期刊
JOURNAL OF ATMOSPHERIC CHEMISTRY
卷 74, 期 3, 页码 325-338出版社
SPRINGER
DOI: 10.1007/s10874-016-9344-6
关键词
Ozonolysis; Reaction products; Derivatization; alpha-Pinene; Sampling; Terpene
资金
- Intramural CDC HHS [CC999999] Funding Source: Medline
The yields of carbonyl-containing reaction products from the ozonolysis of alpha-pinene have been investigated using concentrations of ozone found in the indoor environment ([O-3] > 100 ppb). An impinger was used to collect gas-phase oxidation products in water, where the derivatization agent O-tert-butylhydroxylamine hydrochloride (TBOX) and gas chromatography-mass spectrometry were used to identify carbonyl-containing species. Seven carbonyl-containing products were observed. The yield of the primary product, pinonaldehyde was measured to be 76 %. Using cyclohexane as a hydroxyl radical (a (TM) OH) scavenger, the yield of pinonaldehyde decreased to 46 %, indicating the influence secondary OH radicals have on alpha-pinene ozonolysis products. Furthermore, the use of TBOX, a small molecular weight derivatization agent, allowed for the acquisition of the first mass spectral data of oxopinonaldehyde, a tricarbonyl reaction product of alpha-pinene ozonolysis. The techniques described herein allow for an effective method for the collection and identification of terpene oxidation products in the indoor environment.
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