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Table 3

VSCs and VOCs investigated in AC filters, biofilters and BTFs

CompoundMedian concentration (μg/m3)Appearance frequency (%)95th percentile odour activity valueOdour threshold value (μg/m3) (Nagata 2003)Odorant rankinga (Sivret et al. 2016)
Volatile sulfurous compounds 
 Hydrogen sulfide 1,880 100 68,400 0.576 
 Methyl mercaptan 293 93.7 16,600 0.14 
 Carbon disulfide 11.0 91.7 0.053 659 
 Dimethyl sulfide 65.4 93.3 3.22 77 
 Dimethyl disulfide 8.72 91.3 5.60 8.5 
 Dimethyl trisulfide 6.40 88.5 – – N/A 
Volatile organic compounds 
 Ethylbenzene 2.37 79.9 0.16 744 
m,p-Xylene 7.35 75.7 1.45 254 
o-Xylene 0.31 33.8 0.074 1,664 
 Toluene 31.7 91.3 0.42 1,254 
 Trimethylbenzene 31.8 74.5 0.77 595 
 Trichloromethane 55.4 82.9 0.021 18,707 
 1,4-Dichlorobenzene 1.05 40.3 – – N/A 
CompoundMedian concentration (μg/m3)Appearance frequency (%)95th percentile odour activity valueOdour threshold value (μg/m3) (Nagata 2003)Odorant rankinga (Sivret et al. 2016)
Volatile sulfurous compounds 
 Hydrogen sulfide 1,880 100 68,400 0.576 
 Methyl mercaptan 293 93.7 16,600 0.14 
 Carbon disulfide 11.0 91.7 0.053 659 
 Dimethyl sulfide 65.4 93.3 3.22 77 
 Dimethyl disulfide 8.72 91.3 5.60 8.5 
 Dimethyl trisulfide 6.40 88.5 – – N/A 
Volatile organic compounds 
 Ethylbenzene 2.37 79.9 0.16 744 
m,p-Xylene 7.35 75.7 1.45 254 
o-Xylene 0.31 33.8 0.074 1,664 
 Toluene 31.7 91.3 0.42 1,254 
 Trimethylbenzene 31.8 74.5 0.77 595 
 Trichloromethane 55.4 82.9 0.021 18,707 
 1,4-Dichlorobenzene 1.05 40.3 – – N/A 

aK – Key, H – High, L – Low, M – Medium: odorant rankings based on methodology defined in Sivret et al. (2016).

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