title: Degradation of the adsorbent Tenax TA by nitrogen oxides, ozone, hydrogen peroxide, OH radical, and limonene oxidation products.
abstract: 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).
authors.affiliation: Department of Indoor Climate, National Institute of Occupational Health, Lersø Parkallø 105, DK-2100 Copenhagen ø, Denmark.
authors.forename: Jacob G
authors.initials: JG
authors.lastname: Klenø
authors.forename: Peder
authors.initials: P
authors.lastname: Wolkoff
authors.forename: Per A
authors.initials: PA
authors.lastname: Clausen
authors.forename: Cornelius K
authors.initials: CK
authors.lastname: Wilkins
authors.forename: Thorvald
authors.initials: T
authors.lastname: Pedersen
mesh_terms: 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*
chemical_list: 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