Journal article
Dark Chemistry during Bleach Cleaning Enhances Oxidation of Organics and Secondary Organic Aerosol Production Indoors
Environmental science & technology letters, v 7(11), pp 795-801
10 Nov 2020
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Bleach can oxidize volatile organic compounds (VOCs) and contribute to secondary organic aerosol (SOA) indoors. During the House Observations of Microbial and Environmental Chemistry (HOMEChem) campaign, we observed indoor terpene mixing ratios decrease during bleach cleaning periods, with simultaneous increases in oxidized VOC (OVOC) products. Cooking just prior to bleach cleaning significantly increased SOA due to uptake of bleach-related OVOCs onto cooking aerosols. While SOA formation occurred, it was small (<3%) relative to total organic aerosol mass concentrations. Bleach cleaning chemistry also produced several potentially toxic chlorinated and nitrogenated VOCs indoors, including isocyanates, cyanogen chloride, and chlorocarbons. Observed volatile chlorinated organic acids were likely impurities from the bleach. The bleach-induced terpene oxidation, SOA formation, and chlorinated/nitrogenated VOC production were independent of indoor illumination, consistent with dark chemical production. These observations add to previous studies that demonstrate bleach as a source of potentially harmful primary and secondary pollutants to indoor air.
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Details
- Title
- Dark Chemistry during Bleach Cleaning Enhances Oxidation of Organics and Secondary Organic Aerosol Production Indoors
- Creators
- James M Mattila - Colorado State UniversityCaleb Arata - University of California, BerkeleyChen Wang - University of TorontoErin F Katz - Drexel UniversityAndrew Abeleira - Colorado State UniversityYong Zhou - Colorado State UniversityShan Zhou - Syracuse UniversityAllen H Goldstein - University of California, BerkeleyJonathan P. D Abbatt - University of TorontoPeter F DeCarlo - Drexel UniversityDelphine K Farmer - Colorado State University
- Publication Details
- Environmental science & technology letters, v 7(11), pp 795-801
- Publisher
- American Chemical Society; Washington, DC
- Number of pages
- 7
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Civil, Architectural, and Environmental Engineering
- Web of Science ID
- WOS:000592418300003
- Scopus ID
- 2-s2.0-85095766025
- Other Identifier
- 991019168278304721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Engineering, Environmental
- Environmental Sciences