ISO 19040-1:2018

недоступно на русском языке

Опубликовано (Версия 1, 2018)

Последний раз этот публикация был пересмотрен в 2024. Поэтому данная версия остается актуальной.

ISO 19040-1:2018

CHF 194

Пересчитать швейцарские франки (CHF) в ваша валюта

Тезис

This document specifies a method for the determination of the estrogenic potential of water and waste water by means of a reporter gene assay with genetically modified yeast strains Saccharomyces cerevisiae. This reporter gene assay is based on the activation of the human estrogen receptor alpha.

This method is applicable to:

— fresh water;

— waste water;

— aqueous extracts and leachates;

— eluates of sediments (fresh water);

— pore water;

— aqueous solutions of single substances or of chemical mixtures;

— drinking water.

The limit of quantification (LOQ) of this method for the direct analysis of water samples is between 8 ng/l and 15 ng/l 17β-estradiol equivalents (EEQ) based on the results of the international interlaboratory trial (see Annex F). The upper threshold of the dynamic range for this test is between 120 ng/l and 160 ng/l 17β-estradiol equivalents (EEQ). Samples showing estrogenic potencies above this threshold have to be diluted for a valid quantification. Extraction and pre-concentration of water samples can prove necessary, if their estrogenic potential is below the given LOQ.

Общая информация

Текущий статус
: Опубликовано

Дата публикации
: 2018-08

Этап
: Подтверждение действия международного стандарта [90.93]
Версия
: 1
Технический комитет :
ISO/TC 147/SC 5

ICS :
13.060.70
RSS обновления