Watching Paint Dry: Organic Vapor Emissions from Architectural Coatings and their Impact on Secondary Organic Aerosol Formation
Watching Paint Dry: Organic Vapor Emissions from Architectural Coatings and their Impact on Secondary Organic Aerosol Formation
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观察油漆干燥：建筑涂料的有机蒸气排放及其对二次有机气溶胶形成的影响
DOI：
10.1021/acs.est.2c02478
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发表时间：
2022
影响因子：
11.4
通讯作者：
Presto, Albert A.
中科院分区：
文献类型：
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作者：
Tanzer-Gruener, Rebecca;Rajan, Pavithra Ethi;Dugan, Liam D.;Bier, Mark E.;Robinson, Allen L.;Presto, Albert A.
挥发性化学产品排放正在成为人为二次有机气溶胶前体的一个主要来源。油漆和涂料是一类重要的VCP，会释放挥发性和中等挥发性有机化合物（VOC和IVOC）。在这项研究中，我们直接测量了美国使用的代表性水性（乳胶）和油性涂料的I/VOC排放量。涂料I/VOC排放量因溶剂和光泽度而变化几个数量级。油性涂料的排放量最高（>105微克/克涂料），而低光泽内墙涂料（无光、缎光和半光）的排放量均为102微克/克涂料。室内涂料的排放主要是挥发性有机化合物，而室外涂料排放的IVOCs比例较大。扩展排放测试表明，大多数I/VOC排放发生在油漆应用后12-24小时内，尽管有些油漆继续排放IVOC 48小时或更长时间。我们使用我们的数据来估计美国的油漆I/VOC排放量和随后的SOA生产。每年油漆I/VOC排放总量为48-155 Gg（0.15-0.48 kg/人）。这些排放每年造成2.2-7.5千兆克的SOA。油基涂料贡献了70-98%的I/VOC排放和61-99%的SOA形成，尽管它们只占涂料使用的一小部分。
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 (>105μg/g-paint), whereas low-gloss interior paints (Flat, Satin, and Semigloss) all emitted ∼102μg/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.