NOx

(redirected from Oxides of nitrogen)
Also found in: Dictionary, Thesaurus.
AcronymDefinition
NOxNitrogen Oxide
NOxOxides Of Nitrogen
NOxNitrous Oxide
NOxNorthern Crossroads
NOxNon Expansion (gaming)
NOxNoXiousNet
References in periodicals archive ?
For plants set up between 2003 and December 31, 2006, the particulate matter has been further narrowed to 50 mg per normal cubic metre while that of Sulphur dioxide, oxides of Nitrogen and Mercury has been fixed at 200, 300 and 0.
Land use and vegetation are known to influence the natural emission of VOCs, carbon monoxide, and oxides of nitrogen.
Now it is technically true that, in nature, oxides of nitrogen are produced by certain bacteria, forest fires, and lightning, so that a small amount of sea-level ozone would indeed be produced in the absence of human activity.
On the other hand, California has legislated draconian measures to reduce air pollution--limiting the release of VOCs (volatile organic compounds) and oxides of nitrogen with laws regulating everything from the use of lighter fluid in backyard barbecues all the way to mandating electric automobiles.
Unlike the closed-loop, three-way catalytic converter for spark-ignition engines it cannot convert oxides of nitrogen into environmentally more compatible nitrogen.
In a series of Decisions adopted at the end of April, the European Commission has specified certain measures covering the implementation of Directive 96/62/EC on the quality of ambient air, plus the related daughter Directives (Directive 1999/30/EC setting limit values for sulphur dioxide, nitrogen dioxide and oxides of nitrogen, particulate matter and lead in ambient air; Directive 2000/69/EC establishing limit values for benzene and carbon monoxide in ambient air; Directive 2002/3/EC on ozone in ambient air).
Those standards call For emissions of oxides of nitrogen [NOx] and nonmethane hydrocarbon [NMHC] to be limited to 4.
Included in the study's report are recommendations to: inventory all federal environmental monitoring programs; use federal hazardous-waste cleanup operations as field laboratories to study the chemistry of pollutants in soil; identify specially sensitive species -- such as bees, worms or fungi -- as early-warning senttinels of hazards; and conduct continental and global baseline studies for at least 10 years on the most important atmospheric pollutants -- such as ozone, methane and oxides of nitrogen and sulfur.
1-2, installed at ENEA SA Production is to ensure reduction of nitrogen oxide emissions from the current level of 500 mg / mAu (understood as the sum of the oxides of nitrogen as NO2 at 6% O2 in the exhaust gas dry) to the level of = 100 mg / mAu NOx (understood as the sum of the oxides of nitrogen as NO2 at 6% O2 in dry flue gas) in the range of 50 - 100% of the maximum sustainable yield and combustion of the primary fuel for boundary parameters and biomass co-firing in the mass fraction of not higher than 10%.