Table 5.
Results for roofing felt extractions with ultrapure water, measured with a PAL SPME Arrow (250 μm × 20 mm, 10.2 μL): leached concentrations (estimated from calibrations for naphthalene and acenaphthylene for all other compounds) and relative standard deviations (RSD) at calculated concentrations
| Compound | CAS Nr. | Concentration leached into water per gram (ng L−1) | RSD (%) |
|---|---|---|---|
| Naphthalene | 91-20-30 | 15 | 5.2 |
| 2-Vinylnaphthalene | 827-54-3 | 27 | 4.4 |
| Biphenylene | 259-79-0 | 14 | 9.4 |
| [2-(Naphth-2-yl)vinyl]-methyl sulfone | Not available | 13 | 4.9 |
| 1-Isoquinolinecarbonitrile | 1198-30-70 | 24 | 5.2 |
| 5-Isoquinolinecarbonitrile | 27655-41-0 | 13 | 4.6 |
| Benz(a)azulene | 246-02-6 | 16 | 5.1 |
| Acenaphthylene | 208-96-8 | 38 | 5.6 |
| 2,3-Naphthalenedicarbonitrile | 22856-30-0 | 96 | 4.0 |
| Diazene, 1-methoxy-2-[2-(1-naphthyl)ethenyl]-2-oxide- | Not available | 14 | 3.3 |