| Share | Phrase |
|---|
| 30.61% | toxic [producing effect] component |
| 18.43% | toxic [producing effect] emission |
| 15.17% | toxic [producing effect] substance |
| 7.20% | toxic [producing effect] gas |
| 6.79% | toxic [producing effect] waste |
| 6.64% | toxic [producing effect] material |
| 6.05% | toxic [producing effect] compound |
| 3.55% | toxic [producing effect] oxide |
| 3.25% | toxic [producing effect] chemical |
| 2.26% | toxic [producing effect] constituent |