Table 2.
Deviation from racemic (DFR, see detailed description in the text) for chiral PCBs determined on different enantioselective columns. The last column shows the average of all values ± standard deviation.
| compound | 20B | BDM | BGB | BPM | CB | CD | average |
|---|---|---|---|---|---|---|---|
| PCB 45 | nr | 0.08 | 0.07 | nr | 0.09 | nr | 0.08±0.01 |
| PCB 84 | nr | nr | 0.04 | nr | 0.08 | 0.06 | 0.06±0.02 |
| PCB 91 | 0.13 | 0.07 | 0.10 | nr | 0.06 | 0.07 | 0.09±0.03 |
| PCB 95 | 0.16 | 0.15 | nr | nr | 0.15 | 0.15 | 0.15±0.01 |
| PCB 131 | nr | 0.01 | 0.02 | nr | nr | nr | 0.02±0.01 |
| PCB 132 | 0.14 | nr | 0.12 | 0.11 | nr | 0.11 | 0.12±0.01 |
| PCB 135 | nr | nr | 0.02 | nr | nr | 0.00 | 0.01±0.01 |
| PCB 136 | 0.08 | 0.001 | nr | nr | 0.04 | 0.04 | 0.04±0.03 |
| PCB 149 | 0.09 | 0.06 | 0.03 | 0.07 | 0.03 | 0.03 | 0.05±0.03 |
| PCB 174 | nr | 0.04 | 0.03 | nr | 0.03 | 0.03 | 0.03±0.01 |
| PCB 176 | nr | 0.21 | nr | nr | 0.17 | 0.16 | 0.18±0.03 |
| PCB 183 | nr | nr | 0.03 | nr | nr | nr | 0.03 |
1
The EF=0.5 for PCB 136 on BDM column was not included in the calculation of average EF value for this congener.