Table 3.
Concentrations (ng/g lipid) of six PCB congenersa in blood of adolescent boys from Chapaevsk, Russia
| PCB congener (IUPAC #) | Average DL | # of Samples above the DLb | Median Concentration (ng/g lipid) | Mean (SD) Concentration (ng/g lipid) |
| PCB 28 | 20.0 | 1/24 | 10.6 | 11.9 (6.33) |
| PCB 74 | 11.0 | 14/27 | 10.8 | 14.8 (10.8) |
| PCB 99 | 11.0 | 27/27 | 27.7 | 34.1 (22.5) |
| PCB 138 | 18.0 | 21/27 | 29.6 | 39.4 (22.2) |
| PCB 153 | 19.8 | 27/27 | 51.2 | 64.5 (30.7) |
| PCB 180 | 11.0 | 23/27 | 17.7 | 22.8 (14.9) |
| Sum of 6 congeners | 136 | 168 (99.3) |
Abbreviations: DL, detection limit
aPCB congeners include 6 prevalent or indicator congeners (DIN 51 527, 1987)
bResults for some samples could not be reported because one or more of the analytical QA/QC criteria were not met. Therefore, the denominator may be less than 30.