Quantification and mechanisms of BTEX distribution between aqueous and gaseous phase in a dynamic system
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2016
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In this study an analytical system was developed for determination of quantitative characteristics of BTEX distribution between gaseous and aqueous phase. Dynamic dilution system was coupled with Proton Transfer Reaction Mass Spectrometer (PTR-MS) to provide conditions for partitioning between the two phases resembling the interactions during rainfall. The amount of the target species retained in water were significantly higher than suggested by theoretical predictions indicating that dissolution is not the major mechanism of gaseous BTEX uptake in aqueous phase. Distribution coefficients and enrichment factors were calculated, and the possible mechanisms of partitioning were considered. As concluded, the interfacial adsorption and van der Waals interactions play significant role, whereas hydrogen-bond interactions have no major contribution to BTEX partitioning. (C) 2015 Elsevier Ltd. All rights reserved.
Ključne reči:
BTEX / Distribution coefficient / Partitioning mechanisms / PTR-MSIzvor:
Chemosphere, 2016, 144, 721-727Izdavač:
- Pergamon-Elsevier Science Ltd, Oxford
Projekti:
- Geohemijska ispitivanja sedimentnih stena - fosilna goriva i zagađivači životne sredine (RS-176006)
- Istraživanje klimatskih promena i njihovog uticaja na životnu sredinu - praćenje uticaja, adaptacija i ublažavanje (RS-43007)
- Institute of Public Health of Belgrade, Serbia
DOI: 10.1016/j.chemosphere.2015.09.042
ISSN: 0045-6535
PubMed: 26408979