Dynamic Solid Phase Microextraction Sampling for Reactive Terpenes in the Presence of Ozone
Abstract
Dynamic gas sampling using solid phase microextraction (SPME) was evaluated for recovery of reactive terpenes and terpenoids in the presence of ozone. for limonene, α-terpineol and dihydromyrcenol in the 20-60 ppb range, this method achieves >80% recovery for ozone mixing ratios up to 100 ppb. Both the experimental results and a model analysis indicate that higher ozone concentrations and longer sampling times result in lower percent recovery. Typically greater than 90% recovery and ppb level method detection limits were achieved with a 5 min sample time. Increasing the flow rate from 100 to 400 sccm flow (5-20 cm s-1) through the active sampler did not significantly affect sensitivity or recovery in most cases, probably due to negligible mass-transfer improvements. the recovery for each compound improves when sampling from a mixture of different species than that from a single compound sample. This may be due to competition for ozone amongst adsorbed species. Dynamic SPME sampling can improve detection and quantification of terpenes in reactive environments, especially for low vapor pressure (<5 mm Hg at 25 °C) compounds that can be adsorbed to ozone scrubbers used in other methods. © 2010 Elsevier B.V.
Recommended Citation
S. Shu and G. Morrison, "Dynamic Solid Phase Microextraction Sampling for Reactive Terpenes in the Presence of Ozone," Talanta, vol. 82, no. 5, pp. 1884 - 1891, Elsevier, Oct 2010.
The definitive version is available at https://doi.org/10.1016/j.talanta.2010.08.004
Department(s)
Civil, Architectural and Environmental Engineering
Keywords and Phrases
Dihydromyrcenol; Ozone; Recovery; SPME; Terpene; α-Terpineol
International Standard Serial Number (ISSN)
0039-9140
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Elsevier, All rights reserved.
Publication Date
15 Oct 2010
