STN EN ISO 20596-2
| Name: | STN EN ISO 20596-2 |
| Validity: | Valid |
| Number of pages: | 28 |
| Language: |
EN
|
| Paper: | 14,10€ |
| Electronic version |
a) Only read (without ability to print and copy)
12,69€ b) Without ability to print, with ability to copy (printscreen) 14,10€ c) With ability to print and copy (printscreen) 18,33€ |
| Slovak title | Kvalita vody. Stanovenie cyklických prchavých metylsiloxánov vo vode. Časť 2: Metóda extrakcie kvapalina-kvapalina s plynovou chromatografiou a hmotnostnou spektrometriou (GC-MS) (ISO 20596-2: 2021) |
| English title | 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) |
| Release Date: | 01. 01. 2023 |
| Date of withdrawal: | |
| ICS: | 13.060.50 |
| Sorting character/National clasification code | 75 7570 |
| Level of incorporation: | idt ISO 20596-2:2021, idt EN ISO 20596-2:2022 |
| Official Journal | 12/22 |
| Amendments | |
| Replaced by: | |
| Repleces: | |
| Note in Official Journal: | |
| Subject of the standard: | 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. |
| Preview: | Náhľad normy (PDF) |