Anthropogenic secondary organic aerosol and ozone production from asphalt-related emissions
Anthropogenic secondary organic aerosol and ozone production from asphalt-related emissions
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沥青相关排放物产生的人为二次有机气溶胶和臭氧
DOI：
10.1039/d3ea00066d
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Mason, Rich
中科院分区：
文献类型：
--
作者：
Seltzer, Karl M.;Rao, Venkatesh;Pye, Havala O.;Murphy, Benjamin N.;Place, Bryan K.;Khare, Peeyush;Gentner, Drew R.;Allen, Christine;Cooley, David;Mason, Rich
液体沥青是建筑活动中常用的石油衍生物质。最近的研究发现，沥青中挥发性较低的活性有机碳是二次有机气溶胶 (SOA) 前体排放的一个被忽视的来源。在这里，我们利用潜在的排放估算和使用数据来构建美国与沥青相关的排放的自下而上的清单。 2018 年，我们估计热拌沥青、温拌沥青、乳化沥青、稀释沥青和屋顶沥青产生约 380 Gg (317 Gg–447 Gg) 的有机化合物排放。使用光化学模型估算了这些排放对美国本土人为 SOA 和臭氧的影响。在几个主要城市，与沥青相关的排放会使模拟的夏季 SOA 平均增加 0.1–0.2 μg m−3（SOA 的 2–4%），并且在某些日子的中午可能会达到 0.5 μg m−3。沥青相关排放对模拟臭氧的影响通常很小（∼0.1 ppb）。我们估计，与沥青铺路相关的排放量是近 50 年前的一半，这主要归功于减少沥青用量的共同努力。如果道路移动排放持续几十年来的下降，来自蒸发和非道路移动源的城市 SOA 贡献的相对重要性将继续增长。
Liquid asphalt is a petroleum-derived substance commonly used in construction activities. Recent work has identified lower volatility, reactive organic carbon from asphalt as an overlooked source of secondary organic aerosol (SOA) precursor emissions. Here, we leverage potential emission estimates and usage data to construct a bottom-up inventory of asphalt-related emissions in the United States. In 2018, we estimate that hot-mix, warm-mix, emulsified, cutback, and roofing asphalt generated ∼380 Gg (317 Gg–447 Gg) of organic compound emissions. The impacts of these emissions on anthropogenic SOA and ozone throughout the contiguous United States are estimated using photochemical modeling. In several major cities, asphalt-related emissions can increase modeled summertime SOA, on average, by 0.1–0.2 μg m−3 (2–4% of SOA) and may reach up to 0.5 μg m−3 at noontime on select days. The influence of asphalt-related emissions on modeled ozone are generally small (∼0.1 ppb). We estimate that asphalt paving-related emissions are half of what they were nearly 50 years ago, largely due to the concerted efforts to reduce emissions from cutback asphalts. If on-road mobile emissions continue their multidecadal decline, contributions of urban SOA from evaporative and non-road mobile sources will continue to grow in relative importance.
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影响因子：
5.1
作者：
Murphy BN;Nolte CG;Sidi F;Bash JO;Appel KW;Jang C;Kang D;Kelly J;Mathur R;Napelenok S;Pouliot G;Pye HOT
通讯作者：
Pye HOT
影响因子：
5.1
作者：
Bash, Jesse O.;Baker, Kirk R.;Beaver, Melinda R.
通讯作者：
Beaver, Melinda R.
影响因子：
4.9
作者：
Appel, K. Wyat;Gilliam, Robert C.;Howard, Steven C.
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影响因子：
7.4
作者：
Gundla, Akshay;Underwood, B. Shane
通讯作者：
Underwood, B. Shane
影响因子：
6.3
作者：
Seltzer KM;Pennington E;Rao V;Murphy BN;Strum M;Isaacs KK;Pye HOT
通讯作者：
Pye HOT