| Substance | Formula | EF kg SO2/kg |
| Sulphur dioxide | SO2 | 1 |
| Sulphur trioxide | SO3 | 0.8 |
| Nitrogen dioxide | NO2 | 0.7 |
| Nitrogen oxide | NOx (x is assumed to be 2) | 0.7 |
| Nitrogen oxide | NO | 1.07 |
| Ammonia | NH3 | 1.88 |
| Hydrogen fluoride | HF | 1.6 |
| Hydrogen chloride | HCl | 0.88 |