| Optical source profiles of brown carbon in size-resolved particulate matter from typical domestic biofuel burning over Guanzhong Plain, China | |
| Lei, Yali1,2; Shen, Zhenxing1,2; Zhang, Tian1; Zhang, Qian1; Wang, Qiyuan2; Sun, Jian1; Gong, Xuesong1; Cao, Junji2; Xu, Hongmei1; Liu, Suixin2; Yang, Liu1 | |
| 2018-05-01 | |
| 发表期刊 | SCIENCE OF THE TOTAL ENVIRONMENT
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| 卷号 | 622-623期号:2018页码:244-251 |
| 文章类型 | Article |
| 摘要 | In this study, both PM2.5 and size-resolved source samples were collected from a "heated kang" and an advanced stove to investigate the optical properties of brown carbon (BrC). The light-absorption coefficient (babs), the absorption Angstrom exponent (AAE), and the mass absorption cross-section (MAC) of both water and methanol-extracted BrC were investigated. The methanol-extracted BrC (BrCmethanol) had higher light absorption than water-extracted BrC (BrCwater). The value of PM2.5 babs of BrCmethanol at 365 nm(b(abs365),methanol) dramatically decreased from 64,669.8Mm(-1) for straw burning in the "heated kang" to 1169.2 Mm(-1) formaize straw briquettes burning in the advanced stove at the same burning rate. The value of PM2.5 MAC for BrCmethanol at 365 nm (MAC(365), methanol) decreased from 1.8 m(2) g(-1) in the "heated kang" to 1.3 m(2) g-1 in the advanced stove. For smoldering burning in the "heated kang", babs365, methanol, MAC365, methanol, and K+ showed a unimodal distribution that peaked at sizes < 0.4 mu m. However, the babs365, methanol and MAC(365), methanol size distributions of the briquette burning in the advanced stove showed a bimodal pattern, with a large peak at sizes < 0.4 mu m and a minor peak in the size range of 4.7-5.8 mu m. The babs365, methanol value for sizes < 0.4 mu m (277.4 Mm(-1)) was only 12.3% compared to those obtained from the "heated kang". The burning rate did not influence the size distribution pattern of either the "heated kang" or the advanced stove. Results from a radiative model show that biomass burning is an important factor for light absorptivity, and the use of an advanced stove can reduce the simple forcing efficiency value by nearly 20% in UV bands compared to the "heated kang". Our results indicate that changing the combustion style from maize straw smoldering to briquette burning in an advanced stove can effectively reduce BrC emissions during heating seasons in rural areas of Guanzhong Plain. (C) 2017 Elsevier B.V. All rights reserved. |
| 关键词 | Brown Carbon Biomass Burning Size Distribution Absorption Coefficient Mass Absorption Coefficient |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| DOI | 10.1016/j.scitotenv.2017.11.353 |
| 关键词[WOS] | SOUTHEASTERN UNITED-STATES ; LIGHT-ABSORPTION ; ORGANIC-CARBON ; SEASONAL-VARIATIONS ; AEROSOL ; WINTER ; WATER ; FINE ; XIAN ; PARTICLES |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| WOS记录号 | WOS:000426349000027 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ieecas.cn/handle/361006/5186 |
| 专题 | 粉尘与环境研究室 |
| 作者单位 | 1.Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian 710049, Shaanxi, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian 710049, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lei, Yali,Shen, Zhenxing,Zhang, Tian,et al. Optical source profiles of brown carbon in size-resolved particulate matter from typical domestic biofuel burning over Guanzhong Plain, China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2018,622-623(2018):244-251. |
| APA | Lei, Yali.,Shen, Zhenxing.,Zhang, Tian.,Zhang, Qian.,Wang, Qiyuan.,...&Yang, Liu.(2018).Optical source profiles of brown carbon in size-resolved particulate matter from typical domestic biofuel burning over Guanzhong Plain, China.SCIENCE OF THE TOTAL ENVIRONMENT,622-623(2018),244-251. |
| MLA | Lei, Yali,et al."Optical source profiles of brown carbon in size-resolved particulate matter from typical domestic biofuel burning over Guanzhong Plain, China".SCIENCE OF THE TOTAL ENVIRONMENT 622-623.2018(2018):244-251. |
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| Optical source profi（1434KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 请求全文 | |
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