搜索结果: 1-7 共查到“大气科学 NH3”相关记录7条 . 查询时间(1.099 秒)
青岛大气中HNO3、HNO2、NH3及PM2.5中氮组分的浓度特征和气-粒平衡关系
硝酸气体 亚硝酸气体 氨气
2014/12/20
研究PM2.5中NO3-、NO2-、NH4+及其气态前体物HNO3、HNO2、NH3的浓度特征和气-粒平衡关系,对深入认识PM2.5的来源及控制因素具有重要意义.因此,本文利用2012年6—7月在青岛采集的denuder和PM2.5大气样品,分析了其中气态和颗粒态氮组分的浓度.结果发现,青岛大气中HNO3、HNO2和NH3浓度分别为(0.80±0.79) μg·m-3、(0.49±0.59) μg...
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 ...
Laboratory study on new particle formation from the reaction OH + SO2: influence of experimental conditions, H2O vapour, NH3 and the amine tert-butylamine on the overall process
Laboratory study new particle formation the reaction OH + SO2 H2O vapour NH3 the amine tert-butylamine the overall process
2010/8/16
Nucleation experiments starting from the reaction of OH radicals with SO2 have been performed in the IfT-LFT flow tube under atmospheric conditions at 293±0.5 K for a relative humidity of 13–61%. The ...
A novel model to predict the physical state of atmospheric H2SO4/NH3/H2O aerosol particles
novel model atmospheric H2SO4/NH3/H2O aerosol particles
2009/3/11
The physical state of the tropospheric aerosol is largely unknown despite its importance for cloud formation and for the aerosol's radiative properties. Here we use detailed microphysical laboratory m...
Gas-particle interactions above a Dutch heathland: III. Modelling the influence of the NH3-HNO3-NH4NO3 equilibrium on size-segregated particle fluxes
Gas-particle interactions Dutch heathland NH3-HNO3-NH4NO3 equilibrium particle fluxes
2009/3/2
Micrometeorological measurements of size-segregated particle number fluxes above Dutch heathlands and forests have repeatedly shown simultaneous apparent emission of particles with a diameter (Dp)<0.1...
Gas-particle interactions above a Dutch heathland：I. Surface exchange fluxes of NH3, SO2, HNO3 and HCl
Gas-particle interactions Dutch heathland NH3 SO2 HNO3
2009/2/27
A field measurement campaign was carried out over a Dutch heathland to investigate the effect of gas-to-particle conversion and ammonium aerosol evaporation on surface/atmosphere fluxes of ammonia and...
Estimating the NH3:H2SO4 ratio of nucleating clusters in atmospheric conditions using quantum chemical methods
NH3:H2SO4 quantum chemical methods
2008/12/10
We study the ammonia addition reactions of H2SO4·NH3 molecular clusters containing up to four ammonia and two sulfuric acid molecules using the ab initio method RI-MP2 (Resolution of Identity 2nd orde...