Water quality. Determination of the methylene blue active substances (MBAS) index. Method using continuous flow analysis (CFA)

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

04-30-2012

Publisher

British Standards Institution

Foreword
Introduction
1 Scope
2 Normative references
3 Interferences
4 Principle
5 Reagents
6 Apparatus
7 Sampling and sample pretreatment
8 Procedure
9 Calculation of the results
10 Expression of results
11 Precision
12 Test report
Annex A (informative) - Example of a flow diagram for the
determination of MBAS index by continuous flow
analysis (CFA)
Annex B (informative) - Precision data
Bibliography

Describes 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).

This International Standard 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.

Committee	EH/3/2
DevelopmentNote	Supersedes 02/564997 DC, 06/30150184 DC & 06/30150246 DC. Renumbers and supersedes BS ISO 16265. 2012 version incorporates corrigendum to BS ISO 16265. (04/2012)
DocumentType	Standard
Pages	22
PublisherName	British Standards Institution
Status	Current
Supersedes	02/564997 DC : 0 06/30150184 DC : DRAFT MAY 2006 06/30150246 DC : DRAFT MAY 2006 BS ISO 16265 : 2009

Standards	Relationship
ISO 16265:2009	Identical
EN ISO 16265:2012	Identical

ISO 1042:1998	Laboratory glassware One-mark volumetric flasks
ISO 648:2008	Laboratory glassware — Single-volume pipettes
ISO 8466-2:2001	Water quality — Calibration and evaluation of analytical methods and estimation of performance characteristics — Part 2: Calibration strategy for non-linear second-order calibration functions
ISO 5725-2:1994	Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method
ISO 3696:1987	Water for analytical laboratory use — Specification and test methods
ISO 8466-1:1990	Water quality Calibration and evaluation of analytical methods and estimation of performance characteristics Part 1: Statistical evaluation of the linear calibration function

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BS EN ISO 16265:2012

Current

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Abstract

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