| Title | Effects of biomass burning and photochemical oxidation on the black carbon mixing state and light absorption in summer season |
| Authors | Wang, Tiantian Zhao, Gang Tan, Tianyi Yu, Ying Tang, Rongzhi Dong, Huabin Chen, Shiyi Li, Xin Lu, Keding Zeng, Limin Gao, Yaqin Wang, Hongli Lou, Shengrong Liu, Dantong Hu, Min Zhao, Chunsheng Guo, Song |
| Affiliation | Peking Univ, Coll Environm Sci & Engn, State Key Joint Lab Environm Simulat & Pollut Con, Int Joint Lab Reg Pollut Control,Minist Educ IJRC, Beijing 100871, Peoples R China Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Atmospher Environm & Equip, Nanjing, Peoples R China Peking Univ, Sch Phys, Dept Atmospher & Ocean Sci, Beijing 100871, Peoples R China Shanghai Acad Environm Sci, State Environm Protect Key Lab Format & Prevent U, Shanghai 200233, Peoples R China Zhejiang Univ, Sch Earth Sci, Dept Atmospher Sci, Hangzhou 310027, Zhejiang, Peoples R China Paul Scherrer Inst, Lab Atmospher Chem, CH-5232 Villigen, Switzerland |
| Issue Date | 1-Mar-2021 |
| Publisher | ATMOSPHERIC ENVIRONMENT |
| Abstract | To investigate the effects of biomass burning and photochemical oxidation on the black carbon (BC) mixing state and light absorption, a tandem centrifugal particle mass analyzer (CPMA) and single-particle soot photometer (SP2) system was used to measure ambient fine particulate BC during EXPLORE-YRD 2018 campaign (EXPeriment on the eLucidation of the atmospheric Oxidation capacity and aerosol foRmation, and their Effects in Yangtze River Delta). The mass ratio (M-R) of the non-BC coating to BC core, a morphology-independent parameter to quantify the mixing state of BC-containing aerosols, is derived. Two types of periods were identified, namely non-significant biomass-burning period (NB), and enhanced biomass burning period (EB). The M-R was higher during EB (2.3 +/- 0.5), compared with during the NB (2.0 +/- 0.5). M-R showed bimodal diurnal variation with peaks in the early morning and early afternoon, mainly due to the biomass burning and photochemical processes, respectively. The light-absorbing enhancement ranged from 1.0 to 1.19 when MR was from 1.4 to 3.4. The relationship of rBC mixing state and its optical properties was parameterized, which can further be used in the regional model. |
| URI | http://hdl.handle.net/20.500.11897/609337 |
| ISSN | 1352-2310 |
| DOI | 10.1016/j.atmosenv.2021.118230 |
| Indexed | SCI(E) |
| Appears in Collections: | 环境科学与工程学院 环境模拟与污染控制国家重点联合实验室 物理学院 |
