items

Do something for our planet, print this page only if needed. Even a small action can make an enormous difference when millions of people do it!

Figure

Nitrogen oxide - Annual limit value for the protection of vegetation

Figure Created 22 Aug 2014 Published 22 Aug 2014 Last modified 04 Sep 2014

1 min read

In the air quality directive (2008/EC/50), the EU has set a critical level for nitrogen oxides (NOx) for the protection of vegetation within the zones designated by member states: the NOx annual mean value may not exceed 30 micrograms per cubic metre (µg/m3).