Analysis of the National Air Pollutant Emissions Inventory (CAPSS 2017) Data and Assessment of Emissions based on Air Quality Modeling in the Republic of Korea

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2021-12-01 DOI:10.5572/ajae.2021.064

Seong-woo Choi, Chang-han Bae, Hyung-cheon Kim, Taekyu Kim, Hyang-kyeong Lee, Seung-joo Song, Jeong-pil Jang, Kyoung-bin Lee, Su-ah Choi, Hyeon-ji Lee, Yunseo Park, Seo-yeon Park, Young-min Kim, Chul Yoo

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Abstract

According to the 2017 National Air Pollutant Emissions Inventory (NEI), air pollutant emissions in the Republic of Korea comprised 817,420 metric tons (hereafter tons) of CO, 1,189,800 tons of NO_x, 315,530 tons of SO_x, 592,582 tons of TSP, 218,476 tons of PM₁₀, 91,731 tons of PM_2.5, 15,555 tons of black carbon (BC), 1,047,585 tons of VOCs, and 308,298 tons of NH₃. Emissions of the 13 first-level emission source categories, which constitute the NEI, were estimated and, based on their characteristics, the emission source categories were grouped into five sectors (energy, industry, road, non-road, and everyday activities and others). In addition, the contributions of primary PM_2.5 and its four precursors (NO_x, SO_x, VOCs, and NH₃) to the 2017 NEI were assessed in this study. The emission contributions of NO_x to the NEI were 36.5% for the road sector, which was the highest of those of all the air pollutants for this sector; NO_x emissions for this sector were 4.2% lower than those in the previous year. The emission contributions of SO_x and PM_2.5 to the NEI were higher than those of the other air pollutants for the industry sector; SO_x and PM_2.5 emissions for this sector decreased by 9.8% and 19.7%, respectively, compared with those in the previous year. The emission contributions of VOCs and NH₃ to the NEI were 65.3% and 83.9% for the everyday activities and others sector, respectively, higher than those of the other air pollutants for this sector; VOCs and NH₃ emissions for this sector increased by 0.8% and 2.9%, respectively, compared with those in the previous year. A three-dimensional (3D) chemical transport modeling system was used to validate the emission estimates. These data suggest that simulated SO_x emissions were overestimated in areas with dense large-scale industrial complexes, such as Jeollanam-do, Gyeongsangbuk-do, and Ulsan, and that simulated NO_x emissions were overestimated in Seoul, Incheon, and Jeollanam-do.

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基于大韩民国空气质量模型的国家空气污染物排放清单（CAPSS 2017）数据分析和排放评估

根据 2017 年国家大气污染物排放清单（NEI），大韩民国的大气污染物排放量包括 817,420 公吨（以下简称吨）的 CO、1,189,800 吨的 NOx、315,530 吨的 SOx、592,582 吨的 TSP、218,476 吨的 PM10、91,731 吨的 PM2.5、15,555 吨的黑碳（BC）、1,047,585 吨的 VOC 和 308,298 吨的 NH3。估算了构成 NEI 的 13 个一级排放源类别的排放量，并根据其特征将排放源类别分为五个部门（能源、工业、道路、非道路和日常活动及其他）。此外，本研究还评估了原生 PM2.5 及其四种前体物（氮氧化物、硫氧化物、挥发性有机物和 NH3）对 2017 年 NEI 的贡献。道路行业的氮氧化物对近净空气指数的排放贡献率为 36.5%，是该行业所有大气污染物中最高的；该行业的氮氧化物排放量比上一年减少了 4.2%。工业部门的 SOx 和 PM2.5 对 NEI 的排放贡献率高于其他大气污染物；该部门的 SOx 和 PM2.5 排放量与上年相比分别下降了 9.8%和 19.7%。日常活动及其他行业的 VOCs 和 NH3 排放对 NEI 的贡献率分别为 65.3% 和 83.9%，高于该行业的其他空气污染物；该行业的 VOCs 和 NH3 排放与上年相比分别增加了 0.8% 和 2.9%。三维（3D）化学传输模型系统被用来验证排放估算值。这些数据表明，在全罗南道、庆尚北道和蔚山等大型工业综合体密集的地区，模拟的硫氧化物排放量被高估了；在首尔、仁川和全罗南道，模拟的氮氧化物排放量被高估了。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.