Emissions of the main air pollutants by sector group in the EEA-33

Note:
NH3: ammonia;
NMVOCs: non-methane volatile organic compounds, such as benzene, ethanol, etc.
NOx: nitrogen oxides is a generic term for the mono-nitrogen oxides NO and NO2;
PM2.5: fine particular matter consists of fine particles with a diameter of 2.5 micrometers or less;
SO_x: sulphur oxides is a term that refers to many types of sulphur- and oxygen-containing components (SO, SO₂, SO₃, S₇O₂, S₆O₂, S₂O₇, etc.).

In previous version of this indicator (up to 2015), a separate sector, 'Solvent and product use', was included. This is now part of the 'Industrial processes and product use' sector.