| Title: | Watching Paint Dry: Organic Vapor Emissions from Architectural Coatings and their Impact on Secondary Organic Aerosol Formation |
| Author(s): | Tanzer-Gruener R; Rajan PE; Dugan LD; Bier ME; Robinson AL; Presto AA; |
| Address: | "Center for Atmospheric Particle Studies and Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States. Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States" |
| ISSN/ISBN: | 1520-5851 (Electronic) 0013-936X (Linking) |
| Abstract: | "Emissions from volatile chemical products (VCPs) are emerging as a major source of anthropogenic secondary organic aerosol (SOA) precursors. Paints and coatings are an important class of VCPs that emit both volatile and intermediate volatility organic compounds (VOCs and IVOCs). In this study, we directly measured I/VOC emissions from representative water- (latex) and oil-based paints used in the U.S. Paint I/VOC emissions vary by several orders of magnitude by both the solvent and gloss level. Oil-based paints had the highest emissions (>10(5) mug/g-paint), whereas low-gloss interior paints (Flat, Satin, and Semigloss) all emitted approximately 10(2) mug/g-paint. Emissions from interior paints are dominated by VOCs, whereas exterior-use paints emitted a larger fraction of IVOCs. Extended emission tests showed that most I/VOC emissions occur within 12-24 h after paint application, though some paints continue to emit IVOCs for 48 h or more. We used our data to estimate paint I/VOC emissions and the subsequent SOA production in the U.S. Total annual paint I/VOC emissions are 48-155 Gg (0.15-0.48 kg/person). These emissions contribute to the formation of 2.2-7.5 Gg of SOA annually. Oil-based paints contribute 70-98% of I/VOC emissions and 61-99% of SOA formation, even though they only account for a minority of paint usage" |
| Keywords: | Aerosols/analysis *Air Pollutants/analysis Gases Humans Paint *Volatile Organic Compounds Ptr-ms Vcp emissions urban volatility; |
| Notes: | "MedlineTanzer-Gruener, Rebecca Rajan, Pavithra Ethi Dugan, Liam D Bier, Mark E Robinson, Allen L Presto, Albert A eng Research Support, Non-U.S. Gov't 2022/08/06 Environ Sci Technol. 2022 Aug 16; 56(16):11236-11245. doi: 10.1021/acs.est.2c02478. Epub 2022 Aug 5" |
