Table 2.
Biogenic VOCs | Biogenic VOC oxidation products | ||||
---|---|---|---|---|---|
Isoprene | τOH | τO3 | τOH | τO3 | |
1.4 h | 1.3 d | Methacrolein | 4.1 h | 15 d | |
Methyl vinyl ketone | 6.8 h | 3.6 d | |||
3-Methyl furan | 1.5 h | 19 h | |||
Monoterpenes | τOH | τO3 | τOH | τO3 | |
Limonene | 49 min | 2 h | Limononaldehyde | 1.26 h | 2 d |
Terpinolene | 37 min | 13 min | 4-Methyl-3-cyclohexenone | 1.5 h | n.r. |
α-Pinene | 2.6 h | 4.6 h | Pinonaldehyde | 2.9 h | >2.4 year |
β-Pinene | 1.8 h | 1.1 d | Nopinone | 12 h | >4.5 year |
Δ3-Carene | 1.6 h | 11 h | Caroaldehyde | 2.9 h | >2.3 year |
Sabinene | 1.2 h | 4.6 h | Sabinaketone | 18.8 d | >0.9 year |
Camphene | 2.6 h | 18 d | Camphenilone | 2.3 d | >4.5 year |
Sesquiterpenes | τOH | τO3 | |||
β-Caryophyllene | 42 min | 2 min | |||
α-Humulene | 28 min | 2 min | |||
α-Cedrene | 2.1 h | 14 h | |||
α-Copaene | 1.5 h | 2.5 h | |||
Alcohols | τOH | τO3 | τOH | τO3 | |
2-Methyl-3-buten-2-ol | 2.4 h | 1.7 d | 5-Methyl-5-vinyltetrahydrofuran-2-ol | 1.56 d | 8.7 d |
cis-3-Hexen-1-ol | 1.3 h | 6.2 h | |||
Linalool | 52 min | 55 min | |||
1,8-Cineole | 1.0 d | >110 d | |||
Methanol | 12 d | >4.5 year |
Data from Atkinson & Arey (2003), Calogirou et al. (1999) and Carrasco et al. (2007).
n.r., not reactive; VOC, volatile organic compound.