|Title:||Liquid-gas partition coefficients of volatile organic compounds : using proton-transfer-reaction mass-spectrometry (PTR-MS)|
|Authors :||Karl, Thomas|
|Published in :||International journal of mass spectrometry|
|Publisher / Ed. Institution :||Wiley|
|Publisher / Ed. Institution:||Chichester|
|License (according to publishing contract) :||Licence according to publishing contract|
|Type of review:||Peer review (Publication)|
|Subjects :||Coffee; PTR-MS|
|Subject (DDC) :||540: Chemistry|
|Abstract:||Liquid-gas partition coefficients (HLC) of volatile organic compounds (VOCs) in water-air systems are determined using a novel dynamic approach by coupling a stripping cell directly to a proton-transfer-reaction mass spectrometer (PTR-MS). Two complementary set-ups are evaluated, one suited for determining HLCs of highly volatile compounds (<10 M/atm), the second adapted for medium to low volatile compounds (10-1000 M/atm). We validated the method using 2-butanone, investigated the temperature dependence of various HLCs and applied the stripping technique to a series of VOCs. Compared to alternative state-of-the-art techniques the present approach has the advantage of being simple, fast and less prone to artefacts. Furthermore, it allows to quantify volatile compounds in the headspace without calibration or addition of standards|
|Departement:||Life Sciences und Facility Management|
|Publication type:||Article in scientific Journal|
|Appears in Collections:||Publikationen Life Sciences und Facility Management|
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