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DOI	10.1016/j.atmosres.2020.104958
	Composition and sources of aerosol organic matter in a highly anthropogenic influenced semi-enclosed bay: Insights from excitation-emission matrix spectroscopy and isotopic evidence
	Wu Y.; Huang X.; Jiang Z.; Liu S.; Cui L.
发表日期	2020
ISSN	0169-8095
卷号	241
英文摘要	Organic matter in aerosols is an important allochthonous source of organic carbon and nitrogen in coastal waters. In this study, we investigated the constituents, sources, and formation process of organic matter in aerosols using excitation−emission matrix (EEM) spectroscopy and stable isotopes. The concentration of aerosol organic matter (AOM), including particle organic matter (POM) and water-soluble organic matter (WSOM), were higher in the northeast monsoon (NEM) season than in the southwest monsoon and typhoon (SWM) season due to the considerable contribution of organic aerosols from the Pearl River Delta (PRD), eastern mainland China and local emissions. The results of stable isotope (δ13C and δ15N) combined with a MixSIAR model showed that fossil fuel combustion (vehicle exhausts and coal combustion) was the most important source of aerosol organic matter, which contributed more than 60% of the total AOM input, throughout the year. The EEM spectroscopy results indicated that protein-like and non-N-containing species were the primary components of aerosol organic matter, while highly-oxygenated species, mostly humic-like substances (HULIS), were identified only in the NEM season. The highly-oxygenated species in the NEM season may be attributed to the formation of secondary organic aerosols induced by higher ozone levels and increased organic radical through the severe pollution in this season. © 2020
关键词	Aerosols Air pollution Atmospheric thermodynamics Biogeochemistry Chemical analysis Coal combustion Elementary particle sources Fossil fuels Isotopes River pollution Allochthonous sources Carbon and nitrogen Excitation emission matrices Fossil fuel combustion Humic-like substances Secondary organic aerosols Stable isotopes Water-soluble organic matter Organic carbon aerosol composition carbon isotope combustion fossil fuel isotopic composition nitrogen isotope organic matter spectroscopy stable isotope
语种	英语
来源机构	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/132468
推荐引用方式 GB/T 7714	Wu Y.,Huang X.,Jiang Z.,et al. Composition and sources of aerosol organic matter in a highly anthropogenic influenced semi-enclosed bay: Insights from excitation-emission matrix spectroscopy and isotopic evidence[J]. Atmospheric Research,2020,241.
APA	Wu Y.,Huang X.,Jiang Z.,Liu S.,&Cui L..(2020).Composition and sources of aerosol organic matter in a highly anthropogenic influenced semi-enclosed bay: Insights from excitation-emission matrix spectroscopy and isotopic evidence.,241.
MLA	Wu Y.,et al."Composition and sources of aerosol organic matter in a highly anthropogenic influenced semi-enclosed bay: Insights from excitation-emission matrix spectroscopy and isotopic evidence".241(2020).