Table 2. Mass-to-Charge Ratios and Ion Species for 10 mg/L Chlortoluron (212 u) and 10 mg/L Isoproturon (206 u) in 20% Water and 80% Methanol.
| m/z | Ion species | Description |
|---|---|---|
| 108 | S+ | Solvent peak |
| 207 | [MI + H]+ | Protonated isoproturon |
| 213 | [MC + H]+ | Protonated chlortoluron |
| 229 | [MI + Na]+ | Isoproturon as sodium adduct |
| 235 | [MC + Na]+ | Chlortoluron as sodium adduct |
| 314 | [MI + S]+ | Isoproturon solvent cluster |
| 320 | [MC + S]+ | Chlortoluron solvent cluster |
| 413 | [2MI + H]+ | Protonated isoproturon dimer |
| 419 | [MI + MC + H]+ | Mixed protonated dimer |
| 435 | [2MI + Na]+ | Isoproturon dimer as sodium adduct |
| 441 | [MI + MC + Na]+ | Mixed dimer as sodium adduct |