http://72.14.177.54/Environmental_Technology/?title=Photochemical_smog&action=history Revision history for this page on the wiki en MediaWiki 1.15.1 Wed, 17 Jun 2026 04:18:36 GMT http://72.14.177.54/Environmental_Technology/?title=Photochemical_smog&diff=2238&oldid=prev <p></p> <p><b>New page</b></p><div>Photochemical smog is a mixture of pollutants which includes particulates, nitrogen oxides, ozone, aldehydes, peroxyethanoyl nitrate (PAN), unreacted hydrocarbons, etc. The smog often has a brown haze due to the presence of nitrogen dioxide. It causes painful eyes.<br /> <br /> The Cause<br /> <br /> The condition needed for the formation of the smog are present in modern cities. They included sunlight, hydrocarbons, nitrogen oxides and particulates which act as catalyst.<br /> <br /> These are the equations in the formation of photochemical smog.<br /> <br /> <br /> ==reference==<br /> http://hk.geocities.com/xavier114fch/03/03b.htm</div> Fri, 24 Feb 2006 21:27:28 GMT Jalcst-8549 http://72.14.177.54/Environmental_Technology/Talk:Photochemical_smog