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oSIST prEN ISO 18724:2024

(Main)

Water quality - Determination of dissolved chromium(VI) in water - Photometric method (ISO/DIS 18724:2024)

Water quality - Determination of dissolved chromium(VI) in water - Photometric method (ISO/DIS 18724:2024)

This document specifies a method for the photometric determination of dissolved chromium(VI) using
manual, e.g., hand photometry, or automated static, e.g., discrete analyser system, or automated
dynamic techniques, e.g., flow injection analysis (FIA), continuous flow analysis (CFA), or ion
chromatography with post-column derivatization (IC-PCR). Typical areas of application for the static
techniques as well as FIA and CFA are samples with Cr(VI) concentrations 2 �g/l in raw water,
drinking water, surface water, aqueous eluates, cooling water and treated wastewater, provided that
the Matrix does not contain any reducing substances. When using cuvettes with large optical path
lengths, e.g. >100 mm, the range of application can be extended to concentrations 2 �g/l Cr(VI). When
using coupled techniques (e.g. IC-PCR), Cr(VI) concentrations 0,02 �g/l can be determined.
The NP is based on DIN 38405-52:2020-11.

Wasserbeschaffenheit - Bestimmung des gelösten Chrom(VI) in Wasser - Photometrisches Verfahren (ISO/DIS 18724:2024)

Qualité de l'eau - Détermination du chrome dissous(VI) dans l'eau - Méthode photométrique (ISO/DIS 18724:2024)

Kakovost vode - Določanje kroma (IV), raztopljenega v vodi - Fotometrijska metoda (ISO/DIS 18724:2024)

General Information

Status
Not Published
Public Enquiry End Date
01-Aug-2024
ICS
13.060.50 - Examination of water for chemical substances
Technical Committee
KAV - Water quality
Current Stage
4020 - Public enquire (PE) (Adopted Project)
Start Date
11-Jun-2024
Due Date
29-Oct-2024
Directive
2000/60/EC - Directive 2000/60/EC of the European Parliament and of the Council of 23 October 2000 establishing a framework for Community action in the field of water policy (substitutes Directive Reference 01/991 - Common Position on WFD)
Ref Project
prEN ISO 18724 - Water quality - Determination of dissolved chromium(VI) in water - Photometric method (ISO/DIS 18724:2024)

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SLOVENSKI STANDARD
oSIST prEN ISO 18724:2024
01-julij-2024
Kakovost vode - Določanje kroma (IV), raztopljenega v vodi - Fotometrijska
metoda (ISO/DIS 18724:2024)
Water quality - Determination of dissolved chromium(VI) in water - Photometric method
(ISO/DIS 18724:2024)
Wasserbeschaffenheit - Bestimmung des gelösten Chrom(VI) in Wasser -
Photometrisches Verfahren (ISO/DIS 18724:2024)
Qualité de l'eau - Détermination du chrome dissous(VI) dans l'eau - Méthode
photométrique (ISO/DIS 18724:2024)
Ta slovenski standard je istoveten z: prEN ISO 18724
ICS:
13.060.50 Preiskava vode na kemične Examination of water for
snovi chemical substances
oSIST prEN ISO 18724:2024 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN ISO 18724:2024

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oSIST prEN ISO 18724:2024
DRAFT
International
Standard
ISO/DIS 18724
ISO/TC 147/SC 2
Water quality — Determination of
Secretariat: DIN
dissolved chromium(VI) in water —
Voting begins on:
Photometric method
2024-06-04
Qualité de l'eau — Détermination du chrome dissous(VI) dans
Voting terminates on:
l'eau — Méthode photométrique
2024-08-27
ICS: 13.060.50
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS.
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Reference number
ISO/DIS 18724:2024(en)
© ISO 2024

---------------------- Page: 3 ----------------------
oSIST prEN ISO 18724:2024
DRAFT
ISO/DIS 18724:2024(en)
International
Standard
ISO/DIS 18724
ISO/TC 147/SC 2
Water quality — Determination of
Secretariat: DIN
dissolved chromium(VI) in water —
Voting begins on:
Photometric method
Qualité de l'eau — Détermination du chrome dissous(VI) dans
Voting terminates on:
l'eau — Méthode photométrique
ICS: 13.060.50
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
COPYRIGHT PROTECTED DOCUMENT
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2024
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
BE CONSIDERED IN THE LIGHT OF THEIR
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
or ISO’s member body in the country of the requester.
NATIONAL REGULATIONS.
ISO copyright office
RECIPIENTS OF THIS DRAFT ARE INVITED
CP 401 • Ch. de Blandonnet 8
TO SUBMIT, WITH THEIR COMMENTS,
CH-1214 Vernier, Geneva
NOTIFICATION OF ANY RELEVANT PATENT
Phone: +41 22 749 01 11
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland Reference number
ISO/DIS 18724:2024(en)
© ISO 2024

© ISO 2024 – All rights reserved
ii

---------------------- Page: 4 ----------------------
oSIST prEN ISO 18724:2024
ISO/DIS 18724:2024(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references .
...

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