Evolution of light absorption properties during photochemical aging of straw open burning aerosols
文献类型：期刊论文
| 作者 | Fang, Zheng3,4,5,7; Deng, Wei4,5,7 ; Wang, Xinming4,5,6,7; He, Quanfu2,3; Zhang, Yanli4,6,7; Hu, Weiwei4,7; Song, Wei4,7; Zhu, Ming4,5,7; Lowther, Scott1,4,7; Wang, Zhaoyi4,5,7
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| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
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| 出版日期 | 2022-09-10 |
| 卷号 | 838 |
| ISSN号 | 0048-9697 |
| 关键词 | Biomass burning Light absorption Lensing effect Brown carbon Bleach Radiative forcing |
| DOI | 10.1016/j.scitotenv.2022.156431 |
| 通讯作者 | Wang, Xinming(wangxm@gig.ac.cn) |
| 英文摘要 | Straw burning comprises more than 30% of all types of burned biomass in Asia, while the estimation of the emitted aerosols' direct radiative forcing effect suffers from large uncertainties, especially when atmospheric aging processes are considered. In this study, the light absorption properties of primary and aged straw burning aerosols in open fire were characterized at 7 wavelengths ranging from 370 nm to 950 nm in a chamber. The primary rice, corn and wheat straw burning bulk aerosols together had a mass absorption efficiency (MAE) of 2.43 +/- 1.36 m(2) g(-1) at 520 nm and an absorption Angstrom exponent (AAE) of 1.93 +/- 0.71, while the primary sorghum straw burning bulk aerosols were characterized by a relatively lower MAE of 0.95 +/- 0.54 m(2) g(-1) and a higher AAE of 4.80 +/- 0.68. Both the MAE and AAE of primary aerosols can be well parameterized by the (PM-BC)/BC ratio (in wt.). The MAE of black carbon (BC) increased by 11-190% during photoreactions equivalent to 16-60 h of atmospheric of aging, which was positively correlated with the (PM-BC)/(BC) ratio. The MAE of organic aerosols first slightly increased or leveled off, and then decreased. Specifically, at 370 nm, the first growth/plateau stage lasted until OH exposure reached 0.47-1.29 x 10(11) molecule cm(-3) s, and the following period exhibited decay rates of 1.0-2.8 x 10(-12) cm(3) molecule(-1) s(-1) against the OH radical, corresponding to half-lives of 46-134 h in a typical ambient condition. During photoreactions, competition among the lensing effect, growth/bleach of organic chromophores, and particle mass and size growth complicated the evolution of the direct radiative forcing effect. It is concluded that rice and corn straw burning aerosols maintained a warming effect after aging, while the cooling effect of fresh sorghum straw burning aerosols increased with aging. |
| WOS关键词 | SECONDARY ORGANIC AEROSOL ; BROWN CARBON AEROSOL ; BLACK CARBON ; AIR-POLLUTION ; OPTICAL-PROPERTIES ; VEHICLE EXHAUST ; AMBIENT BLACK ; SMOG CHAMBER ; MIXING STATE ; FOSSIL-FUEL |
| 资助项目 | National Natural Science Foundation of China[41961144029] ; NSFC-ISF joint research program (ISF)[3205/19] ; Chinese Academy of Sciences[QYZDJ-SSW-DQC032] ; Department of Science and Technology of Guang-dong Province[2020B1212060053/2017BT01Z134/2019B121205006] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000809826400013 |
| 资助机构 | National Natural Science Foundation of China ; NSFC-ISF joint research program (ISF) ; Chinese Academy of Sciences ; Department of Science and Technology of Guang-dong Province |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/129566]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Wang, Xinming |
| 作者单位 | 1.Univ Lancaster, Lancaster Environm Ctr, Lancaster LA1 4YQ, England 2.Forschungszentrum Julich, Inst Energy & Climate Res, Troposphere, D-52425 Julich, Germany 3.Weizmann Inst Sci, Dept Earth & Planetary Sci, Rehovot 76100, Israel 4.Guangzhou Inst Geochem, Chinese Acad Sci, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 6.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Reg Atmospher Environm, Xiamen 361021, Peoples R China 7.Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Key Lab Environm Protect & Resources Uti, Guangzhou 510640, Peoples R China 8.CNRS, Inst Rech Catalyse & Environm Lyon IRCELYON, UMR5256, F-69626 Villeurbanne, France 9.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Environm Opt & Technol, Hefei 230031, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fang, Zheng,Deng, Wei,Wang, Xinming,et al. Evolution of light absorption properties during photochemical aging of straw open burning aerosols[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2022,838. |
| APA | Fang, Zheng.,Deng, Wei.,Wang, Xinming.,He, Quanfu.,Zhang, Yanli.,...&Rudich, Yinon.(2022).Evolution of light absorption properties during photochemical aging of straw open burning aerosols.SCIENCE OF THE TOTAL ENVIRONMENT,838. |
| MLA | Fang, Zheng,et al."Evolution of light absorption properties during photochemical aging of straw open burning aerosols".SCIENCE OF THE TOTAL ENVIRONMENT 838(2022). |
入库方式： OAI收割
来源：合肥物质科学研究院
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