Table 1.
The twenty most frequently detected PCB congeners in air and their potential sources
| Major Sources | Detection in | ||
|---|---|---|---|
| Paint pigments | Human serum | ||
| 52 | Aroclors 1016, 1242, 1248, 1254 | Y | Y |
| 20/28 | Aroclors 1016, 1242, 1248 | Y | Y |
| 11 | Pigment and dye production | Y | Y |
| 95 | Aroclor 1254 | Y | Y |
| 31 | Aroclors 1016, 1242, 1248 | Y | Y |
| 18/30 | Aroclors 1016, 1242 | Y | Y |
| 8 | Aroclors 1221, 1016, 1242 | Y | Y |
| 61/70/74/76 | Aroclors 1242, 1248, 1254 | Y | Y |
| 3 | Aroclor 1221 | Y | Y |
| 4 | Aroclor 1221, 1016, 1242 | Y | Y |
| 90/101/113 | Aroclor 1254 | Y | Y |
| 21/33 | Aroclors 1016, 1242 | Y | Y |
| 16 | Aroclors 1016, 1242 (>3%) | Y | Y |
| 15 | Aroclors 1016, 1242 | Y | Y |
| 110 | Aroclor 1254 | Y | Y |
| 17 | Aroclors 1016, 1242 (>3%) | ND | Y |
| 49/69 | Aroclors 1016, 1248 (>3) | ND | Y |
| 83/99 | Aroclor 1254 | ND | Y |
| 118 | Aroclor 1254 | Y | Y |
1) Congeners were ranked by frequency of occurrence in analyzed air samples.
2) For the co-eluting peaks, the bolded congeners are believed to be primary congeners.
3) Y: detected; ND: non-detectable