Talk:Nitrogen oxide

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there are NOT only 5 oxides of nitrogen there is also Dinitrogen Tetroxide N2O4 this is not a contributor to air pollution this oxide runs in equalibrium with NO2, produced naturally in low amounts.

2NO2 (g) <--> N2O4

reference: Laidler, Greg; 1991; Environmental Chemistry, An Australian Perspective, 2nd Ed; Longman Cheshire; Melbourne, Australia


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[edit] NOx should have its own page

Given the atmospheric importance of NO and NO2 which have a fast cycle coupling them and the regulatory use of NOx for the sum of NO plus NO2 (in atmospheric chemistry other oxides of nitrogen are not part of NOx) I do not think that NOx should be part of the Nitrogen oxide page. I therefore call for the reinstatement of the NOx page.--NHSavage 07:19, 7 September 2005 (UTC)

[edit] No Prompt NOx description

There's no explanation as to what is Prompt NOx and how its formed. It might also be interesting to add the names of the people normally credited with discovering these NOx formation routes (Zeldovich in the Thermal NOx case and Fenimore in the Prompt NOx case)

I was lured to this page as I was about to ask what "prompt NOx" is myself. I was thinking of asking the person responsible for originating the text but they were an IP number long inactive with only 1 edit. Can anyone enlighten me or provide a reference? By the way, not a bad idea about the discoverers. -Onceler 02:27, 9 February 2006 (UTC)
  • So, internal combustion engines emit carbon moNOxious phew!!!mes. Anthony Appleyard 16:56, 18 February 2006 (UTC)

[edit] NOx scavenging

Could someone add material on NOx scavenging? Thanks, Hu Gadarn 21:39, 25 August 2006 (UTC)

[edit] Titanium dioxide

According to the French newspaper Ouestfrance a asphalt concrete including Titanium dioxide, 6 to 8 kg per square meter, destruct a substantial part of NOx. 216.86.113.16 01:23, 12 October 2006 (UTC)

[edit] Lightning

Isn't lightning also a significant source of NOx in the atmosphere [1]? Jim.henderson 16:18, 2 May 2007 (UTC)

[edit] N2O3 structure

Is the depicted structure of N2O3 correct as O=N-N=O=O i.e. with one N of valence 3 and one N of valence 5? I've always thought it were O=N-O-N=O i.e. with both N of valence 3. Drirpeter 18:46, 3 September 2007 (UTC)

It is correct, and is better described as nitrogen(II,IV) oxide rather than nitrogen(III) oxide.
See http://www.webelements.com/compounds/nitrogen/dinitrogen_trioxide.html for confirmation.
Ben 19:37, 3 September 2007 (UTC)

[edit] Misleading about NOx

Parts of this article are highly misleading. NOx is not considered a greenhouse gas. It doesn't say so in the article either, but nor is there any mention of why NOx is regulated. The reason for the regulation is that NOx emissions causes acidification of water and soil, and also is the cause of adverse effects such as respiratory diseases and immune deficiencies among asthmatics and other vulnerable groups.

Nitrous oxide (N2O) is a greenhouse gas, and it is included in the Kyoto Protocol, but regulations on emissions have not been widely implemented in national legislations, and it is not part of most existing cap and trade systems.

I strongly agree with earlier posting by NHSavage that NOx should have it's own article. Also,

Not being a biochemist I would strongly prefer not being the one to make these changes, but if no one else rises to challenge, I will take a look at it in a couple of weeks, when I have the time.

80.64.206.190 (talk) 13:42, 4 June 2008 (UTC)

Okay, I took a whack at it. It still could use some expansion regarding specific legislation, though. Should we mention the Nitrogen Oxide Protocol? Feezo (Talk) 16:50, 4 June 2008 (UTC)