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  Origins of black carbon from anthropogenic emissions and open biomass burning transported to Xishuangbanna, Southwest China

Liu, X., Wang, S., Zhang, Q., Jiang, C., Liang, L., Tang, S., Zhang, X., Han, X., & Zhu, L. (2023). Origins of black carbon from anthropogenic emissions and open biomass burning transported to Xishuangbanna, Southwest China. Journal of Environmental Sciences, 125, 277-289. doi:10.1016/j.jes.2021.12.020.

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アイテムのパーマリンク: https://hdl.handle.net/21.11116/0000-000D-AD46-2 版のパーマリンク: https://hdl.handle.net/21.11116/0000-000D-AD47-1
資料種別: 学術論文

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 作成者:
Liu, Xuyan, 著者
Wang, Siwen1, 著者           
Zhang, Qianqian, 著者
Jiang, Chunlai, 著者
Liang, Linlin, 著者
Tang, Shihao, 著者
Zhang, Xingying, 著者
Han, Xiuzhen, 著者
Zhu, Lin, 著者
所属:
1Multiphase Chemistry, Max Planck Institute for Chemistry, Max Planck Society, ou_1826290              

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 要旨: Daytime HONO photolysis is an important source of atmospheric hydroxyl radicals (OH). Knowledge of HONO formation chemistry under typical haze conditions, however, is still limited. In the Multiphase chemistry experiment in Fogs and Aerosols in the North China Plain in 2018, we investigated the wintertime HONO formation and its atmospheric implications at a rural site Gucheng. Three different episodes based on atmospheric aerosol loading levels were classified: clean periods (CPs), moderately polluted periods (MPPs) and severely polluted periods (SPPs). Correlation analysis revealed that HONO formation via heterogeneous conversion of was more efficient on aerosol surfaces than on ground, highlighting the important role of aerosols in promoting HONO formation. Daytime HONO budget analysis indicated a large missing source (with an average production rate of 0.66 ± 0.26, 0.97 ± 0.47 and 1.45 ± 0.55 ppbV/hr for CPs, MPPs and SPPs, respectively), which strongly correlated with photo-enhanced reactions ( heterogeneous reaction and particulate nitrate photolysis). Average OH formation derived from HONO photolysis reached up to 0.92 ± 0.71, 1.75 ± 1.26 and 1.82 ± 1.47 ppbV/hr in CPs, MPPs and SPPs respectively, much higher than that from photolysis (i.e., 0.004 ± 0.004,0.006 ± 0.007 and 0.0035 ± 0.0034 ppbV/hr). Such high OH production rates could markedly regulate the atmospheric oxidation capacity and hence promote the formation of secondary aerosols and pollutants.

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言語: eng - English
 日付: 2023-03
 出版の状態: オンラインで出版済み
 ページ: -
 出版情報: -
 目次: -
 査読: -
 識別子(DOI, ISBNなど): DOI: 10.1016/j.jes.2021.12.020
 学位: -

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出版物 1

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出版物名: Journal of Environmental Sciences
  出版物の別名 : JES
種別: 学術雑誌
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出版社, 出版地: Amsterdam : Elsevier
ページ: - 巻号: 125 通巻号: - 開始・終了ページ: 277 - 289 識別子(ISBN, ISSN, DOIなど): ISSN: 1001-0742
該当なし: /journals/resource/1001-0742