TABLE 1.
Molecular ions and product ions of o-methylated PAH catechols detected by LC/MS/MS
| O-Methylated catechols of quinones | Molecular ions m/z, [M + H]+ | Product ions m/z |
||
|---|---|---|---|---|
| [M + H-15]+ | [M + H − 32]+ | [M + H − 32 − 28]+ | ||
| NP-1,2-dione (1) | 175 | 143 | 115 | |
| C-1,2-dione (2) | 275 | 243 | 215 | |
| C-3,4-dione (3) | 275 | 243 | 215 | |
| 5MC-7,8-dione (4) | 289 | 257 | 229 | |
| BA-3,4-dione (5) | 275 | 243 | 215 | |
| 7MBA-3,4-dione (6) | 289 | 257 | 229 | |
| 12MBA-3,4-dione (7) | 289 | 274 | 257 | 229 |
| DMBA-3,4-dione (8) | 303 | 288 | 271 | 243 |
| B[c]Ph-3,4-dione (9) | 275 | 243 | 215 | |
| B[a]P-7,8-dione (10) | 299 | 267 | 239 | |
| B[g]C-11,12-dione (11) | 325 | 293 | 265 | |