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Preliminary Interlaboratory Trial for ISO/DIS 12010: Determination of Short Chain Polychlorinated Alkanes (SCCP) in Water |
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| Authors: | Sabine Geiß Nicole Lettmann Aurélien Rey Herbert Lepper Birgit Körner Silvio Mais Theodor Prey Bettina Hilger Moana Engelke Stephan Lebertz Claudine Chatellier George Sawal Dirk Löffler Tom Schillings |
| Affiliation: | 1. Thüringer Landesanstalt für Umwelt und Geologie, Umweltanalytik/Umweltradioaktivit?t, Jena, Germany;2. Kooperationslabor Ruhrverband, Emschergenossenschaft/Lippeverband, Essen, Germany;3. CTC, Lyon Cedex, France;4. Landesanstalt für Umwelt, Messungen und Naturschutz Baden‐Württemberg (LUBW), Karlsruhe, Germany;5. TZW, Abteilung Analytik, Karlsruhe, Germany;6. Staatliche Betriebsgesellschaft für Umwelt und Landwirtschaft, Neus?rnewitz, Germany;7. FTU Forschungsgesellschaft Technischer Umweltschutz GmbH, Wien, Austria;8. Bayerisches Landesamt für Gesundheit und Lebensmittelsicherheit, Sachgebiet Chemikaliensicherheit und Toxikologie, München, Germany;9. Landeslabor Berlin‐Brandenburg, Frankfurt(Oder), Germany;10. SGS Institut Fresenius GmbH, Taunusstein, Germany;11. INERIS, Direction des Risques Chroniques, “Caractérisation des milieux et des sources Innovation pour la mesure environnementale”, Paris, France;12. Umweltbundesamt (UBA) FG II 25, Berlin, Germany;13. Bundesanstalt für Gew?sserkunde, Koblenz, Germany;14. Landesbetrieb für Hochwasserschutz und Wasserwirtschaft Sachsen‐Anhalt, Magdeburg, Germany |
| Abstract: | A first preliminary interlaboratory trial was planned to prepare ISO/DIS 12010: Water quality – determination of short chain polychlorinated alkanes (SCCP) in water – method using GC/MS and electron capture negative ionisation (ECNI). The task was to determine the sum of short chain polychlorinated n‐alkanes with carbon chain lengths of C10–C13 and a chlorine content between 49 and 67% in water by GC‐ECNI‐MS and quantification by multiple linear regression described in ISO/DIS 12010 as the compulsory method. Distributed samples were obtained from a real water extract spiked with a target concentration of 0.4 µg/mL sum of SCCP, i.e. the environmental quality target level according to the Water Framework Directive. The interlaboratory trial included the calibration, a column chromatographic clean up, a concentration step and an integration of chromatographic unresolved humps as well as the quantification with multiple linear regression. Reproducibility standard deviations between 21.5 and 22.9% were achieved by 17 participating laboratories from four countries. The method outlined no significant difference of the results between the standard solution and a real water matrix extract. On the basis of this succeeded preliminary interlaboratory trial the final interlaboratory trial for validation of ISO 12010 was prepared in autumn 2010. |
| Keywords: | Chloroalkanes Chloroparaffins European Water Framework Directive PCA SCCP |