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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
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
DOI10.1016/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
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
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
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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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