气候变化领域集成服务门户(CCPortal): Reactive organic carbon emissions from volatile chemical products

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DOI	10.5194/acp-21-5079-2021
	Reactive organic carbon emissions from volatile chemical products
	Seltzer K.M.; Pennington E.; Rao V.; N. Murphy B.; Strum M.; K. Isaacs K.; O. T. Pye H.
发表日期	2021
ISSN	1680-7316
起始页码	5079
结束页码	5100
卷号	21 期号:6
英文摘要	Volatile chemical products (VCPs) are an increasingly important source of anthropogenic reactive organic carbon (ROC) emissions. Among these sources are everyday items, such as personal care products, general cleaners, architectural coatings, pesticides, adhesives, and printing inks. Here, we develop VCPy, a new framework to model organic emissions from VCPs throughout the United States, including spatial allocation to regional and local scales. Evaporation of a species from a VCP mixture in the VCPy framework is a function of the compound-specific physiochemical properties that govern volatilization and the timescale relevant for product evaporation. We introduce two terms to describe these processes: evaporation timescale and use timescale. Using this framework, predicted national per capita organic emissions from VCPs are 9.5 kg per person per year (6.4 kgC per person per year) for 2016, which translates to 3.05 Tg (2.06 TgC), making VCPs a dominant source of anthropogenic organic emissions in the United States. Uncertainty associated with this framework and sensitivity to select parameters were characterized through Monte Carlo analysis, resulting in a 95% confidence interval of national VCP emissions for 2016 of 2.61-3.53 Tg (1.76-2.38 TgC). This nationwide total is broadly consistent with the U.S. EPA's 2017 National Emission Inventory (NEI); however, countylevel and categorical estimates can differ substantially from NEI values. VCPy predicts higher VCP emissions than the NEI for approximately half of all counties, with 5% of all counties having greater than 55% higher emissions. Categorically, application of the VCPy framework yields higher emissions for personal care products (150 %) and paints and coatings (25 %) when compared to the NEI, whereas pesticides (..54 %) and printing inks (..13 %) feature lower emissions. An observational evaluation indicates emissions of key species from VCPs are reproduced with high fidelity using the VCPy framework (normalized mean bias of ..13% with r D0.95). Sector-wide, the effective secondary organic aerosol yield and maximum incremental reactivity of VCPs are 5.3% by mass and 1.58 gO3g..1, respectively, indicating VCPs are an important, and likely to date underrepresented, source of secondary pollution in urban environments. © 2021 Copernicus GmbH. All rights reserved.
语种	英语
scopus关键词	air quality; atmospheric pollution; carbon emission; evaporation; organic carbon; volatile organic compound; volatilization; United States
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/247009
作者单位	Oak Ridge Inst. for Sci. and Education Postdoctoral Fellow in the Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, United States; California Institute of Technology, Pasadena, CA 91125, United States; Office of Air and Radiation, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, United States; Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, United States
推荐引用方式 GB/T 7714	Seltzer K.M.,Pennington E.,Rao V.,et al. Reactive organic carbon emissions from volatile chemical products[J],2021,21(6).
APA	Seltzer K.M..,Pennington E..,Rao V..,N. Murphy B..,Strum M..,...&O. T. Pye H..(2021).Reactive organic carbon emissions from volatile chemical products.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(6).
MLA	Seltzer K.M.,et al."Reactive organic carbon emissions from volatile chemical products".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.6(2021).