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DIN EN ISO 20596-2:2023-07
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 version EN ISO 20596-2:2022
| Fecha edición: |
2023-07-01
En Vigor
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| Idiomas disponibles: | Inglés, Alemán |
| 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. |
| Keywords: | Chemical analysis and testing|Chemicals|Chemistry of water|Concentration|Cyclic compounds|Determination|Determination of content|Diffusion|Extraction|Gas chromatography|Gases|Ground water|Laboratory tests|Mass spectrometry|Methods of analysis|Methyl|Quality|Sewage|Siloxane|Surface water|Testing|Volatile|Water|Water analysis|Water practice|Water quality|Water samples|Water testing |
| ICS: | 13.060.50 - Determinación de sustancias químicas en el agua |
| CTN: | |
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Equivalencia Internacional |
Idéntica EN ISO 20596-2:2022 Idéntica ISO 20596-2:2021 |
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Reemplazo Normas |
Reemplaza a DIN EN ISO 20596-2:2022-07 |










