气候变化领域集成服务门户(CCPortal): Investigation of physico-chemical characteristics and associated CCN activation for different combustion sources through Chamber experiment approach

CCPortal

DOI	10.1016/j.atmosenv.2021.118726
	Investigation of physico-chemical characteristics and associated CCN activation for different combustion sources through Chamber experiment approach
	Mukherjee S.; Anil Kumar V.; Patil R.D.; Meena G.S.; Buchunde P.; Waghmare V.; Deshmukh S.; Dhavale V.; Ray A.; Panicker A.S.; Sonbawne S.M.; Safai P.D.; Pandithurai G.
发表日期	2021
ISSN	1352-2310
卷号	266
英文摘要	The aerosol physico-chemical properties along with their CCN activation characteristics were studied for different combustion source types such as Diesel Generator (DG), wood, leaf, charcoal, grass and cow dung through chamber-based experiment. Aethalometer (AE-33), High resolution time-of-flight aerosol mass spectrometer (HR-TOF-AMS), scanning mobility particle sizer (SMPS) and cloud condensation nuclei (CCN) counter were connected in line to derive the absorption properties, chemical composition, size distribution and CCN number concentrations respectively. Angstrom absorption exponent (AAE) and Angstrom absorption exponent ratio (AAER) were estimated utilizing the Aethalometer data. The analysis reveals that the DG emission was associated with the lowest AAE value (0.92) and the AAE value was highest for cow dung emissions (2.15). AAER, a ratio of AAE at longer wavelengths (660–950 nm) to smaller wavelengths (370-660 nm), showed value < 1 for most of biomass burning types, whereas, the AAER value was >1 for DG emission. The chemical composition data reveals that the organics contribute more than 90% to most of the combustion sources except charcoal, for which the organic contribution was only 78%. High-resolution data analysis reveals that leaf burning was associated with the highest f44 fraction indicating the emitted organic aerosols contain more oxygen. The chemical composition derived hygroscopicity parameter (κ) was estimated to be highest for charcoal emissions and lowest for diesel and cooking emissions. Hygroscopicity parameter (κ) was also evaluated utilizing CCN and SMPS data. The CCN activation and size distribution analysis revealed that the CCN activation of cow dung was highest at 0.1% and 0.3% SS, this is associated with the higher geometric mean diameter (GMD) of emitted aerosols, indicating the importance of size compared to the chemical composition. The activation fraction of charcoal emission was found to be higher than DG emission in these super-saturations, indicating the importance of hygroscopicity in addition to size for governing the CCN activation when the GMD is on the lower side. © 2021 Elsevier Ltd
关键词	AAE CCN Chamber experiment HR-Tof-AMS Hygroscopicity Wood burning
语种	英语
scopus关键词	Activation analysis; Aerosols; Charcoal; Combustion; Diesel engines; Particle size analysis; Size distribution; Angstrom absorption exponent; Chamber experiments; Chemical compositions; Cloud condensation nuclei; Combustion sources; Cow dung; Diesel generators; HR-tof-AMS; Hygroscopicity; Wood burning; Chemical activation; charcoal; biochemical composition; biomass burning; combustion; experimental design; physicochemical property; pollutant source; absorption; aerosol; Article; biomass; chemical composition; cloud condensation nuclei; combustion; concentration (parameter); experimental study; grass; nonhuman; particle size; physical chemistry; plant leaf; time of flight mass spectrometry; wettability; wood
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248207
作者单位	Indian Institute of Tropical Meteorology, Ministry of Earth sciences, Pune, India; Savitribai Phule Pune University, Pune, India
推荐引用方式 GB/T 7714	Mukherjee S.,Anil Kumar V.,Patil R.D.,et al. Investigation of physico-chemical characteristics and associated CCN activation for different combustion sources through Chamber experiment approach[J],2021,266.
APA	Mukherjee S..,Anil Kumar V..,Patil R.D..,Meena G.S..,Buchunde P..,...&Pandithurai G..(2021).Investigation of physico-chemical characteristics and associated CCN activation for different combustion sources through Chamber experiment approach.ATMOSPHERIC ENVIRONMENT,266.
MLA	Mukherjee S.,et al."Investigation of physico-chemical characteristics and associated CCN activation for different combustion sources through Chamber experiment approach".ATMOSPHERIC ENVIRONMENT 266(2021).