| Sulfur dioxide | SO2 |
| Hydrogen sulfide | H2S (converted to SO2 in days to weeks) |
| Carbonyl sulfide | COS or OCS |
| Dimethyl sulfide | CH3SCH3 |
| Methyl mercaptan | CH3SH |
| Carbon disulfide | CS2 |
| Dimethyl disulfide | CH3SSCH3 |
| Nitric oxide | NO |
| Nitrogen dioxide | NO2 |
| Nitrous oxide | N20 |
| Nitrogen trioxide | NO3 |
| Ammonia | NH3 |