Table 2.
Ions monitored in GC-MS single ion monitoring mode.
| Group | PCB congener(s) measured | m/z (1) | m/z (2) |
|---|---|---|---|
| Mono (Cl1) PCBs | 1, 3 | 188.1 | 152.1 |
| Di (Cl2) PCBs | 4, 15 | 222.0 | 152.1 |
| Tri (Cl3) PCBs | 19, 37 | 255.9 | 186.0 |
| Tetra (Cl4) PCBs | 54, 77, 81 | 291.9 | 220.0 |
| Penta (Cl5) PCBs | 104, 105, 114, 118, 123, 126 | 325.9 | 254.0 |
| Hexa (Cl6) PCBs | 155, 156, 157, 167, 169 | 359.8 | 289.9 |
| Hepta (Cl7) PCBs | 188, 189 | 393.9 | 323.9 |
| Octa (Cl8) PCBs | 202, 205 | 429.8 | 359.9 |
| Nona (Cl9) PCBs | 206, 208 | 463.8 | 393.8 |
| Deca (Cl10) PCB | 209 | 499.6 | 429.8 |
| Analyte | Use | m/z (1) | m/z (2) |
| d14-p-terphenyl | Internal standard | 164.1 | 162.1 |
| d10-acenapthene | Injection standard 1 | 224.2 | — |
| d12-perylene | Injection standard 2 | 264.1 | — |