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Discovery could lead to new catalyst design to reduce nitrogen oxides in diesel exhaust（图）
new catalyst design reduce nitrogen oxides diesel exhaust
2017/9/5
Researchers have discovered a new reaction mechanism that could be used to improve catalyst designs for pollution-control systems to further reduce emissions of smog-causing nitrogen oxides in diesel ...
The Surface of the Sea is a Sink for Nitrogen Oxides at Night（图）
Nitrogen Oxides Sink Surface
2014/3/20
The surface of the sea takes up nitrogen oxides that build up in polluted air at night, new measurements on the coast of southern California have shown. The ocean removes about 15 percent of these che...
Impact of Nitrogen Oxides, Volatile Organic Compounds and Black Carbon on Atmospheric Ozone Levels at a Semi Arid Urban Site in Hyderabad
Trace gas Ozone Volatile organic compounds Black carbon Meteorology and oxides of nitrogen.
2016/3/25
The surface level ozone (O3), nitrogen oxides (NOx = NO2 + NO), volatile organic compounds (VOCs), black carbon (BC)
and meteorological parameters were continuously monitored for the period of one ye...
Evaluation of Nitrogen Oxides Pollution in Takamatsu and Utazu Area in Kagawa Prefecture, Japan
Nitrogen Oxides NO2 NO Utazu Area Takamatsu Area
2013/3/12
We evaluate nitrogen oxides pollution in Takamatsu and Utazu area in Kagawa prefecture, Japan. Annually observations for nitrogen oxides (nitrogen dioxide; NO2, nitric oxide; NO) (1990-2007) were obta...
Ozone, carbon monoxide and nitrogen oxides time series at four alpine GAW mountain stations in central Europe
Ozone carbon monoxide nitrogen oxides four alpine GAW mountain stations central Europe
2010/12/28
Long-term, ground based in-situ observations of ozone (O3) and its precursor gases nitrogen dioxide (NO2) and carbon monoxide (CO) from the four sites Hohenpeissenberg and Zugspitze (D), Sonnblick (A)...
Nitrogen oxides and PAN in plumes from boreal fires during ARCTAS-B and their impact on ozone: an integrated analysis of aircraft and satellite observations
Nitrogen oxides and PAN boreal fires ARCTAS-B aircraft and satellite observations
2010/10/21
We determine enhancement ratios for NOx, PAN, and other NOy species from boreal biomass burning using aircraft data obtained during the ARCTAS-B campaign and examine the impact of these emissions on t...
Nitrogen oxides in the boundary layer and free troposphere at the Mt. Bachelor Observatory
Nitrogen oxides the boundary layer free troposphere the Mt. Bachelor Observatory
2010/8/16
Nitrogen oxide (NOx=NO+NO2) observations were made at the Mt. Bachelor Observatory in central Oregon, USA (MBO; 2.73 km above sea level) during one autumn and three springtime (15 April–20 May) period...
Nocturnal nitrogen oxides at a rural mountain-site in south-western Germany
Nocturnal nitrogen oxides a rural mountain-site south-western Germany
2010/8/12
A new, two-channel instrument for simultaneous NO3 and N2O5 monitoring was used to make the first comprehensive set of nocturnal NOx measurements (NO, NO2, NO3 and N2O5) at the Taunus Observatory, a r...
Homogeneous Oxidation of Volatile Nitrogen (NH3, HCN) to Nitrogen Oxides: A Modeling Study of the Effect of Alkali Vapors
Alkali NOx reduction Chemkin Kinetic modeling
2009/10/10
The effect of alkali vapors in the combustion of different types of Scandinavian fuels, i.e. Finnish black liquor, Swedish wood and Danish straw, was studied based on detailed chemical kinetic modelin...
A case study of ozone production, nitrogen oxides, and the radical budget in Mexico City
ozone production nitrogen oxides radical budget Mexico City
2009/5/7
Observations at a mountain-top site within the Mexico City basin are used to characterize ozone production and destruction, nitrogen oxide speciation and chemistry, and the radical budget, with an emp...
The partitioning of nitrogen oxides between ice and air is of importance to the ozone budget in the upper troposphere. In the present study, adsorption of nitrogen oxides on ice was investigated at at...
Observations of the diurnal and seasonal trends in nitrogen oxides in the western Sierra Nevada
diurnal and seasonal trends nitrogen oxides western Sierra Nevada
2009/1/20
Observations of speciated nitrogen oxides, namely NO2, total peroxy nitrates (ΣPNs), total alkyl nitrates (ΣANs), and HNO3 by thermal dissociation laser induced fluorescence (TD-LIF), and supporting c...
The weekend effect within and downwind of Sacramento – Part 1: Observations of ozone, nitrogen oxides, and VOC reactivity
Sacramento ozone nitrogen oxides VOC reactivity
2008/12/23
Day-of-week patterns in human activities can be used to examine the ways in which differences in primary emissions result in changes in the rates of photochemical reactions, and the production of seco...
The knowledge of the lightning-induced nitrogen oxides (LNOx) source is important for understanding and predicting the nitrogen oxides and ozone distributions in the troposphere and their trends, the ...
Surface and boundary layer exchanges of volatile organic compounds, nitrogen oxides and ozone during the GABRIEL campaign
Surface and boundary layer volatile organic compounds nitrogen oxides ozone
2008/11/24
We present an evaluation of sources, sinks and turbulent transport of nitrogen oxides, ozone and volatile organic compounds (VOC) in the boundary layer over French Guyana and Suriname during the Octob...