【摘 要】
：
O3 is mainly produced by photochemical reaction of the nitrogen oxides(NO+NO2= NOx)emitted from vehicles and VOCs.H2O2 plays a role as a reservoir for amounts of HOx andNOx which triggers increasing o
【机 构】
：
Department of Earth and Environmental Sciences,Korea University,Seoul,Republic of Korea 02841
【出 处】
：
第21届中国大气环境科学与技术大会暨中国环境科学学会大气环境分会2015年学术年会
论文部分内容阅读
O3 is mainly produced by photochemical reaction of the nitrogen oxides(NO+NO2= NOx)emitted from vehicles and VOCs.H2O2 plays a role as a reservoir for amounts of HOx andNOx which triggers increasing ozone in the atmosphere.In order to verify O3 chemistry in urbansite,O3,NO,NO2,CO,SO2,Hydrogen peroxide(H2O2),and Methyl hydrogen peroxide(CH3OOH; MHP)were measured from May 18,2015 to June 12.VOCs were measured withcanister twice a day(09:30 and 15:00).The measuring site was installed in Korea Institute ofScience and Technology(KIST)in Seoul during the 2015 MAPS-Seoul Campaign.The west sideof KIST site was surrounded by freeways and the forest was located at the east side.O3 ranged from 2 to 155 ppbv,and appeared several high concentration events over 100 ppbv(5/27,5/28,6/4,6/6,6/7,6/10).H2O2 was usually present in the order of several dozens of pptvlevel(17 ±10 pptv)and diurnal variation which depends on the photochemical reaction was clarify.Average concentrations of NOX,Isoprene and Toluene were 26ppbv,0.7ppbv,and 3.1ppbv.Although O3,Isoprene were higher in June,H2O2,NOx,Toluene were lower than that in May.To exactly find out the O3 formation mechanism,VOCs,Nitrogen Compound and otherpollutants analysis would be required.These studies will be useful to understand the O3 Sensitivityduring 2015 MAPS-Seoul Campaign.
其他文献
Like O3,PeroxyAcetyl Nitrate(PAN)is a by-product of a series of photochemicalreactions initiated by hydrocarbons and nitrogen oxides,which are major air pollutants inmegacities such as Seoul.Therefore
Particulate matter(PM)remains as a serious air quality problem in megacities inthe Pearl River Delta(PRD)economic region in South China.Guangzhou,located in the PRDregion,has been suffering from indus
The Pearl River Delta(PRD)region in South China is one of the mosteconomically developed regions in China while also noted for its severe air pollution,especiallyduring the winter season.In order to c
Non-refractory submicron aerosol is characterized using an Aerosol ChemicalSpeciation Monitor(ACSM)in the fall and winter seasons of 2013 at the roadside in an Asianmegacity environment in Hong Kong.O
For about one month from May 18 through June 12 during the 2015 KORUS-AQpre-campaign period,nitrogen compounds(NO,NO2,NOy),O3,CO and SO2 were measured at theKIST(Korea Institute of Science and Technol
O3 and its precursors(NOx,CO,SO2)were measured at six heights of a 40 mtower at Taehwa Research Forest near Seoul Metropolitan Areas during 2011~2014.Volatileorganic compounds(VOCs)were measured using
Ozone(O3)and Secondary organic aerosol(SOA)are important pollutants in theurban atmosphere.Benzene is one of the most important aromatic precursors,which couldproduce O3 and SOA in the presentence of
The frequent occurrence of regional air pollution makes it challenging to control.Based on sensitivity research performed with the Chinese Unified Atmospheric ChemistryEnvironment(CUACE)model and the
Particulate matter(PM)pollution has led to great scientific,governmental andpublic concerns due to its adverse effects on air quality and human health.Among all theconstituents in particle matter,orga
This study focuses on the importance of initial conditions in air-quality prediction.Assimilation experiments are employed using WRF-Chem model and Grid-point StatisticalInterpolation(GSI)for a 9-day