Ambient Air Quality Directive, Annex X - Ozone Precursor Substances
EU. Ambient Air. Ozone Precursor Substances: Annex X, Section B, Directive 2008/50/EC, last amended by Directive 2015/1480/EU, 29 August 2015
This list contains ozone precursor substances, including nitrogen oxides (NO and NO2) and volatile organic compounds (VOC) that shall be measured to analyze any trend in ozone precursors, to check the efficiency of emission reduction strategies, to check the consistency of emission inventories and to help attribute emission sources to observed pollution concentrations.