Directive 2008/50/EC of the European Parliament and of the CouncilShow full title

Directive 2008/50/EC of the European Parliament and of the Council of 21 May 2008 on ambient air quality and cleaner air for Europe

B.SubstancesU.K.

Measurement of PM2,5 must include at least the total mass concentration and concentrations of appropriate compounds to characterise its chemical composition. At least the list of chemical species given below shall be included.

SO4 2–Na+NH4 +Ca2+elemental carbon (EC)
NO3 –K+Cl–Mg2+organic carbon (OC)