH, and air temperature. The association between indoor air pollutants and their potential predictor variables was analyzed using generalized estimation equations to determine the significant parameters to control pollutants. Significantly seasonal differences in concentrations were observed for CO 2 and formaldehyde, while no significant seasonal difference was observed for TVOC. For TVOC and formaldehyde, trickle vent, RH, and air temperature were among the most important predictor variables. Although higher concentrations of CO 2 were measured in cases where the trickle vent was closed, the most important predictor variables for CO 2 were season, RH, and indoor air temperature. The formaldehyde concentrations were higher outside working hours but mostly below health thresholds recommendations; for CO 2 , 11 of the measured cases had indoor concentrations exceeding 1000 ppm in 10% of the measured time. For TVOC, the concentrations were above the recommended values by WHO in 73% of the cases. RH was generally low in winter. The temperature was generally kept over the recommended level of 22-24 °C during working hours.
Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(© 2022 The Authors.)
Databáze: MEDLINE
Externí odkaz: