气候变化领域集成服务门户(CCPortal): Technical note: Mismeasurement of the core-shell structure of black carbon-containing ambient aerosols by SP2 measurements

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DOI	10.1016/j.atmosenv.2020.117885
	Technical note: Mismeasurement of the core-shell structure of black carbon-containing ambient aerosols by SP2 measurements
	Zhao G.; Shen C.; Zhao C.
发表日期	2020
ISSN	1352-2310
卷号	243
英文摘要	The core diameter and shell thickness of black carbon (BC)-containing ambient aerosols directly determine their corresponding optical properties and aging processing, influencing significantly on the environment and climate change. The information of ambient particle core-shell structure is usually obtained using the single particle soot photometer (SP2) measurements. In this study, we found that the particle sizes measured by SP2 were limited within the core diameter larger than 84 nm and particle scattering diameter larger than 178 nm. There were about 34.9% of the ambient BC-containing aerosols that are mistaken for pure BC aerosols without coating. The lower limits of SP2 measurement lead to overestimation of the pure BC aerosol number concentrations and missing information of the shell thickness of BC-containing aerosol. Thus the statistical shell thickness of ambient BC-containing particles was underestimated and the aging process of ambient BC-containing aerosols derived from the SP2 measurements is misleading. © 2020 Elsevier Ltd
关键词	Black carbon Mixing states Single particle soot photometer
语种	英语
scopus关键词	Aerosols; Carbon; Climate change; Optical properties; Particle size; Aging processing; Ambient aerosols; Ambient particles; Core shell structure; Missing information; Number concentration; Particle scattering; Shell thickness; Shells (structures); ammonium sulfate; black carbon; aerosol; ambient air; black carbon; measurement method; optical property; photometer; shell; technical efficiency; aerosol; aging; Article; coating thickness; limit of detection; particle size; priority journal
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/248903
作者单位	Department of Atmospheric and Oceanic Sciences, School of Physics, Peking University, Beijing, 100871, China; College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China
推荐引用方式 GB/T 7714	Zhao G.,Shen C.,Zhao C.. Technical note: Mismeasurement of the core-shell structure of black carbon-containing ambient aerosols by SP2 measurements[J],2020,243.
APA	Zhao G.,Shen C.,&Zhao C..(2020).Technical note: Mismeasurement of the core-shell structure of black carbon-containing ambient aerosols by SP2 measurements.ATMOSPHERIC ENVIRONMENT,243.
MLA	Zhao G.,et al."Technical note: Mismeasurement of the core-shell structure of black carbon-containing ambient aerosols by SP2 measurements".ATMOSPHERIC ENVIRONMENT 243(2020).