Research Article
A Study of the Critical Uncertainty Contributions in the Analysis of PCBs in Ambient Air
Table 2
Ions monitored in GC-MS single ion monitoring mode.
| | Group | PCB congener(s) measured | (1) | (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 | (1) | (2) |
| | d14-p-terphenyl | Internal standard | 164.1 | 162.1 | | d10-acenapthene | Injection standard 1 | 224.2 | — | | d12-perylene | Injection standard 2 | 264.1 | — |
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