Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.1002/(SICI)1521-4168(19990401)22:4<205::AID-JHRC205>3.0.CO;2-2 |
| Title (Primary) | Membrane extraction combined with thermodesorption / gas chromatography and mass selective detection for the analysis of volatile organic compounds in water |
| Author | Hauser, B.; Popp, P. |
| Source Titel | Journal of High Resolution Chromatography |
| Year | 1999 |
| Department | ANA |
| Volume | 22 |
| Issue | 4 |
| Page From | 205 |
| Page To | 212 |
| Language | englisch |
| Abstract | The range of application of a commercial thermodesorption-cryofocussing unit connected to a gas chromatograph/mass selective detector was extended to water analysis by using it in conjunction with membrane extraction. A flow of nitrogen passes through a silicone hollow fiber immersed in the water sample and extracted volatile organic compounds are enriched in a sorption tube mounted on top of the extraction cell. The sorption tube is then placed in the thermodesorption unit and analyzed by GC/MS. The optimal extraction parameters of this combined method were found to be 30 min extraction at 20°C with a stirring speed of 1,250 rpm and a flow rate of 100 mL/min nitrogen using a silicone hollow fiber of 0.3 m length. Under these conditions the reproducibility of the method was 5.2–10.5% RSD. The linear dynamic range of the optimized method spans three orders of magnitude and detection limits were found to be 0.02–0.1 μg/L for cis/trans-1,2-dichloroethene, benzene, trichloroethene, chlorobenzene, bromobenzene, ethylbenzene, 1,1,2,2-tetrachloroethane, and 1,2/1,4-dichlorobenzene. The method was found to be suitable for compounds with boiling points up to 220°C as memory effects increased considerably from dichloro- to hexachlorobenzene. Highly contaminated groundwater samples were analyzed. Quantitative results corresponded well with those achieved with conventional headspace-GC/FID. |
| Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=8009 |
| Hauser, B., Popp, P. (1999): Membrane extraction combined with thermodesorption / gas chromatography and mass selective detection for the analysis of volatile organic compounds in water J. High Resolut. Chromatogr. 22 (4), 205 - 212 10.1002/(SICI)1521-4168(19990401)22:4<205::AID-JHRC205>3.0.CO;2-2 |
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