IEECAS OpenIR  > 黄土与第四纪地质国家重点实验室(2010~)
Pollution characterization and source identification of nitrogen-containing species in fine particulates: A case study in Hefei city, East China
Zhou, Jingjing1,2,3; Liu, Guijian1,3; Zhang, Hong1; Liu, Keke1; Arif, Muhammad1,4
Corresponding AuthorLiu, Guijian(lgj@ustc.edu.cn)
2021-12-01
Source PublicationCHEMOSPHERE
ISSN0045-6535
Volume285Pages:9
AbstractTo identify the nitrogen sources in atmospheric particulate matter, the stable isotope technique has been proven as an effective method. In this study, PM2.5 samples at different pollution levels were collected from March 2018 to February 2019 in Hefei to analyze and compare the chemical composition. The results showed that the concentrations of PM2.5, total nitrogen (TN) and nitrogenous species, as well as the total nitrogen isotopic composition (delta 15N) increased with the aggravation of pollution. Ammonium nitrogen (NH4+-N, 54%) was the dominant nitrogen-containing specie during the whole campaign, followed by nitrate nitrogen (NO3 -N, 34%) and organic nitrogen (ON, 12%). The delta 15N was positively correlated with NH4+-N/TN but negatively correlated with NO3xe213; -N/TN. NH4NO3 and NH4HSO4 were the dominant forms of the secondary inorganic aerosols. In addition, a significant positive correlation was observed between the temperature and delta 15N. Nitrogen source identification of PM2.5 was conducted using Positive Matrix Factorization (PMF) model, delta 15N values and Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT) model. The results indicated that the contributions of the four main nitrogen sources were obtained and shown in descending order: combustion and industrial emission (42.06%) > secondary aerosols (24.04%) > vehicle exhaust (23.57%) > re-suspended dust (10.33%). The nitrogen aerosols might be mainly influenced by local emissions on normal and slight pollution days, while by both local emissions and transport from other areas on moderate and serious pollution days. Furthermore, nitrogen-containing species in PM2.5 primarily originated from long/medium-distance transportation in two serious pollution events during the entire campaign.
KeywordPM2 5 Nitrogen-containing species Total nitrogen isotopic composition Pollution level Source identification
DOI10.1016/j.chemosphere.2021.131316
WOS KeywordSOURCE APPORTIONMENT ; ISOTOPIC COMPOSITIONS ; STABLE CARBON ; CHEMICAL CHARACTERISTICS ; ATMOSPHERIC AMMONIA ; SEASONAL-VARIATIONS ; AEROSOLS ; PM2.5 ; EMISSIONS ; MATTER
Indexed BySCI ; SCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41972166] ; National Natural Science Foundation of China[41173032]
WOS Research AreaEnvironmental Sciences & Ecology
Funding OrganizationNational Natural Science Foundation of China
WOS SubjectEnvironmental Sciences
WOS IDWOS:000704464400003
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/17101
Collection黄土与第四纪地质国家重点实验室(2010~)
Corresponding AuthorLiu, Guijian
Affiliation1.Univ Sci & Technol China, Sch Earth & Space Sci, CAS Key Lab Crust Mantle Mat & Environm, Hefei 230026, Peoples R China
2.Huainan Normal Univ, Sch Chem & Mat Engn, Huainan 232038, Peoples R China
3.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Peoples R China
4.Muhammad Nawaz Shareef Univ Agr, Dept Soil & Environm Sci, Multan 66000, Pakistan
Recommended Citation
GB/T 7714
Zhou, Jingjing,Liu, Guijian,Zhang, Hong,et al. Pollution characterization and source identification of nitrogen-containing species in fine particulates: A case study in Hefei city, East China[J]. CHEMOSPHERE,2021,285:9.
APA Zhou, Jingjing,Liu, Guijian,Zhang, Hong,Liu, Keke,&Arif, Muhammad.(2021).Pollution characterization and source identification of nitrogen-containing species in fine particulates: A case study in Hefei city, East China.CHEMOSPHERE,285,9.
MLA Zhou, Jingjing,et al."Pollution characterization and source identification of nitrogen-containing species in fine particulates: A case study in Hefei city, East China".CHEMOSPHERE 285(2021):9.
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