Title: Measuring partition coefficients of VOC's and their temperature dependence by dynamic stripping and Proton-Transfer Reaction Time-of-Flight Mass Spectrometry (PTR-ToF_MS)
Authors : Wieland, Flurin
Gloess, Alexia N.
Yeretzian, Chahan
Proceedings: Contributions : 5th International Conference on Proton Transfer Reaction Mass Spectrometry and ist Applications
Pages : 259
Pages to: 260
Conference details: 5th International Conference on Proton Transfer Reaction Mass Spectrometry and ist Applications, Obergurgl, Austria, 26 January - 2 February 2011
Publisher / Ed. Institution : Innsbruck University Press
Publisher / Ed. Institution: Innsbruck
Issue Date: 2011
License (according to publishing contract) : Licence according to publishing contract
Type of review: Not specified
Language : English
Subjects : Henry law constant (hlc); Volatile organic compound (voc); Coffee; PTR-TOF-MS
Subject (DDC) : 664: Food technology
Abstract: Air-water partition coefficients play a significant role in understanding processes like aroma release from food, for many environmental phenomena or in medical analysis (breath analysis). The equilibrium of gas dissolved in a liquid (e.g. water) can be described via Henry`s Law constant (HLC). We have developed and validated a dynamic approach using a stripping cell configuration coupled on-line to a PTR-ToF-MS to measure with high accuracy the HLC of VOCs. This methodology allows the rapid determination of water-air partition coefficients, even for molecules with low volatility, and over an extended temperature range (25-90°C).
Departement: Life Sciences und Facility Management
Publication type: Conference Poster
ISBN: 978-3-902719-88-1
URI: https://digitalcollection.zhaw.ch/handle/11475/5489
Appears in Collections:Publikationen Life Sciences und Facility Management

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