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Particulate Nitrosamines and Nitramines in Seoul and Their Major Sources: Primary Emission versus Secondary Formation

Title
Particulate Nitrosamines and Nitramines in Seoul and Their Major Sources: Primary Emission versus Secondary Formation
Authors
Choi, Na RaeAhn, Yun GyongLee, Ji YiKim, EunhyeKim, SoontaePark, Seung MyungSong, In HoShin, Hye JungKim, Yong Pyo
Ewha Authors
김용표이지이
SCOPUS Author ID
김용표scopus; 이지이scopus
Issue Date
2021
Journal Title
ENVIRONMENTAL SCIENCE & TECHNOLOGY
ISSN
0013-936XJCR Link

1520-5851JCR Link
Citation
ENVIRONMENTAL SCIENCE & TECHNOLOGY vol. 55, no. 12, pp. 7841 - 7849
Keywords
organic nitrogenous compoundsaminessecondary organic aerosolorthogonal partial least squared discrimination analysis (OPLS-DA)atmospheric reactionsprimary emissionkinetics
Publisher
AMER CHEMICAL SOC
Indexed
SCIE; SCOPUS WOS scopus
Document Type
Article
Abstract
Seven nitrosamines and three nitramines in particulate matter with an aerodynamic diameter of less than or equal to 2.5 mu m (PM2.5) collected in 2018 in Seoul, South Korea, were quantified. Annual mean concentrations of the sum of nitrosamines and nitramines were 9.81 +/- 18.51 and 1.12 +/- 0.70 ng/m(3), respectively, and nitrosodi-methylamine (NDMA) and dimethyl-nitramine (DMN) comprised the largest portion of nitrosamines and nitramines, respectively. Statistical analyses such as nonparametric correlation analysis, positive matrix factorization, analysis of covariance, and orthogonal partial least squared discrimination analysis were carried out to identify contribution of the atmospheric reactions in producing NDMA and DMN. In addition, kinetic calculation using reaction information obtained from the previous chamber studies was performed to estimate concentrations of NDMA and DMN that might be produced from the atmospheric reactions. It was concluded that (1) the atmospheric reactions contributed to the concentrations of NDMA more than they did for those of DMN, (2) the contribution of atmospheric reactions to the concentrations of NDMA and DMN was significant due to high NO(2 )concentrations in winter, and (3) primary emissions predominantly affected the ambient concentrations of NDMA and DMN in spring, summer, and autumn.
DOI
10.1021/acs.est.1c01503
Appears in Collections:
엘텍공과대학 > 화학신소재공학전공 > Journal papers
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