气候变化领域集成服务门户(CCPortal): Online measurement of aerosol inorganic and organic nitrogen based on thermal evolution and chemiluminescent detection

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DOI	10.1016/j.atmosenv.2021.118905
	Online measurement of aerosol inorganic and organic nitrogen based on thermal evolution and chemiluminescent detection
	Li J.; Yu X.; Li Q.; Wang S.; Cheng Y.Y.; Yu J.Z.
发表日期	2022
ISSN	1352-2310
卷号	271
英文摘要	Nitrogenous aerosols, including inorganic nitrogen (IN) and organic nitrogen (ON), are relevant to ecosystem evolution, secondary aerosol formation, and biotoxicity. While analytical method for aerosol IN species is achievable, a direct quantification method of bulk ON is so far unavailable, hindering the quantitative assessment of atmospheric nitrogenous aerosols. In this study, we develop the first online instrument method for simultaneous quantification of aerosol IN and ON. The instrument is based on programmed thermal evolution and chemiluminescent detection of nitrogenous aerosols coupled with multivariate curve resolution analysis. Atmospheric abundances of IN and ON at a suburban site in Hong Kong were quantified using the online technique, which was validated through comparing with IN measured by ion chromatography analysis of offline filters. The average mass concentrations of TN, IN, and ON were 1.84 ± 0.99, 1.59 ± 0.93, and 0.24 ± 0.09 μgN/m3, respectively. ON accounted for 13.0% of aerosol TN during the measurement period. Examination of the online IN and ON measurements during hours of aerosol nitrogen episodes revealed that biomass burning emissions and secondary formation processes could be important sources of aerosol ON. This method breakthrough enables the quantitative assessment of aerosol nitrogen at the diurnal scale, providing an effective tool to study sources and environmental impacts of nitrogenous aerosols. © 2021 Elsevier Ltd
关键词	Nitrogenous aerosol Online measurement Organic nitrogen Thermal evolution
语种	英语
scopus关键词	Atmospheric aerosols; Atmospheric thermodynamics; Chemiluminescence; Environmental impact; Ion chromatography; Ecosystem evolution; Inorganic nitrogen; Inorganic-organic; Measurements of; Nitrogenous aerosol; On-line measurement; Organic nitrogen; Quantitative assessments; Secondary aerosols; Thermal evolution; Nitrogen; inorganic compound; inorganic nitrogen; organic nitrogen; unclassified drug; aerosol; aerosol formation; biomass burning; detection method; inorganic nitrogen; measurement method; organic nitrogen; air quality; Article; biomass; chemoluminescence; concentration (parameter); environmental impact; Hong Kong; ion chromatography; online system; physical phenomena; secondary organic aerosol; thermal evolution; thermography; validation process; China; Hong Kong
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/248090
作者单位	Division of Environment and Sustainability, Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong999077, China; Department of Chemistry, Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong999077, China
推荐引用方式 GB/T 7714	Li J.,Yu X.,Li Q.,et al. Online measurement of aerosol inorganic and organic nitrogen based on thermal evolution and chemiluminescent detection[J],2022,271.
APA	Li J.,Yu X.,Li Q.,Wang S.,Cheng Y.Y.,&Yu J.Z..(2022).Online measurement of aerosol inorganic and organic nitrogen based on thermal evolution and chemiluminescent detection.ATMOSPHERIC ENVIRONMENT,271.
MLA	Li J.,et al."Online measurement of aerosol inorganic and organic nitrogen based on thermal evolution and chemiluminescent detection".ATMOSPHERIC ENVIRONMENT 271(2022).