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EN ISO 20596-2:2022

Water quality - Determination of cyclic volatile methylsiloxanes in water - Part 2: Method using liquid-liquid extraction with gas chromatography-mass spectrometry (GC-MS) (ISO 20596-2:2021) EN ISO 20596-2:2022

Publication date:   Oct 17, 2022

General information

60.60 Standard published   Sep 21, 2022

CEN

CEN/TC 230 Water analysis

European Norm

13.060.50   Examination of water for chemical substances

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Scope

This document specifies a method for the determination of certain cyclic volatile methylsiloxanes (cVMS) in environmental water samples with low density polyethylene (LDPE) as a preservative and subsequent liquid-liquid extraction with hexane containing 13C-labeled cVMS as internal standards. The extract is then analysed by gas chromatography-mass spectrometry (GC-MS).
NOTE Using the 13C-labeled, chemically identical substances as internal standards with the same properties as the corresponding analytes, minimizes possible substance-specific discrimination in calibrations. Since these substances are least soluble in water, they are introduced via the extraction solvent hexane into the system.

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PUBLISHED
EN ISO 20596-2:2022
60.60 Standard published
Sep 21, 2022

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Adopted from ISO 20596-2:2021 IDENTICAL