ISO 20596-2:2021

недоступно на русском языке

Текущий статус : Опубликовано

	Формат	Язык
std 1 92	PDF + ePub
std 2 92	Бумажный

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Тезис

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.

Общая информация

Текущий статус
: Опубликовано

Дата публикации
: 2021-01

Этап
: Опубликование международного стандарта [60.60]
Версия
: 1
Технический комитет :
ISO/TC 147/SC 2

ICS :
13.060.50
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