Light Absorption Properties of Organic Aerosol from Wood Pyrolysis: Measurement Method Comparison and Radiative Implications
文献类型：期刊论文
| 作者 | Li, Xinghua1; Xiao, Maodong1; Xu, Xuezhe2 ; Zhou, Jiacheng2; Yang, Kaiqiang1; Wang, Zihao1; Zhang, Weijun2; Hopke, Philip K.3,4; Zhao, Weixiong2
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| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
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| 出版日期 | 2020-06-16 |
| 卷号 | 54 |
| ISSN号 | 0013-936X |
| DOI | 10.1021/acs.est.0c01475 |
| 通讯作者 | Li, Xinghua(lixinghua@buaa.edu.cn) ; Zhao, Weixiong(wxzhao@aiofm.ac.cn) |
| 英文摘要 | Growing evidence indicates that organic aerosol (OA) is a significant absorber of solar radiation. Such absorptive OA is known as "brown carbon" (BrC). However, a formal analytical method for BrC is currently lacking although several methods have been applied to determine its absorption properties. Reported imaginary refractive index (k(OA)) values from various combustion sources span 2 orders of magnitude. Measurement methods are an important factor affecting this k(OA) variation. In this work, isolated OA from wood pyrolysis was used to compare four methods to determine absorbing properties of OA. The generated aerosol was lognormally distributed, spherical, and nearly pure organic matter. Optical closure was considered as the reference method. k(OA) calculated from the extract bulk light absorbance measurement was comparable to that determined by optical closure. k(OA) and mass absorption cross section obtained by online and offline filter-based transmission measurements were similar, but 3.5 to 5.0 times greater than those determined by optical closure. Absorption Angstrom Exponents determined by the four methods were comparable and ranged from 6.1 to 6.8. A clear-sky radiative transfer model implied that using the optical parameters derived from different methods in the full climate model could produce different radiative impacts of primary OA emissions. |
| WOS关键词 | BROWN CARBON ; BLACK CARBON ; AETHALOMETER ; WATER ; COMBUSTION ; ATMOSPHERE ; EMISSIONS ; EXTRACTS ; MODEL |
| 资助项目 | National Natural Science Foundation of China[41775121] ; National Natural Science Foundation of China[41575119] ; National Natural Science Foundation of China[1908085QD157] |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000542229600015 |
| 出版者 | AMER CHEMICAL SOC |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/43163]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Li, Xinghua; Zhao, Weixiong |
| 作者单位 | 1.Beihang Univ, Sch Space & Environm, Beijing 100191, Peoples R China 2.Chinese Acad Sci, Lab Atmospher Physicochem, Anhui Inst Opt & Fine Mech, Hefei 230031, Anhui, Peoples R China 3.Univ Rochester, Sch Med & Dent, Dept Publ Hlth Sci, Rochester, NY 14642 USA 4.Clarkson Univ, Ctr Air Resources Engn & Sci, Potsdam, NY 13699 USA |
| 推荐引用方式 GB/T 7714 | Li, Xinghua,Xiao, Maodong,Xu, Xuezhe,et al. Light Absorption Properties of Organic Aerosol from Wood Pyrolysis: Measurement Method Comparison and Radiative Implications[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2020,54. |
| APA | Li, Xinghua.,Xiao, Maodong.,Xu, Xuezhe.,Zhou, Jiacheng.,Yang, Kaiqiang.,...&Zhao, Weixiong.(2020).Light Absorption Properties of Organic Aerosol from Wood Pyrolysis: Measurement Method Comparison and Radiative Implications.ENVIRONMENTAL SCIENCE & TECHNOLOGY,54. |
| MLA | Li, Xinghua,et al."Light Absorption Properties of Organic Aerosol from Wood Pyrolysis: Measurement Method Comparison and Radiative Implications".ENVIRONMENTAL SCIENCE & TECHNOLOGY 54(2020). |
入库方式： OAI收割
来源：合肥物质科学研究院
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