Table 2.
PCB values expressed as ng/g of dust, reported for each congener, in the different indoor environments (Columns 2–6). Columns 7 and 8 show the domestic dust average (D1 and D2) and workplace dust average (D3–D5). The reported values were associated to a method RSD of 15%.
| Compound | D1 (ng/g) | D2 (ng/g) | D3 (ng/g) | D4 (ng/g) | D5 (ng/g) | Houses Average (ng/g) | Workplaces Average (ng/g) |
|---|---|---|---|---|---|---|---|
| PCB 77+110 | 1 n.d. | 1 n.d. | 150.3 | 1 n.d. | 204.9 | 177.6 | |
| PCB 81 | 24.9 | 9.7 | 1 n.d. | 19.5 | 1 n.d | 17.3 | 9.8 |
| PCB 99 | 1 n.d. | 1 n.d. | 1 n.d. | 1 n.d. | 1 n.d. | ||
| PCB 101 | 1 n.d. | 1 n.d. | 37.4 | 1 n.d. | 1 n.d | 18.7 | |
| PCB 105 | 1 n.d. | 1 n.d. | 1 n.d. | 1 n.d. | 56.6 | 56.6 | |
| PCB 114 | 7.3 | 7.0 | 1 n.d. | 1 n.d. | 1 n.d. | 7.2 | |
| PCB 126 | 1 n.d. | 1 n.d. | 1 n.d. | 1 n.d. | 3.9 | 3.9 | |
| PCB 138 | 1 n.d. | 11.0 | 10.2 | 31.2 | 83.4 | 11.0 | 41.6 |
| PCB 146 | <2.8 | <2.8 | 1 n.d. | 3.7 | 12.7 | 8.2 | |
| PCB 151 | 1 n.d. | 1 n.d. | 1 n.d. | 1 n.d. | 1 n.d. | ||
| PCB 156 | 1 n.d. | 4.7 | 1 n.d. | 5.1 | 11.2 | 4.7 | 8.1 |
| PCB 157 | 1 n.d. | 8.5 | 1 n.d. | 1 n.d. | 8.8 | 8.5 | 8.8 |
| PCB 167 | 1 n.d. | 10.1 | 1 n.d. | 1 n.d. | 13.3 | 10.1 | 13.3 |
| PCB 169 | 1 n.d. | 1 n.d. | 1 n.d. | 1 n.d. | 1 n.d. | ||
| PCB 170+190 | 4.4 | 5.2 | 1 n.d. | 13.8 | 24.7 | 4.8 | 19.3 |
| PCB 177 | 1 n.d. | 2.9 | 1 n.d. | 6.0 | 17.6 | 2.9 | 11.8 |
| PCB 180 | 8.7 | 12.7 | 5.0 | 33.0 | 65.1 | 10.7 | 34.4 |
| PCB 183 | 18.3 | 17.4 | 1 n.d. | 19.8 | 24.8 | 17.9 | 22.3 |
| PCB 187 | <1.4 | <1.4 | 1 n.d. | 8.2 | 19.0 | 13.6 | |
| 2 ΣPCBs | 63.6 | 89.3 | 203.0 | 140.4 | 546.1 | 76.4 | 296.5 |
Values between LOD and LOQ were considered positive and reported as <LOQ value. 1 n.d., not detected. 2 ΣPCBs is the sum of PCB concentrations.