DOI: 10.1016/j.atmosres.2019.03.008
Scopus记录号: 2-s2.0-85062912379
论文题名: The hourly characteristics of aerosol chemical compositions under fog and high particle pollution events in Kinmen
作者: Chen Y.-C. ; Chou C.C.-K. ; Tsai Y.-J. ; Chang S.-Y. ; Chen W.-N.
刊名: Atmospheric Research
ISSN: 1698095
出版年: 2019
卷: 223 起始页码: 132
结束页码: 141
语种: 英语
英文关键词: Fog
; Haze
; Heterogeneous
; NOz
; Relative humidity
Scopus关键词: Aerosols
; Air quality
; Atmospheric humidity
; Fog
; Nitrates
; Sulfur compounds
; Water treatment
; Aerosol chemical composition
; Haze
; Heterogeneous
; Heterogeneous reactions
; Liquid water content
; Measuring equipments
; Nitrate concentration
; Quality degradation
; Water pollution
英文摘要: The hourly measurement of inorganic soluble ions in PM 10 aerosols was conducted with new in situ air composition measuring equipment (ACME) from March 15 to April 15, 2016, on Kinmen Island. The purposes of this study are to understand the influences of fog on secondary aerosol formation and to determine the impacts of air pollutants on haze formation under different relative humidity conditions. The hourly measurements showed that the mass fraction of sulfate in PM 10 increased with increases in the liquid water content of fog and decreases in the gaseous concentrations of SO 2 . The value of the SO 4 2− /PM 10 ratio is also affected by the concentration of SO 2 before the fog occurs and the level of the fog. This finding indicates that a humid environment is important for enhancing the heterogeneous reaction of sulfate formation. The nitrate concentrations were related to the ratio of NH 4 + to SO 4 2− during fog episodes. The formation of particulate NO 3 − was associated with ammonium formation under ammonium-rich conditions (NH 4 + /SO 4 2− > 1.5). The gas-phase nitrate was usually observed under ammonium-poor conditions. During periods of high particle pollution, the air mass was from near the ground surface in the mainland coastal areas and transported more pollution to Kinmen. The concentrations of NO 2 − were higher during periods of high particle pollution, which means that the secondary aerosol formation in the nearby areas also strongly affected the air quality degradation. The short-term and rapid change in the north-south wind system not only brings water vapor from the south but also delivers accumulated pollutants via the transport of northern pollution at low wind speeds. © 2019 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122260
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Public Health, Chung Shan Medical University, Taichung, Taiwan; Research Center for Environmental Changes, Academia Sinica, Taipei, Taiwan; Department of Family and Community Medicine, Chung Shan Medical University Hospital, Taichung, Taiwan
Recommended Citation:
Chen Y.-C.,Chou C.C.-K.,Tsai Y.-J.,et al. The hourly characteristics of aerosol chemical compositions under fog and high particle pollution events in Kinmen[J]. Atmospheric Research,2019-01-01,223