Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-10333-2017 |
Ageing and hygroscopicity variation of black carbon particles in Beijing measured by a quasi-atmospheric aerosol evolution study (QUALITY) chamber | |
Peng, Jianfei1,2; Hu, Min1,3; Guo, Song1,2; Du, Zhuofei1; Shang, Dongjie1; Zheng, Jing1; Zheng, Jun2; Zeng, Limin1; Shao, Min1; Wu, Yusheng1; Collins, Don2; Zhang, Renyi1,2 | |
2017-09-04 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:17 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | Measurements of ageing and hygroscopicity variation of black carbon (BC) particles in Beijing were conducted using a 1.2 m(3) quasi-atmospheric aerosol evolution study (QUALITY) chamber, which consisted of a bottom flow chamber through which ambient air was pulled continuously and an upper reaction chamber where ageing of BC particles occurred. Within the reaction chamber, transmission of the solar ultraviolet irradiation was approximately 50-60 %, wall loss of primary gaseous pollutants was negligible, and BC exhibited a half-lifetime of about 3-7 h. Typically, equilibrium for the primary gases, temperature and relative humidity between the reaction chamber and ambient air was established within 1 h. Rapid growth of BC particles occurred, with an average total growth of 77 +/- 33 nm and average growth rate of 26 +/- 11 nm h(-1). Secondary organic aerosols (SOA) accounted for more than 90% of the coating mass. The O/C ratio of SOA was 0.5, lower than the ambient level. The hygroscopic growth factor of BC particles decreased slightly with an initial thin coating layer because of BC reconstruction, but subsequently increased to 1.06-1.08 upon further ageing. The kappa (kappa) values for BC particles and coating materials were calculated as 0.035 and 0.040 at the subsaturation and supersaturation conditions, respectively, indicating low hygroscopicity of coated SOA on BC particles. Hence, our results indicate that initial photochemical ageing of BC particles leads to considerable modifications to morphology and optical properties but does not appreciably alter the particle hygroscopicity in Beijing. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000409121500002 |
WOS关键词 | IONIZATION MASS-SPECTROMETRY ; SINGLE-PARAMETER REPRESENTATION ; CONDENSATION NUCLEUS ACTIVITY ; ENHANCED LIGHT-ABSORPTION ; OH-INITIATED OXIDATION ; ORGANIC AEROSOLS ; SULFURIC-ACID ; HETEROGENEOUS REACTIONS ; MOBILITY RELATIONSHIP ; CHEMICAL-COMPOSITION |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/21660 |
专题 | 地球科学 |
作者单位 | 1.Peking Univ, Coll Environm Sci & Engn, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100871, Peoples R China; 2.Texas A&M Univ, Dept Atmospher Sci, College Stn, TX 77843 USA; 3.Peking Univ, Beijing Innovat Ctr Engn Sci & Adv Technol, Beijing 100871, Peoples R China |
推荐引用方式 GB/T 7714 | Peng, Jianfei,Hu, Min,Guo, Song,et al. Ageing and hygroscopicity variation of black carbon particles in Beijing measured by a quasi-atmospheric aerosol evolution study (QUALITY) chamber[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(17). |
APA | Peng, Jianfei.,Hu, Min.,Guo, Song.,Du, Zhuofei.,Shang, Dongjie.,...&Zhang, Renyi.(2017).Ageing and hygroscopicity variation of black carbon particles in Beijing measured by a quasi-atmospheric aerosol evolution study (QUALITY) chamber.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(17). |
MLA | Peng, Jianfei,et al."Ageing and hygroscopicity variation of black carbon particles in Beijing measured by a quasi-atmospheric aerosol evolution study (QUALITY) chamber".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.17(2017). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论