NA 119

DIN Standards Committee Water Practice

Project

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); German and English version prEN ISO 20596-2:2022

Abstract

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.

Begin

2022-01-04

WI

00230415

Planned document number

DIN EN ISO 20596-2

Project number

11904744

Responsible national committee

NA 119-01-03-02 UA - Organic compounds 

Responsible european committee

CEN/TC 230/WG 1 - Physical and biochemical methods 

Responsible international committee

ISO/TC 147/SC 2 - Physical, chemical and biochemical methods 

draft standard

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); German and English version prEN ISO 20596-2:2022
2022-07
Order from Beuth Verlag

Contact

Dipl.-Geol.

Andreas Paetz

Am DIN-Platz, Burggrafenstr. 6
10787 Berlin

Tel.: +49 30 2601-2448
Fax: +49 30 2601-42448

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