搜索结果: 1-14 共查到“大气化学 particulate”相关记录14条 . 查询时间(0.093 秒)
Measurements of Gaseous NH3 and Particulate NH4 + in the Atmosphere by Fluorescent Detection after Continuous Air–water Droplet Sampling
Ammonia Gas-particle partitioning Microflow analysis Short-term variation
2016/3/28
Phase partitioning of NHx (gaseous NH3 and particulate NH4
+) in the atmosphere is crucial for the lifetime of NHx
during atmospheric transport. Reliable data for gaseous NH3 and NH4
+ in aerosols ...
Relating hygroscopicity and composition of organic aerosol particulate matter
HTDMA SOA organic precursors a smog chamber
2011/2/25
A hygroscopicity tandem differential mobility analyzer (HTDMA) was used to measure the water uptake (hygroscopicity) of secondary organic aerosol (SOA) formed during the chemical and photochemical oxi...
Climate impact on airborne particulate matter concentrations in California using seven year analysis periods
Climate impact airborne particulate matter California seven year analysis periods
2010/11/30
The effect of global climate change on the annual average concentration of fine particulate matter (PM2.5) in California was studied using a climate-air quality modeling system composed of global thro...
Seasonal cycle and temperature dependence of pinene oxidation products, dicarboxylic acids and nitrophenols in fine and coarse air particulate matter
Seasonal cycle temperature dependence pinene oxidation products fine and coarse air particulate matter
2010/9/1
Filter samples of fine and coarse air particulate matter (PM) collected over a period of one year in central Europe (Mainz, Germany) were analyzed for water-soluble organic compounds (WSOCs), includin...
Organic particulate matter formation at varying relative humidity using surrogate secondary and primary organic compounds with activity corrections in the condensed phase obtained using a method based on the Wilson equation
Organic particulate matter formation surrogate secondary primary organic the Wilson equation
2010/8/13
Secondary organic aerosol (SOA) formation in the atmosphere is currently often modeled using a multiple lumped "two-product" (N·2p) approach. The N·2p approach neglects: 1) variation of activity coeff...
Distribution of gaseous and particulate organic composition during dark α-pinene ozonolysis
gaseous and particulate organic composition dark α-pinene ozonolysis
2010/8/12
Secondary Organic Aerosol (SOA) affects atmospheric composition, air quality and radiative transfer, however major difficulties are encountered in the development of reliable models for SOA formation....
Nitric acid and particulate matter measurements at Athens, Greece, in connection with corrosion studies
Nitric acid particulate matter measurements Athens Greece
2009/11/19
For a long time, scientists have been concerned about the effects of air pollution on materials and especially on the monuments of the cultural heritage. The EU funded a project, entitled MULTI-ASSESS...
Intra-community spatial variability of particulate matter size distributions in Southern California/Los Angeles
Intra-community spatial variability particulate matter size distributions Southern California/Los Angeles
2009/3/13
Ultrafine particle (UFP) number concentrations vary significantly on small spatial and temporal scales due to their short atmospheric lifetimes and multiplicity of sources. To determine UFP exposure g...
Gaseous（DMS, MSA, SO2, H2SO4 and DMSO）and particulate（sulfate and methanesulfonate）sulfur species over the northeastern coast of Crete
MSA SO2 H2SO4 DMSO northeastern coast of Crete
2009/3/11
A detailed study of the levels, the temporal and diurnal variability of the main compounds involved in the biogenic sulfur cycle was carried out in Crete (Eastern Mediterranean) during the Mediterrane...
Wildfire particulate matter in Europe during summer 2003: meso-scale modeling of smoke emissions, transport and radiative effects
Wildfire particulate matter meso-scale modeling smoke emissions transport radiative effects
2008/12/16
The present study investigates effects of wildfire emissions on air quality in Europe during an intense fire season that occurred in summer 2003. A meso-scale chemistry transport model CHIMERE is use...
PM measurement campaign HOVERT in the Greater Berlin area: model evaluation with chemically specified particulate matter observations for a one year period
PM HOVERT Greater Berlin chemically specified particulate matter
2008/11/27
The HOVERT (HOrizontal and VERtical Transport of ozone and particulate matter) campaign held in the Berlin Brandenburg area in Eastern Germany from September 2001 to September 2002 allowed to collect ...
Sources of organic carbon in fine particulate matter in northern European urban air
organic carbon fine particulate matter northern European urban air
2008/11/24
major fraction of fine particle matter consists of organic carbon (OC) but its origin is still inadequately known. In this study the sources of OC were investigated in the northern European urban env...
Relationships between submicrometer particulate air pollution and air mass history in Beijing, China, 2004–2006
submicrometer particulate air pollution air mass history Beijing China
2008/11/24
The Chinese capital Beijing is one of the global megacities where the effects of rapid economic growth have led to complex air pollution problems that are not well understood. In this study, ambient p...
Seven year particulate matter air quality assessment from surface and satellite measurements
particulate matter air quality assessment satellite measurement
2008/11/11
Using seven years of the Moderate Resolution Imaging Spectroradiometer (MODIS) aerosol optical thickness (AOT) data and ground measurements of particulate matter mass over one site in the Southeastern...