Degradation of the adsorbent Tenax TA by nitrogen oxides, ozone, hydrogen peroxide, OH radical, and limonene oxidation products.
The degradation of the adsorbent Tenax TA was studied qualitatively by sampling oxidants common in indoor air followed by thermal desorption and gas chromatography. A total of 25 degradation products were identified. Several degradation products not reported previously were identified: 9 for nitrogen dioxide; 11 for ozone; 2 for hydrogen peroxide; 12 for hydroxyl radical; 1 for ozone-limonene mixtures, but none for nitrogen oxide. Whereas ozone shows a complex degradation of the adsorbent, hydrogen peroxide and limonene--ozone mixtures show few products. Nitrogen dioxide and the hydroxyl radical behave almost identically and produce 2,6-diphenyl-p-benzoquinone as the major degradation product. Reactant specific degradation products were identified for ozone (11) and nitrogen dioxide (1).
Klenø
Jacob G
JG
Department of Indoor Climate, National Institute of Occupational Health, Lersø Parkallø 105, DK-2100 Copenhagen ø, Denmark.
Wolkoff
Peder
P
Clausen
Per A
PA
Wilkins
Cornelius K
CK
Pedersen
Thorvald
T
D000393:Air Pollutants; D002273:Carcinogens / Q000737:chemistry*; D002849:Chromatography, Gas; D053138:Cyclohexenes; D006861:Hydrogen Peroxide / Q000737:chemistry*; D017665:Hydroxyl Radical / Q000737:chemistry*; D000077222:Limonene; D009589:Nitrogen Oxides / Q000737:chemistry*; D016877:Oxidants / Q000737:chemistry*; D010083:Oxidants, Photochemical / Q000737:chemistry*; D010126:Ozone / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D013696:Temperature; D013729:Terpenes / Q000737:chemistry*
D000393:Air Pollutants; D002273:Carcinogens; D053138:Cyclohexenes; D009589:Nitrogen Oxides; D016877:Oxidants; D010083:Oxidants, Photochemical; D011108:Polymers; D013729:Terpenes; C010514:tenax; D017665:Hydroxyl Radical; D010126:Ozone; D000077222:Limonene; D006861:Hydrogen Peroxide