Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.1021/je800623x |
| Title (Primary) | Determination of temperature-dependent Henry's law constant of four oxygenated solutes in water using headspace solid phases microextraction technique |
| Author | Böhme, A.; Paschke, A.; Vrbka, P.; Dohnal, V.; Schüürmann, G. |
| Source Titel | Journal of Chemical and Engineering Data |
| Year | 2008 |
| Department | OEC |
| Volume | 53 |
| Issue | 12 |
| Page From | 2873 |
| Page To | 2877 |
| Language | englisch |
| Abstract | Dimensionless Henry's law constants (air/water partition coefficient K-aw) of four volatile organic compounds (VOCs), namely, methyl tert-butyl ether, vinyl acetate, dimethyl carbonate, and diethyl carbonate, are reported. Applying headspace solid-phase microextraction (HS-SPME) in combination with gas chromatographic analysis, whose response was calibrated by the use of standard gas mixtures, K-aw values (0.001 < K-aw < 0.1) were determined in the temperature range of (10 to 45)degrees C. Replicated measurements showed a good repeatability (average relative standard deviation 2.5%, n = 144). The results were checked through additional K-aw measurements carried out using the inert gas stripping (IGS) technique at 25 degrees C, receiving intermethod deviations < 5%. Furthermore, approximate values of hydration enthalpies Delta H-hyd and hydration entropies AS(hyd) for the four VOCs were derived from linear van't Hoff fits of the K-aw(T) data, demonstrating an enthalpy-driven partition process. |
| Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=828 |
| Böhme, A., Paschke, A., Vrbka, P., Dohnal, V., Schüürmann, G. (2008): Determination of temperature-dependent Henry's law constant of four oxygenated solutes in water using headspace solid phases microextraction technique J. Chem. Eng. Data 53 (12), 2873 - 2877 10.1021/je800623x |
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