Source profiles of molecular structure and light absorption of PM2.5 brown carbon from residential coal combustion emission in Northwestern China

doi:10.1016/j.envpol.2022.118866

CORC > 地球环境研究所 > 中国科学院地球环境研究所 > 粉尘与环境研究室

	Source profiles of molecular structure and light absorption of PM2.5 brown carbon from residential coal combustion emission in Northwestern China
	Zhang, Qian 5,6; Li, Ziyi 6; Shen, Zhenxing 1,5; Zhang, Tian 5; Zhang, Yujie 6; Sun, Jian 5; Zeng, Yaling 4; Xu, Hongmei 5; Wang, Qiyuan 3; Ho, Steven Sai Hang 2
刊名	ENVIRONMENTAL POLLUTION
	2022-04-15
卷号	299 页码:9
关键词	brown carbon Optical properties Molecular compositions Residential coal combustion
ISSN号	0269-7491
DOI	10.1016/j.envpol.2022.118866
通讯作者	Shen, Zhenxing(zxshen@mail.xjtu.edu.cn)
英文摘要	Residential coal combustion is a prominent source of brown carbon (BrC) aerosols, but knowledge of their molecular structures and optical absorption were limited, which have notable used in ambient BrC source identification and radiative forcing calculation. In this study, the Fourier transform-ion cyclotron resonance mass spectrometry combined with partial least squares regression analysis as well as Fourier transform infrared spectroscopy analysis were used to insight the molecular compounds and structures of BrC from anthracite and bituminous coal combustions between traditional and improved stoves. The absorption angstrom ngstro center dot m exponents (AAE) and mass absorption efficiency (MAE) values for the BrC emitted from the combinations of bituminous were both 1.2-2.5 times lower than those of anthracite, interpreting that the BrC from the anthracite emissions had greater light-absorbing capacity. In contrast, the emission factor of light absorption (EFAbs) at 365 nm for the bituminous coal combusted in the traditional stove was the highest among all the tested scenarios, which revealed that the incomplete combustion of bituminous coal could emit more BrC. It was noted that primary BrC emitted from the coal combustion with traditional stoves contains higher aromaticity groups of C-C and C=O and higher S containing organics, whereas more aliphatic groups were found in BrC using the improved stoves. N-containing (CHON and CHONS) compounds were dominated in the total molecular formula of BrC, whereas the sum of CHON and CHO groups had high double-bond equivalent (DBE) values contributed 53.5%-87.1% to the total BrC absorption. Moreover, for CHOS, the lowest of estimated molecular absorption, DBE, and DBE/C should attribute to the non-chromophoric or weak absorptive S-containing compounds. This study supplied an effective evaluation method to compare BrC emissions and their absorption for coal combustion on regional scale.
资助项目	Natural Science Foundation of China, China[42007193] ; Natural Science Foundation of China, China[41877383] ; Natural Science Foundation of China, China[21661132005] ; SKLLQG, Chinese Academy of Sciences, China[SKLLQG 2028] ; Youth Talents Lifting Project of Science and Technology Association in Shaanxi Provinces Universities and Colleges, China[20190703]
WOS关键词	HUMIC-LIKE SUBSTANCES ; FT-ICR-MS ; DISSOLVED ORGANIC-MATTER ; LEAST-SQUARES REGRESSION ; OPTICAL-PROPERTIES ; BIOMASS MATERIALS ; AEROSOL CONSTITUENTS ; PARTICULATE MATTER ; GUANZHONG PLAIN ; MASS
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000758453300008
资助机构	Natural Science Foundation of China, China ; SKLLQG, Chinese Academy of Sciences, China ; Youth Talents Lifting Project of Science and Technology Association in Shaanxi Provinces Universities and Colleges, China
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/17523]
专题	地球环境研究所_粉尘与环境研究室
通讯作者	Shen, Zhenxing
作者单位	1.Northeast Agr Univ, Int Joint Res Ctr Persistent Tox Subst IJRC PTS, Sch Water Conservancy & Civil Engn, Harbin, Peoples R China 2.Desert Res Inst, Div Atmospher Sci, Reno, NV 89512 USA 3.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, SKLLQG, Xian, Peoples R China 4.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Shenzhen, Peoples R China 5.Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian 710049, Peoples R China 6.Xian Univ Architecture & Technol, Key Lab Northwest Resource Environm & Ecol, MOE, Xian 710055, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Qian,Li, Ziyi,Shen, Zhenxing,et al. Source profiles of molecular structure and light absorption of PM2.5 brown carbon from residential coal combustion emission in Northwestern China[J]. ENVIRONMENTAL POLLUTION,2022,299:9.
APA	Zhang, Qian.,Li, Ziyi.,Shen, Zhenxing.,Zhang, Tian.,Zhang, Yujie.,...&Cao, Junji.(2022).Source profiles of molecular structure and light absorption of PM2.5 brown carbon from residential coal combustion emission in Northwestern China.ENVIRONMENTAL POLLUTION,299,9.
MLA	Zhang, Qian,et al."Source profiles of molecular structure and light absorption of PM2.5 brown carbon from residential coal combustion emission in Northwestern China".ENVIRONMENTAL POLLUTION 299(2022):9.