| Title: | Heterogeneous chemistry of ozone with floor cleaning agent: Implications of secondary VOCs in the indoor environment |
| Author(s): | Xu J; Deng H; Wang Y; Li P; Zeng J; Pang H; Xu X; Li X; Yang Y; Gligorovski S; |
| Address: | "State Key Laboratory of Organic Geochemistry and Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Science, Guangzhou 510640, China; Chinese Academy of Science, Center for Excellence in Deep Earth Science, Guangzhou 510640, China; University of Chinese Academy of Sciences, Beijing, China. State Key Laboratory of Organic Geochemistry and Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Science, Guangzhou 510640, China; Chinese Academy of Science, Center for Excellence in Deep Earth Science, Guangzhou 510640, China. Institute of Mass Spectrometry and Atmospheric, Environment, Jinan University, Guangzhou 510632, China. School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, Guangdong, China; Jieyang Branch of Chemistry and Chemical Engineering Guangdong Laboratory (Rongjiang Laboratory), Jieyang 515200, China; Synergy Innovation Institute of GDUT, Shantou 515041, Guangdong, China. Electronic address: yangyan1209@gdut.edu.cn. State Key Laboratory of Organic Geochemistry and Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Science, Guangzhou 510640, China; Chinese Academy of Science, Center for Excellence in Deep Earth Science, Guangzhou 510640, China. Electronic address: gligorovski@gig.ac.cn" |
| DOI: | 10.1016/j.scitotenv.2022.160867 |
| ISSN/ISBN: | 1879-1026 (Electronic) 0048-9697 (Linking) |
| Abstract: | "Human daily activities such as cooking, and cleaning can affect the indoor air quality by releasing primary emitted volatile organic compounds (VOCs), as well as by the secondary product compounds formed through reactions with ozone (O(3)) and hydroxyl radicals (OH). However, our knowledge about the formation processes of the secondary VOCs is still incomplete. We performed real-time measurements of primary VOCs released by commercial floor-cleaning detergent and the secondary product compounds formed by heterogeneous reaction of O(3) with the constituents of the cleaning agent by use of high-resolution mass spectrometry. We measured the uptake coefficients of O(3) on the cleaning detergent at different relative humidities in dark and under different light intensities (320 nm < lambda < 400 nm) relevant for the indoor environment. On the basis of the detected compounds we developed tentative reaction mechanisms describing the formation of the secondary VOCs. Intriguingly, under light irradiation the formation of valeraldehyde was observed based on the photosensitized chemistry of acetophenone which is a constituent of the cleaning agent. Finally, we modeled the observed mixing ratios of three aldehydes, glyoxal, methylglyoxal, and 4-oxopentanal with respect to real-life indoor environment. The results suggest that secondary VOCs initiated by ozone chemistry can additionally impact the indoor air pollution" |
| Keywords: | "Humans *Volatile Organic Compounds/analysis *Ozone/analysis Detergents/analysis *Air Pollutants/analysis Glyoxal/analysis *Air Pollution, Indoor/analysis Aldehydes Heterogeneous chemistry Indoor chemistry Ozone UV-light VOCs;" |
| Notes: | "MedlineXu, Jinli Deng, Huifan Wang, Yiqun Li, Pan Zeng, Jianqiang Pang, Hongwei Xu, Xin Li, Xue Yang, Yan Gligorovski, Sasho eng Netherlands 2022/12/16 Sci Total Environ. 2023 Mar 1; 862:160867. doi: 10.1016/j.scitotenv.2022.160867. Epub 2022 Dec 12" |
