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BS EN ISO 15681-2:2018

BS EN ISO 15681-2:2018

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Current

The latest, up-to-date edition.

Water quality. Determination of orthophosphate and total phosphorus contents by flow analysis (FIA and CFA) Method by continuous flow analysis (CFA)

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

11-12-2018

Publisher

British Standards Institution

This document specifies continuous flow analysis (CFA) methods for the determination of orthophosphate in the mass concentration range from 0,01 mg/l to 1,00 mg/l P, and total phosphorus in the mass concentration range from 0,10 mg/l to 10,0 mg/l P.

This document specifies continuous flow analysis (CFA) methods for the determination of orthophosphate in the mass concentration range from 0,01mg/l to 1,00mg/l P, and total phosphorus in the mass concentration range from 0,10mg/l to 10,0mg/l P. The method includes the digestion of organic phosphorus compounds and the hydrolysis of inorganic polyphosphate compounds, performed either manually, as described in ISO6878 and in References[4], [5] and [7], or with an integrated ultraviolet (UV) digestion and hydrolysis unit.

This document is applicable to various types of water, such as ground, drinking, surface, leachate and waste water. The range of application can be changed by varying the operating conditions.

This method is also applicable to the analysis of seawater, but with changes in sensitivity by adapting the carrier and calibration solutions to the salinity of the samples.

It is also applicable to analysis using 10mm to 50mm cuvettes depending on the desired range. For extreme sensitivity, 250mm and 500mm long way capillary flow cells (LCFCs) can be used. However, the method is not validated for these two uses. Changes in sensitivity and calibration solutions could be required.

Annex A provides examples of a CFA system. Annex B gives performance data from interlaboratory trials. Annex C gives information of determining orthophosphate-P and total-P by CFA and tin(II) chloride reduction.

Committee
EH/3/2
DocumentType
Standard
ISBN
9780580932816
Pages
26
PublisherName
British Standards Institution
Status
Current
Supersedes

Standards Relationship
EN ISO 15681-2:2004 Identical
ISO 15681-2:2018 Identical
EN ISO 15681-2:2018 Identical

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Hardcopy - English
PDF - English
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