Seasonal variations of mass absorption efficiency of elemental carbon in PM2.5 in urban Guangzhou of South China
文献类型：期刊论文
| 作者 | Pei, Chenglei1,2,3,4; Wu, Yunfei5; Tao, Jun6; Zhang, Leiming; Zhang, Tao1,2,3,7; Zhang, Runqi1,2,3; Li, Sheng1,2,3 |
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES
 |
| 出版日期 | 2023-11-01 |
| 卷号 | 133页码:83-92 |
| 关键词 | Vehicle exhaust Non-carbonaceous aerosols Absorption enhancement Relative humidity |
| ISSN号 | 1001-0742 |
| DOI | 10.1016/j.jes.2022.04.019 |
| 英文摘要 | This study investigates seasonal variations of mass absorption efficiency of elemental carbon (MAEEC) and possible influencing factors in urban Guangzhou of South China. Mass concentrations of elemental carbon (EC) and organic carbon (OC) in PM2.5 and aerosol absorption coefficient (bap) at multi-wavelengths were simultaneously measured in four seasons of 2018-2019 at hourly resolution by a semi-continuous carbon analyzer and an aethalometer. Seasonal average mass concentrations of EC were in the range of 1.36-1.70 pgC/m3 with a lower value in summer than in the other seasons, while those of OC were in the range of 4.70-6.49 pgC/m3 with the lowest value in summer and the highest in autumn. Vehicle exhaust from local traffic was identified to be the predominant source of carbonaceous aerosols. The average aerosol absorption Angstrom exponents (AAE) were lower than 1.2 in four seasons, indicating EC and bap were closely related with vehicle exhaust. Seasonal MAEEC at 550 nm was 11.0, 8.5, 10.4 and 11.3 m 2 /g in spring, summer, autumn, and winter, respectively. High MAEEC was related with the high mass ratio of non-carbonaceous aerosols to EC and high ambient relative humidity.(c) 2023 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001139402200001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/76045]  |
| 专题 | 有机地球化学国家重点实验室 |
| 通讯作者 | Wu, Yunfei; Tao, Jun |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China 3.Guangzhou Inst Geochem, Chinese Acad Sci, State Key Lab Organ Geochem, Guangdong Key Lab Environm Protect & Resources Uti, Guangzhou 510640, Peoples R China 4.Environm Monitoring Ctr, Guangzhou Sub branch Guangdong Ecol, Guangzhou 518049, Peoples R China 5.Chinese Acad Sci, Inst Atmospher Phys, Key Lab Middle Atmosphere & Global Environm Observ, Beijing 100029, Peoples R China 6.Jinan Univ, Inst Environm & Climate Res, Guangzhou 510632, Peoples R China 7.Guangdong Ecol & Environm Monitoring Ctr, Guangzhou 510308, Peoples R China |
| 推荐引用方式 GB/T 7714 | Pei, Chenglei,Wu, Yunfei,Tao, Jun,et al. Seasonal variations of mass absorption efficiency of elemental carbon in PM2.5 in urban Guangzhou of South China[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2023,133:83-92. |
| APA | Pei, Chenglei.,Wu, Yunfei.,Tao, Jun.,Zhang, Leiming.,Zhang, Tao.,...&Li, Sheng.(2023).Seasonal variations of mass absorption efficiency of elemental carbon in PM2.5 in urban Guangzhou of South China.JOURNAL OF ENVIRONMENTAL SCIENCES,133,83-92. |
| MLA | Pei, Chenglei,et al."Seasonal variations of mass absorption efficiency of elemental carbon in PM2.5 in urban Guangzhou of South China".JOURNAL OF ENVIRONMENTAL SCIENCES 133(2023):83-92. |
入库方式： OAI收割
来源：广州地球化学研究所
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