Table 2.
Contaminants emitted by Flexfilm bags [ppb]. Compounds are ordered with respect to increasing retention time. ʺ—ʺ denotes that the VOC was not detected, whereas ʺ<LOQʺ stands for VOC level below LOQ
| New bag sampling time [h] |
Preconditioned bag sampling time [h] |
||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| VOC | CAS | 0 | 6 | 12 | 24 | 0 | 6 | 24 | VOC emission × 10−12 [g × h−1 × cm−2] | ||||||
| Carbonyl sulfide (COS) | 463-58-1 | Not quantified | |||||||||||||
| Acetaldehyde | 75-07-0 | Not quantified | |||||||||||||
| 2-Butene, (E) | 624-64-6 | — | 1.6 | 2.0 | 2.3 | — | — | 0.6 | 0.39 | ||||||
| 2-Butene, (Z) | 590-18-1 | — | 3.6 | 6.7 | 12.2 | — | 0.8 | 3.6 | 1.53 | ||||||
| n-Butane | 106-97-8 | 1.6 | 6.2 | 11.1 | 19.1 | <LOQ | 3.7 | 8.1 | 2.62 | ||||||
| Propanal | 123-38-6 | <LOQ | 1.4 | 2.1 | 2.4 | — | — | — | 0.48 | ||||||
| Acetone | 67-64-1 | 14 | 75 | 102 | 140 | — | 9.9 | 19 | 25.7 | ||||||
| Carbon disulfide (CS2) | 75-15-0 | Not quantified | |||||||||||||
| Methyl acetate | 79-20-9 | <LOQ | <LOQ | 0.3 | 0.4 | — | — | — | 0.1 | ||||||
| n-Pentane | 109-66-0 | 0.4 | 2.0 | 3.4 | 5.5 | 0.4 | 1.7 | 3.4 | 0.99 | ||||||
| 2-Propenal, 2-methyl- | 78-85-3 | <LOQ | <LOQ | 0.3 | 0.4 | — | — | <LOQ | 0.1 | ||||||
| 3-Buten-2-one | 78-94-4 | <LOQ | <LOQ | 0.6 | 0.6 | — | <LOQ | <LOQ | 0.19 | ||||||
| Butanal | 123-72-8 | <LOQ | 2.2 | 3.6 | 4.5 | — | 1.3 | 1.3 | 1.01 | ||||||
| 2-Butanone | 78-93-3 | 0.5 | 1.8 | 2.9 | 4.1 | — | 0.6 | 1.0 | 0.85 | ||||||
| Pentane, 2-methyl- | 107-83-5 | <LOQ | 0.7 | 1.1 | 1.8 | <LOQ | 1.4 | 3.0 | 0.41 | ||||||
| 1-Hexene | 592-41-6 | <LOQ | 0.9 | 1.4 | 2.2 | <LOQ | 0.8 | 1.6 | 0.49 | ||||||
| Pentane, 3-methyl- | 96-14-0 | <LOQ | 1.1 | 2.0 | 3.1 | 0.4 | 1.7 | 3.8 | 0.68 | ||||||
| Cyclopentane, methyl- | 96-37-7 | 1.7 | 6.6 | 11.1 | 17.3 | 2.0 | 9.2 | 18.7 | 3.78 | ||||||
| n-Hexane | 110-54-3 | 3.8 | 17.1 | 28.6 | 44.8 | 4.8 | 22.7 | 45.6 | 10 | ||||||
| Methyl methacrylate | 80-62-6 | 1.6 | 6.7 | 10.1 | 14.6 | 0.4 | 1.4 | 2.6 | 4.22 | ||||||
| Toluene | 108-88-3 | <LOQ | 1.2 | 1.8 | 2.4 | <LOQ | 0.3 | 0.5 | 0.67 | ||||||
| Heptane, 4-methyl- | 589-53-7 | — | <LOQ | 1.2 | 2.0 | — | 1.2 | 2.4 | 0.53 | ||||||
| Heptane, 2,4-dimethyl- | 2213-23-2 | 1.9 | 8.9 | 14.8 | 23.2 | 3.4 | 14.8 | 30.4 | 7.76 | ||||||
| 1-Heptene, 2,4-dimethyl- | 19549-87-2 | — | <LOQ | 0.6 | 0.8 | <LOQ | 0.5 | 1.1 | 0.26 | ||||||
| Octane, 4-methyl- | 2216-34-4 | <LOQ | 2.8 | 4.5 | 6.8 | 1.0 | 4.1 | 8.6 | 2.37 | ||||||
| Caprolactam | 105-60-2 | Not quantified | |||||||||||||
| Dodecane | 112-40-3 | <LOQ | 3.3 | 5.3 | 6.4 | 2.0 | 3.3 | 5.2 | 3.51 | ||||||