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SFS-EN ISO 16265:en
Water quality. Determination of the methylene blue active substances (MBAS) index. Method using continuous flow analysis (CFA) (ISO 16265:2009)
Soveltamisala
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ISO 16265:2009 specifies a procedure for the determination of the methylene blue active substances (MBAS) index, in the ranges 0,05 mg/l to 0,5 mg/l and 0,5 mg/l to 5,0 mg/l, in various water samples (e.g. ground water, drinking water, surface water, waste water and leachates). Anionic surfactants are the most important substances showing methylene blue activity. This method is therefore useful for estimating the anionic surfactant content [including anionic surfactants with carboxylate groups (e.g. soaps)] of water. Other types of substance may also show methylene blue activity and contribute to the result. On a case-by-case basis, the range of the analysis may be changed and the method used for other concentration ranges provided they cover exactly one decade of concentration units.
Tämän julkaisun valmistelusta Suomessa vastaa Suomen ympäristökeskus, puh. 040 724 8795.
ISO 16265:2009 specifies a procedure for the determination of the methylene blue active substances (MBAS) index, in the ranges 0,05 mg/l to 0,5 mg/l and 0,5 mg/l to 5,0 mg/l, in various water samples (e.g. ground water, drinking water, surface water, waste water and leachates). Anionic surfactants are the most important substances showing methylene blue activity. This method is therefore useful for estimating the anionic surfactant content [including anionic surfactants with carboxylate groups (e.g. soaps)] of water. Other types of substance may also show methylene blue activity and contribute to the result. On a case-by-case basis, the range of the analysis may be changed and the method used for other concentration ranges provided they cover exactly one decade of concentration units.
Tämän julkaisun valmistelusta Suomessa vastaa Suomen ympäristökeskus, puh. 040 724 8795.
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Tekninen komitea
Vahvistuspäivä
26.03.2012
Julkaisupäivä
13.04.2012
Painos
1
Sivumäärä
15
Julkaisun kieli
englanti