Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-7481-2017 |
Size-resolved chemical composition, effective density, and optical properties of biomass burning particles | |
Zhai, Jinghao1; Lu, Xiaohui1; Li, Ling1; Zhang, Qi1,2; Zhang, Ci1; Chen, Hong1; Yang, Xin1; Chen, Jianmin1 | |
2017-06-21 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
![]() |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:12 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | Biomass burning aerosol has an important impact on the global radiative budget. A better understanding of the correlations between the mixing states of biomass burning particles and their optical properties is the goal of a number of current studies. In this work, the effective density, chemical composition, and optical properties of rice straw burning particles in the size range of 50-400 nm were measured using a suite of online methods. We found that the major components of particles produced by burning rice straw included black carbon (BC), organic carbon (OC), and potassium salts, but the mixing states of particles were strongly size dependent. Particles of 50 nm had the smallest effective density (1.16 g cm(-3)) due to a relatively large proportion of aggregate BC. The average effective densities of 100-400 nm particles ranged from 1.35 to 1.51 g cm(-3) with OC and inorganic salts as dominant components. Both density distribution and single-particle mass spectrometry showed more complex mixing states in larger particles. Upon heating, the separation of the effective density distribution modes confirmed the external mixing state of less-volatile BC or soot and potassium salts. The size-resolved optical properties of biomass burning particles were investigated at two wavelengths (lambda = 450 and 530 nm). The single-scattering albedo (SSA) showed the lowest value for 50 nm particles (0.741 +/- 0.007 and 0.889 +/- 0.006) because of the larger proportion of BC content. Brown carbon played an important role for the SSA of 100-400 nm particles. The Angstrom absorption exponent (AAE) values for all particles were above 1.6, indicating the significant presence of brown carbon in all sizes. Concurrent measurements in our work provide a basis for discussing the physicochemical properties of biomass burning aerosol and its effects on the global climate and atmospheric environment. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000437935100001 |
WOS关键词 | LIGHT-ABSORPTION ENHANCEMENT ; BLACK CARBON ; AEROSOL-PARTICLES ; SMOKE PARTICLES ; WAVELENGTH DEPENDENCE ; AMBIENT AEROSOL ; ORGANIC AEROSOL ; SOOT AEROSOLS ; BROWN CARBON ; MIXING STATE |
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/30683 |
专题 | 地球科学 |
作者单位 | 1.Fudan Univ, Shanghai Key Lab Atmospher Particle Pollut & Prev, Dept Environm Sci & Engn, Shanghai 200433, Peoples R China; 2.Univ Calif Davis, Dept Environm Toxicol, Davis, CA 95616 USA |
推荐引用方式 GB/T 7714 | Zhai, Jinghao,Lu, Xiaohui,Li, Ling,et al. Size-resolved chemical composition, effective density, and optical properties of biomass burning particles[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(12). |
APA | Zhai, Jinghao.,Lu, Xiaohui.,Li, Ling.,Zhang, Qi.,Zhang, Ci.,...&Chen, Jianmin.(2017).Size-resolved chemical composition, effective density, and optical properties of biomass burning particles.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(12). |
MLA | Zhai, Jinghao,et al."Size-resolved chemical composition, effective density, and optical properties of biomass burning particles".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.12(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