Reference number
ISO 20596-2:2021
ISO 20596-2:2021
© ISO 2024
International Standard
ISO 20596-2:2021
Water quality — Determination of cyclic volatile methylsiloxanes in water — Part 2: Method using liquid-liquid extraction with gas chromatography-mass spectrometry (GC-MS)
Edition 1
2021-01
2021-01
Resumen
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.
Informaciones generales
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Estado: PublicadoFecha de publicación: 2021-01Etapa: Norma Internacional publicada [60.60]
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Edición: 1Número de páginas: 16
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Comité Técnico :ISO/TC 147/SC 2ICS :13.060.50
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