标题:Size distributions of nitrated phenols in winter at a coastal site in north China and the impacts from primary sources and secondary formation
作者:Liang Y.; Wang X.; Dong S.; Liu Z.; Mu J.; Lu C.; Zhang J.; Li M.;等 更多
作者机构:[Liang, Y] Environment Research Institute, Shandong University, Qingdao, 266237, China;[ Wang, X] Environment Research Institute, Shandong University, 更多
通讯作者:Wang, X(xinfengwang@sdu.edu.cn)
通讯作者地址:[Wang, X] Environment Research Institute, Shandong UniversityChina;
来源:Chemosphere
出版年:2020
卷:250
DOI:10.1016/j.chemosphere.2020.126256
关键词:Aqueous formation; Coal combustion; Firework; Nitrated phenols; Secondary formation; Size distribution
摘要:Nitrated phenols in particulate matters are among the major components of brown carbon, harm plant growth and human health. To understand the size distributions of nitrated phenols in the polluted coastal region and the factors influencing these distributions, size-resolved particulate matters were collected from a rural site in the coastal city of Qingdao, China, in January 2019, and analyzed for the presence of 11 nitrated phenols. The average concentrations of total nitrated phenols in fine- and coarse-mode particles were 123.6 and 37.2 ng m−3, respectively. 4-Nitrophenol was found to be the dominant nitrated phenol, followed by 3-methyl-6-nitrocatechol, 3-methyl-4-nitrophenol, and 4-nitrocatechol. On average, maximum concentrations of nitrated phenols were in condensation-mode particles, whereas a minor concentration peak of nitro-salicylic acids was present in droplet-mode particles. In addition, a minor concentration peak of 4-methyl-2,6-dinitrophenol was noticed in coarse-mode particles. Comparisons of the size distributions under different situations confirmed that both primary emissions and secondary formation had significant effects on the abundances and particle-sizes of nitrated phenols. Coal combustion in residential villages and firework burning during a festival led to a sharp increase of nitrated phenols in condensation-mode particles, whereas dust promoted their heterogeneous formation in coarse-mode particles, and high humidity in the coastal area facilitated their aqueous formation in droplet-mode particles. © 2020 Elsevier Ltd
收录类别:SCOPUS
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85079844649&doi=10.1016%2fj.chemosphere.2020.126256&partnerID=40&md5=5f98060c1185b7150dc6fbfa044ff726
TOP