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Titolo:
Ozone removal in the sampling of parts per billion levels of terpenoid compounds: An evaluation of different scrubber materials
Autore:
Fick, J; Pommer, L; Andersson, B; Nilsson, C;
Indirizzi:
Umea Univ, Dept Chem Environm Chem, SE-90187 Umea, Sweden Umea Univ UmeaSweden SE-90187 Chem Environm Chem, SE-90187 Umea, Sweden Nalt Inst Working Life, Ctr Musculoskeletal Res, SE-90713 Umea, Sweden Nalt Inst Working Life Umea Sweden SE-90713 l Res, SE-90713 Umea, Sweden Swedish Univ Agr Sci, Dept Agr Res No Sweden Chem & Biomass, SE-90403 Umea, Sweden Swedish Univ Agr Sci Umea Sweden SE-90403 Biomass, SE-90403 Umea, Sweden
Titolo Testata:
ENVIRONMENTAL SCIENCE & TECHNOLOGY
fascicolo: 7, volume: 35, anno: 2001,
pagine: 1458 - 1462
SICI:
0013-936X(20010401)35:7<1458:ORITSO>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
VOLATILE ORGANIC-COMPOUNDS; METHYL VINYL KETONE; FOREST AIR; NATURAL HYDROCARBONS; CARBONYL-COMPOUNDS; MONOTERPENES; PRODUCTS; METHACROLEIN; DEGRADATION; OXIDATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Engineering, Computing & Technology
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Andersson, B Umea Univ, Dept Chem Environm Chem, SE-90187 Umea, Sweden Umea Univ Umea Sweden SE-90187 Chem, SE-90187 Umea, Sweden
Citazione:
J. Fick et al., "Ozone removal in the sampling of parts per billion levels of terpenoid compounds: An evaluation of different scrubber materials", ENV SCI TEC, 35(7), 2001, pp. 1458-1462

Abstract

Some reactive volatile organic compounds (VOCs) are prone to degradation during sampling in an ozone-rich environment. A wide variety of different chemicals have been used to remove the ozone prior to sampling, but the possibility of interference by such chemicals with the sampled VOCs has not beenthoroughly examined. In the present investigation, the retention/degradation of four terpenes alpha -pinene, beta -pinene, 3-carene, and limonene) and isoprene together with some of their oxidation products (alpha -pinene oxide, nopinone, 4-acetyl-1 -methylcyclohexene (AMCH) methylglyoxal, and methacrolein) has been studied, using Various ozone-removing chemicals in an attempt to evaluate their poten tial as ozone scrubbers in the sampling of ambient air. The chemicals included in this first screening and their ozone-removing capacity are as follows: Kl, MnO2, and Na2SO3 removed ozone for more than 24 h when exposed to 73-78 ppb (150-160 mug/m(3)) at a sampling flowrate of 500 mL/min. Silanized poly(1,4-phenylene sulfide) (PFS) removed ozone far 5 h, unsilanized PFS removed ozone for 1 h and 50 min, and Na2S2O3 removed ozone for 20 min. The recovery of the selected compounds with the different scrubbers was >95% for ail compounds for Kl; >95% for the terpenesoxidation products; >90% for the terpenes and isoprene for PFS; >90% for the terpenes and isoprene for MnO1 on copper nets, Na2SO3, and Na2S2O3; and <90% for the terpenes and isoprene for carulite (a commercial mixture between MnO2, CuO, and Al2O3), CuO, and indigo carmine.

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Documento generato il 06/04/20 alle ore 01:14:59