Time filter

Source Type

Su B.,Atmospheric Background Monitoring Station in Wuyishan of Fujian Province | Xu J.,Atmospheric Background Monitoring Station in Wuyishan of Fujian Province | Ji X.,Atmospheric Background Monitoring Station in Wuyishan of Fujian Province | Tao J.,South China Institute of Environmental Sciences | And 2 more authors.
Huanjing Kexue Xuebao/Acta Scientiae Circumstantiae | Year: 2015

PM2.5 and PM2.5~10 samples were collected during March to May 2014 at Wuyishan, a national atmospheric background monitoring station in Fujian Province. Water-soluble inorganic ions in PM2.5 and PM2.5~10 were determined by ion chromatography. Meteorological parameters, trace gases, and PM10 and PM2.5 mass concentrations were also recorded. The results showed that the levels of PM and ions, especially in the coarse particle mode, were much higher during the dust storm event. In particular, nitrate concentrations increased more significantly than other ions during the dust storm event. The cation/anion ratios and NOR also increased significantly during the dust storm event. © 2015, Science Press. All right reserved.


Su B.-B.,Atmospheric Background Monitoring Station in Wuyishan of Fujian Province | Zhang Z.-S.,South China Institute of Environmental Sciences | Tao J.,South China Institute of Environmental Sciences | Xu J.-Y.,Atmospheric Background Monitoring Station in Wuyishan of Fujian Province | And 3 more authors.
Huanjing Kexue/Environmental Science | Year: 2015

PM2.5 and PM2.5-10 samples were collected during March to May of 2014 at the National atmospheric background monitoring station (Wuyishan station) in Fujian Province. Water-soluble inorganic ions in PM2.5 and PM2.5-10 were detennined. Meteorological parameters and air pollutants including SO2, NO2, O3, PM10 and PM2.5, were also recorded. The results showed the total water-soluble inorganic ions concentrations were (8.3 ± 2.8) μg·m-3 and (1.3 ± 0.9) μg·m-3, which accounted for (43.7 ± 7.5) % and (24.4 ± 6.4) % of the PM2.5 and PM2.5-10 mass, respectively. Sulfate and nitrate were the dominant ions in PM2.5 and PM2.5-10, respectively, which accounted for (32.4 ± 6.3)% and (8.9 ± 3.7)% of them, respectively. Sulfate mainly existed in fine particle in the forms of (NH4)2SO4 and K2SO4, while nitrate mainly existed in coarse particle in the form of Mg(NO3)2. The water-soluble inorganic ions at the Wuyishan background monitoring station in spring mainly came from long-distance transportation of dust, sea salt and pollutant of heavy polluted regions. ©, 2015, Science Press. All right reserved.


Su B.-B.,Atmospheric Background Monitoring Station in Wuyishan of Fujian Province | Liu X.-D.,Atmospheric Background Monitoring Station in Wuyishan of Fujian Province | Tao J.,South China Institute of Environmental Sciences
Huanjing Kexue/Environmental Science | Year: 2013

The online PM10 and PM2.5concentrations were measured from March 2011 to February 2012 at the national atmospheric background monitoring station in Wuyishan of Fujian Province to discuss the characteristic of PM10 and PM2.5 concentrations and the impact factors in forest and mountain background region of East China. HYSPLIT (Hybrid Single Particle Lagrangian Integrated Trajectory) Model was used to investigate the potential sources of particulates during the pollution episodes. The results showed that the background concentrations of PM10 and PM2.5 were (23±16) μg·m-3 and (18±12) μg·m-3, respectively. Seasonal variations of PM10 and PM2.5 loadings were observed, and loadings decreased in the same order: spring>autumn>winter>summer. PM10 and PM2.5 concentrations were obviously higher in spring than in other seasons because of the transportation of dust storm. The fine particles were the dominant pollutant which accounted for 76% of PM10. The good correlation between PM10/PM2.5 and gas pollutants suggested that regional transportation and secondary aerosol were the major sources in the background station. One episode occurring in April 2011 was related with the transportation of dust storm. However, another episode occurring in September 2011 had close relationship with the transportation of higher pollutant loadings in East China.


Su B.-B.,Atmospheric Background Monitoring Station in Wuyishan of Fujian Province | Xu J.-Y.,Atmospheric Background Monitoring Station in Wuyishan of Fujian Province | Zhang R.-Y.,Atmospheric Background Monitoring Station in Wuyishan of Fujian Province | Ji X.-X.,Atmospheric Background Monitoring Station in Wuyishan of Fujian Province
Huanjing Kexue/Environmental Science | Year: 2014

Transport characteristics of air pollutants transported to the background atmosphere of East China were investigated using HYSPLIT (Hybrid Single Particle Lagrangian Integrated Trajectory) 4.8 model driven by NCEP reanalysis data during June 2011 to May 2012. Based on the air pollutants monitoring data collected at the National atmospheric background monitoring station (Wuyishan station) in Fujian Province, characteristics of different clustered air masses as well as the origins of highly polluted air masses were further examined. The results showed that 65% of all the trajectories, in which air masses mainly passed over highly polluted area of East China, Jiangxi province and upper air in desert areas of Northwest China, carried polluted air to the station, while the rest of trajectories (35%) with air masses originated from ocean could effectively remove air pollutants at the Wuyishan station. However, the impact on the air pollutants for each air mass group varied with seasons. Elevated SO2 concentrations observed at the background station were mainly influenced by coal burning activities in Northern China during heating season. The high CO concentrations were likely associated with the pollutants emission in the process of coal production and consumption in Anhui province. The elevated NOx, O3, PM10 and PM2.5 concentrations were mostly impacted by East China with high levels of air pollutants.


Su B.-B.,Atmospheric Background Monitoring Station in Wuyishan of Fujian Province
Huanjing Kexue/Environmental Science | Year: 2013

The O3 concentrations were measured online from March 2011 to February 2012 at the national atmospheric background monitoring station in Wuyishan of Fujian Province to discuss the characteristic of O3 concentrations and the impact factors in forest and mountain background region of East China. HYSPLIT (Hybrid Single Particle Lagrangian Integrated Trajectory) Model was used to investigate the potential sources of particulates during the pollution episodes. The results showed that the background concentration of O3 was (87.9±34.1) μg·m-3. Seasonal variations of O3 loadings were observed, and the loadings decreased in the order spring>autumn>summer>winter. Analysis of correlation between O3 and other gas pollutants suggested regional transportation, stratospheric injection and photochemical production were the major sources of O3 in Wuyishan background station. The episodes were related with transportations of air parcel from Yangtze River Delta region, Pearl River Delta region and the high altitudes.

Loading Atmospheric Background Monitoring Station in Wuyishan of Fujian Province collaborators
Loading Atmospheric Background Monitoring Station in Wuyishan of Fujian Province collaborators