IEECAS OpenIR  > 粉尘与环境研究室
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
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
Volume622-623Issue:2018Pages:244-251
SubtypeArticle
AbstractIn 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.
KeywordBrown Carbon Biomass Burning Size Distribution Absorption Coefficient Mass Absorption Coefficient
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1016/j.scitotenv.2017.11.353
WOS KeywordSOUTHEASTERN UNITED-STATES ; LIGHT-ABSORPTION ; ORGANIC-CARBON ; SEASONAL-VARIATIONS ; AEROSOL ; WINTER ; WATER ; FINE ; XIAN ; PARTICLES
Indexed BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000426349000027
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/5186
Collection粉尘与环境研究室
Affiliation1.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
Recommended Citation
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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