DOI: 10.1016/j.atmosres.2018.07.011
Scopus记录号: 2-s2.0-85049748942
论文题名: Measurement of ambient aerosols by single particle mass spectrometry in the Yangtze River Delta, China: Seasonal variations, mixing state and meteorological effects
作者: Hu R. ; Wang H. ; Yin Y. ; Zhu B. ; Xia L. ; Zhang Z. ; Chen K.
刊名: Atmospheric Research
ISSN: 1698095
出版年: 2018
卷: 213 起始页码: 562
结束页码: 575
语种: 英语
英文关键词: Meteorological effects
; Mixing states
; Seasonal variations
; SPAMS
; YRD
Scopus关键词: Aerosols
; Atmospheric humidity
; Binary alloys
; Mass spectrometry
; Mixing
; Nitrates
; Organic carbon
; Size distribution
; Sulfur compounds
; Aerosol mass spectrometers
; Meteorological condition
; Meteorological effects
; Mixing state
; Number size distribution
; Seasonal variation
; Single particle mass spectrometry
; SPAMS
; Precipitation (meteorology)
; aerosol
; ambient air
; concentration (composition)
; mass spectrometry
; mixing
; seasonal variation
; source apportionment
; China
; Yangtze Basin
英文摘要: Continuous measurements of ambient aerosols were performed with a single-particle aerosol mass spectrometer in Nanjing during all four seasons of 2015. Ambient particles were clustered into 11 classes, which included elemental carbon (EC) mainly with sulfate (EC-S); EC with nitrate and sulfate (EC-SN); EC with obvious organic signals (ECOC); organic carbon (OC); biomass/biofuel burning particles (Biomass); Ammonium; particles with obvious Na, K (NaK) and sulfate (NaK-S), NaK with nitrate and sulfate (NaK-SN); iron-containing particles (Fe-rich); miscellaneous metal-containing particles (MiscsMetals) and Dust. Seasonal local sources, dominated air masses and distinct atmospheric processes all affected the concentrations of various particles and caused different diurnal changes. EC-SN during summer slowly increased in the afternoon and NaK-SN had a peak at noon during winter. Differences in size distribution of each particle type between seasons were discussed. All types of particles showed unimodal number size distributions, their peak radius ranked as follows: fall < spring < summer ≤ winter. OC during fall had higher number fractions of between 0.2 and 0.5 μm (>20%) as a result from the decrease in temperature and increase in relative humidity (RH). The distributions of ECOC varied with seasons and were obviously influenced by EC and OC particles. Mixing states showed seasonal variations. In general, the fractions of particles mixed with secondary species were the highest/lowest in winter/fall. The effects of meteorological conditions on particles were investigated. With the increase of RH, the fractions of EC increased, and most particles mixed with more NH4 + and less C2H3O+. Characteristics of precipitation, such as duration and total rainfall amount, influenced particles. Enhanced secondary organic/inorganic species were found in particles during long-/short-term precipitation with intensities <1 mm. Less NH4 +, C2H3O+ and HSO4 − were found during precipitation compared with non-precipitation days. © 2018 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/108791
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, Nanjing University of Information Science &Technology, Nanjing, 210044, China
Recommended Citation:
Hu R.,Wang H.,Yin Y.,et al. Measurement of ambient aerosols by single particle mass spectrometry in the Yangtze River Delta, China: Seasonal variations, mixing state and meteorological effects[J]. Atmospheric Research,2018-01-01,213