Division DEFINITIONS FOR CERTAIN AIR POLLUTANTS
United Kingdom
For the purpose of these BAT conclusions and for the BAT-AELs reported in Sections 1.2 to 1.9, the following definitions apply:
| NOX expressed as NO2 | The sum of nitrogen oxide (NO) and nitrogen dioxide (NO2) expressed as NO2 |
| SOX expressed as SO2 | The sum of sulphur dioxide (SO2) and sulphur trioxide (SO3) expressed as SO2 |
| Hydrogen chloride expressed as HCl | All gaseous chlorides expressed as HCl |
| Hydrogen fluoride expressed as HF | All gaseous fluorides expressed as HF |