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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...
Quantification of PM2.5 organic carbon sampling artifacts in US networks
PM2.5 organic carbon sampling artifacts US networks
2010/8/13
Field blanks (bQF) and backup filters (quartz-fiber behind quartz-fiber filter; QBQ) have been adopted by US long-term air quality monitoring networks to estimate PM2.5 organic carbon (OC) sampling ar...
Organic nitrogen in PM2.5 aerosol at a forest site in the Southeast US
Organic nitrogen PM2.5 aerosol forest site Southeast US
2010/3/5
There is growing evidence that organo-nitrogen compounds may constitute a significant fraction of the aerosol nitrogen (N) budget. However, very little is known about the abundance and origin of this ...
Inverse modeling and mapping US air quality influences of inorganic PM2.5 precursor emissions using the adjoint of GEOS-Chem
US air quality influences inorganic PM2.5 precursor emissions GEOS-Chem
2009/8/25
Influences of specific sources of inorganic PM2.5 on peak and ambient aerosol concentrations in the US are evaluated using a combination of inverse modeling and sensitivity analysis. First, sulfate an...
Elemental content of PM2.5 aerosol particles collected in Göteborg during the Göte-2005 campaign in February 2005
Elemental content PM2.5 aerosol particles Gö te-2005 campaign
2009/5/7
The Göte–2005 measurement campaign aimed at studying the influence of the winter thermal inversions on urban air pollution. Elemental speciation of PM2.5 aerosol particles, collected on Teflon fi...
To what extent can aerosol water explain the discrepancy between model calculated and gravimetric PM10 and PM2.5?
extent can aerosol water PM10 PM2.5
2009/2/6
Inter-comparisons of European air quality models show that regional transport models, including the EMEP (Co-operative Programme for monitoring and evaluation of the long-range transmission of air pol...
Sensitivity of PM2.5 to climate in the Eastern US: a modeling case study
PM2.5 climate Eastern US modeling case
2008/12/17
The individual effects of various meteorological parameters on PM2.5 concentrations in the Eastern US are examined using the PMCAMx chemical transport model so that these effects and their relative ma...