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- W2116773007 abstract "A method was developed for the determination of organic halogens in water samples with the aim of minimizing matrix effects and simplifying the sample preparation technique commonly used. The method is based on the adsorption of organic halogens in modified hydrophilic divinylbenzene polymer columns and their elution with methanol. The adsorbent used enables rapid adsorption and desorption due to comparatively high operating flow rates and minimized solvent amounts. Furthermore, no additional reconcentration steps are needed. The methanol extract obtained is combusted with a standard EOX (extractable organic halogen) analyzer and the concentration of organically bound halogens is determined by microcoulometric analysis. The matrix effects are considerably reduced compared to the standard procedure (EN 1485) commonly used. A detection limit of 13 μg/L was established. Ein vereinfachtes analytisches Verfahren zur Bestimmung organisch gebundener Halogene in salzhaltigen Wasserproben Ein Verfahren zur Bestimmung halogenorganischer Verbindungen in Wasserproben wurde entwickelt. Ziel war es, den bei der konventionellen AOX-Analytik auftretenden Einfluss der Probenmatrix erheblich zu minimieren sowie die Probenpräparation zu vereinfachen. Das entwickelte Verfahren basiert auf der Adsorption halogenorganischer Verbindungen an modifizierten Divinylbenzol-Polymeren und deren Desorption mit Methanol. Das eingesetzte Adsorbens gestattet infolge hoher Flussraten die schnelle Anreicherung bzw. Elution bei minimiertem Lösungsmittelbedarf. Daher ist keine weitere Aufkonzentration des Extraktes notwendig. Der erhaltene methanolische Extrakt wird in einem gewöhnlichen EOX-Analysator verbrannt und die Konzentration halogenorganischer Verbindungen wird mikrocoulometrisch bestimmt. Die Nachweisgrenze des Verfahrens liegt bei 13 μg/L." @default.
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- W2116773007 date "2003-07-01" @default.
- W2116773007 modified "2023-09-25" @default.
- W2116773007 title "A Simplified Analytical Procedure for the Determination of Organically Bound Halogens in Salt-containing Water Samples" @default.
- W2116773007 doi "https://doi.org/10.1002/aheh.200390011" @default.
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