气候变化领域集成服务门户(CCPortal): Collocated speciation of PM2.5 using tandem quartz filters in northern nanjing, China: Sampling artifacts and measurement uncertainty

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DOI	10.1016/j.atmosenv.2020.118066
	Collocated speciation of PM2.5 using tandem quartz filters in northern nanjing, China: Sampling artifacts and measurement uncertainty
	Yang L.; Shang Y.; Hannigan M.P.; Zhu R.; Wang Q.; Qin C.; Xie M.
发表日期	2020
ISSN	13522310
英文摘要	In this study, collocated samples of particulate matter with aerodynamic diameter less than 2.5 μm (PM2.5) were collected every sixth day on quartz filters (Qf) at a suburban site in northern Nanjing, China for one year. A backup quartz filter (Qb) was installed behind Qf to estimate positive artifacts. The analysis of gravimetric mass, water-soluble inorganic ions (WSIIs), total organic (OC) and elemental carbon (EC), water-soluble OC (WSOC), total nitrogen (WSTN) and organic nitrogen (WSON) were performed on both Qf and Qb. Due to the high mass loadings on Qf (17.9 ± 7.82 mg filter−1, 4.71–38.5 mg filter−1), the collocated precision of gravimetric mass and dominant species (NH4+, NO3−, SO42−, OC, and EC) is better than that from previous work. Except K+, EC, and WSON, all other target components were detected on Qb with average Qb/Qf ratios ranging from 3.02 ± 3.48–21.7 ± 22.4%. The final concentrations and uncertainties of PM2.5 components were determined based on duplicate Qf–Qb data. The results suggest that using an error fraction of 10% will underestimate the uncertainty of less concentrated species (e.g., Ca2+ and Mg2+) in PM2.5. Due to the evaporation loss of semi-volatile materials from the Qf, the Qf–Qb calculation would lead to an estimate of the lower limit for particulate NH4+, NO3−, and OC. Synchronized hourly data of PM2.5 mass and components were obtained at downtown Nanjing. The comparisons of gravimetric versus reconstructed PM2.5 and filter-based versus continuous measurements of PM2.5 components indicate that a substantial fraction of the unexplained gravimetric PM2.5 can be attributed to aerosol water. © 2020 Elsevier Ltd
英文关键词	Artifact; Collocated sampling; PM2.5; Quartz filter; Uncertainty
语种	英语
scopus关键词	Nitrogen; Particles (particulate matter); Quartz; Aerodynamic diameters; Continuous measurements; Elemental carbon; Measurement uncertainty; Particulate Matter; Sampling artifacts; Semi-volatile materials; Water soluble inorganic ions; Uncertainty analysis
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/153075
作者单位	Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, 219 Ningliu Road, Nanjing, 210044, China; Department of Mechanical Engineering, College of Engineering and Applied Science, University of Colorado, Boulder, CO 80309, United States; School of Artificial Intelligence, Nanjing University of Information Science & Technology, 219 Ningliu Road, Nanjing, 210044, China; State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China; Colleges of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
推荐引用方式 GB/T 7714	Yang L.,Shang Y.,Hannigan M.P.,et al. Collocated speciation of PM2.5 using tandem quartz filters in northern nanjing, China: Sampling artifacts and measurement uncertainty[J],2020.
APA	Yang L..,Shang Y..,Hannigan M.P..,Zhu R..,Wang Q..,...&Xie M..(2020).Collocated speciation of PM2.5 using tandem quartz filters in northern nanjing, China: Sampling artifacts and measurement uncertainty.Atmospheric Environment.
MLA	Yang L.,et al."Collocated speciation of PM2.5 using tandem quartz filters in northern nanjing, China: Sampling artifacts and measurement uncertainty".Atmospheric Environment (2020).