Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Estimation of indoor and outdoor ratios of selected volatile organic compounds in Canada
https://orcid.org/0000-0001-9138-5986
https://orcid.org/0000-0003-1917-7343
Abstract Indoor air and outdoor air concentration (I/O) ratio can be used to identify the origins of volatile organic compounds (VOCs). I/O ratios of 25 VOCs in Canada were estimated based on the data collected in various areas in Canada between September 2009 and December 2011. The indoor VOC data were extracted from the Canadian Health Measures Survey (CHMS). Outdoor VOC data were obtained from Canada's National Air Pollution Surveillance (NAPS) Network. The sampling locations covered nine areas in six provinces in Canada. Indoor air concentrations were found higher than outdoor air for all studied VOCs, except for carbon tetrachloride. Two different approaches were employed to estimate the I/O ratios; both approaches produced similar I/O values. The I/O ratios obtained from this study were similar to two other Canadian studies where indoor air and outdoor air of individual dwellings were measured. However, the I/O ratios found in Canada were higher than those in European cities and in two large USA cities, possibly due to the fact that the outdoor air concentrations recorded in the Canadian studies were lower. Possible source origins identified for the studied VOCs based on their I/O ratios were similar to those reported by others. In general, chlorinated hydrocarbons, short-chain (C5, C6) n-alkanes and benzene had significant outdoor sources, while long-chain (C10C12) n-alkanes, terpenes, naphthalene and styrene had significant indoor sources. The remaining VOCs had mixed indoor and outdoor sources.
Highlights A unique approach was developed to the calculation of the ratios of VOCs in indoor and outdoor air (I/O). Data used for the calculation of I/O were from two independent large surveys, one for indoor air and the other outdoor air. Two calculation methods produced similar I/O ratios boosting confidence for the calculated I/O ratios for selected VOCs. Rank of VOC sources was similar to ranks reported based on traditional paired indoor and outdoor air samples.
Estimation of indoor and outdoor ratios of selected volatile organic compounds in Canada
https://orcid.org/0000-0001-9138-5986
https://orcid.org/0000-0003-1917-7343
Abstract Indoor air and outdoor air concentration (I/O) ratio can be used to identify the origins of volatile organic compounds (VOCs). I/O ratios of 25 VOCs in Canada were estimated based on the data collected in various areas in Canada between September 2009 and December 2011. The indoor VOC data were extracted from the Canadian Health Measures Survey (CHMS). Outdoor VOC data were obtained from Canada's National Air Pollution Surveillance (NAPS) Network. The sampling locations covered nine areas in six provinces in Canada. Indoor air concentrations were found higher than outdoor air for all studied VOCs, except for carbon tetrachloride. Two different approaches were employed to estimate the I/O ratios; both approaches produced similar I/O values. The I/O ratios obtained from this study were similar to two other Canadian studies where indoor air and outdoor air of individual dwellings were measured. However, the I/O ratios found in Canada were higher than those in European cities and in two large USA cities, possibly due to the fact that the outdoor air concentrations recorded in the Canadian studies were lower. Possible source origins identified for the studied VOCs based on their I/O ratios were similar to those reported by others. In general, chlorinated hydrocarbons, short-chain (C5, C6) n-alkanes and benzene had significant outdoor sources, while long-chain (C10C12) n-alkanes, terpenes, naphthalene and styrene had significant indoor sources. The remaining VOCs had mixed indoor and outdoor sources.
Highlights A unique approach was developed to the calculation of the ratios of VOCs in indoor and outdoor air (I/O). Data used for the calculation of I/O were from two independent large surveys, one for indoor air and the other outdoor air. Two calculation methods produced similar I/O ratios boosting confidence for the calculated I/O ratios for selected VOCs. Rank of VOC sources was similar to ranks reported based on traditional paired indoor and outdoor air samples.
Estimation of indoor and outdoor ratios of selected volatile organic compounds in Canada
https://orcid.org/0000-0001-9138-5986
https://orcid.org/0000-0003-1917-7343
Abstract Indoor air and outdoor air concentration (I/O) ratio can be used to identify the origins of volatile organic compounds (VOCs). I/O ratios of 25 VOCs in Canada were estimated based on the data collected in various areas in Canada between September 2009 and December 2011. The indoor VOC data were extracted from the Canadian Health Measures Survey (CHMS). Outdoor VOC data were obtained from Canada's National Air Pollution Surveillance (NAPS) Network. The sampling locations covered nine areas in six provinces in Canada. Indoor air concentrations were found higher than outdoor air for all studied VOCs, except for carbon tetrachloride. Two different approaches were employed to estimate the I/O ratios; both approaches produced similar I/O values. The I/O ratios obtained from this study were similar to two other Canadian studies where indoor air and outdoor air of individual dwellings were measured. However, the I/O ratios found in Canada were higher than those in European cities and in two large USA cities, possibly due to the fact that the outdoor air concentrations recorded in the Canadian studies were lower. Possible source origins identified for the studied VOCs based on their I/O ratios were similar to those reported by others. In general, chlorinated hydrocarbons, short-chain (C5, C6) n-alkanes and benzene had significant outdoor sources, while long-chain (C10C12) n-alkanes, terpenes, naphthalene and styrene had significant indoor sources. The remaining VOCs had mixed indoor and outdoor sources.
Highlights A unique approach was developed to the calculation of the ratios of VOCs in indoor and outdoor air (I/O). Data used for the calculation of I/O were from two independent large surveys, one for indoor air and the other outdoor air. Two calculation methods produced similar I/O ratios boosting confidence for the calculated I/O ratios for selected VOCs. Rank of VOC sources was similar to ranks reported based on traditional paired indoor and outdoor air samples.
Estimation of indoor and outdoor ratios of selected volatile organic compounds in Canada
Xu, Jing (Autor:in) / Szyszkowicz, Mieczyslaw (Autor:in) / Jovic, Branka (Autor:in) / Cakmak, Sabit (Autor:in) / Austin, Claire C. (Autor:in) / Zhu, Jiping (Autor:in)
Atmospheric Environment ; 141 ; 523-531
12.07.2016
9 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Source apportionment of indoor and outdoor volatile organic compounds at homes in Edmonton, Canada
| Online Contents | 2015
Source apportionment of indoor and outdoor volatile organic compounds at homes in Edmonton, Canada
| British Library Online Contents | 2015