Tab. IV.9.1.1 Stations with average annual concentrations of VOC
in the ambient air
Volatile organic compound | Annual average [µg.m-3] |
|||||||||||
Košetice | Praha 4-Libuš | |||||||||||
1995 | 2000 | 2005 | 2010 | 2015 | 1995 | 2000 | 2005 | 2010 | 2015 | |||
Alkane | Ethane | 2.33 | 1.83 | 2.08 | 2.53 | 2.20 | 3.62 | 2.75 | 2.43 | 1.94 | 1.97 | |
Propane | 1.80 | 1.28 | 1.21 | 1.28 | 1.10 | 2.15 | 1.71 | 1.65 | 1.82 | 1.06 | ||
Butane | 1.16 | 0.76 | 0.60 | 0.71 | 1.04 | 1.76 | 1.35 | 1.02 | 1.15 | 1.15 | ||
2.2-Dimethylbutane | 0.07 | 0.07 | 0.05 | 0.04 | 0.18 | 0.14 | 0.11 | 0.06 | ||||
Pentane | 0.39 | 0.29 | 0.35 | 0.30 | 1.21 | 0.79 | 0.52 | 1.74 | 0.32 | |||
2+3 - Methylpentane | 0.05 | 0.03 | 0.06 | 0.06 | 0.90 | 0.83 | 0.47 | 0.31 | 0.22 | |||
Hexane | 0.17 | 0.09 | 0.11 | 0.07 | 0.60 | 0.41 | 0.16 | 0.18 | 0.09 | |||
Heptane | 0.05 | 0.03 | 0.06 | 0.06 | 0.30 | 0.14 | 0.07 | 0.14 | 0.08 | |||
Octane | 0.05 | 0.02 | 0.05 | 0.10 | 0.12 | 0.06 | 0.09 | 0.11 | ||||
Alkene | Ethene | 1.28 | 0.82 | 0.78 | 0.55 | 0.55 | 2.52 | 1.69 | 1.32 | 0.45 | 0.62 | |
Propene | 0.32 | 0.21 | 0.15 | 0.16 | 0.12 | 0.68 | 0.45 | 0.34 | 0.30 | 0.14 | ||
sum of Butene | 0.20 | 0.14 | 0.20 | 0.18 | 0.87 | 0.51 | 0.42 | 0.38 | 0.26 | |||
sum of Pentene | 0.05 | 0.05 | 0.07 | 0.02 | 0.26 | 0.27 | 0.14 | 0.04 | ||||
Isoprene | 0.14 | 0.11 | 0.09 | 0.13 | 0.17 | 0.34 | 0.38 | 0.47 | 0.37 | |||
Arene | Benzene | 1.04 | 0.74 | 0.42 | 0.58 | 0.41 | 1.51 | 1.20 | 0.62 | 0.72 | 0.42 | |
Toluene | 0.99 | 0.60 | 0.31 | 0.40 | 0.30 | 2.07 | 1.63 | 0.86 | 0.94 | 0.53 | ||
Ethylbenzene | 0.12 | 0.06 | 0.06 | 0.19 | 0.42 | 0.37 | 0.19 | 0.18 | 0.27 | |||
m.p-Xylene | 1.28 | 0.82 | 0.78 | 0.55 | 0.55 | 1.42 | 0.92 | 0.55 | 0.57 | 0.71 | ||
o-Xylene | 0.10 | 0.05 | 0.04 | 0.29 | 0.33 | 0.16 | 0.14 | 0.35 |