Table 2.
NNK (pg/100cm2) on Surfaces in Smokers’ and Nonsmokers’ Homes
| Smokers’ homes | NNK amount | Nonsmokers’ homes | NNK amount |
|---|---|---|---|
| 1 | 379 | 1 | LOD |
| 2 | 164 | 2 | LOD |
| 3 | 3,500 | 3 | LOD |
| 4 | 174 | 4 | LOD |
| 5 | 189 | 5 | LOD |
| 6 | 1,150 | 6 | LOD |
| 7 | 2,690 | 7 | LOD |
| 8 | 448 | 8 | LOD |
| 9 | 469 | 9 | LOD |
| 10 | LODa | 10 | LOD |
| 11 | 692 | 11 | LOD |
| 12 | 419 | 12 | 105 |
| 13 | 757 | 13 | LOD |
| 14 | 115 | 14 | LOD |
| 15 | 124 | 15 | LOD |
| 16 | 1,160 | 16 | LOD |
| 17 | 714 | 17 | 166 |
| 18 | 281 | 18 | 435 |
| 19 | 408 | 19 | LOD |
| 20 | 148 | ||
| 21 | 1,270 | ||
| 22 | 2,270 | ||
| 23 | 1,360 | ||
| 24 | 121 | ||
| 25 | 329 | ||
| 26 | 371 | ||
| 27 | 41 | ||
| 28 | 936 | ||
| 29 | 770 | ||
| 30 | NDb | ||
| 31 | 747 | ||
| 32 | 192 | ||
| 33 | 37 | ||
| 34 | ND | ||
| 35 | 233 | ||
| 36 | ND | ||
| 37 | 451 | ||
| Mean ± SD | 700±788 |
Note. aLOD = below limit of detection (30 pg/100cm2); NNK = 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone.
bND = Not determined due to chromatographic interference.