oSIST prEN ISO 18127:2024

Water quality - Determination of adsorbable organically bound fluorine, chlorine, bromine and iodine (AOF, AOCl, AOBr, AOI) - Method using combustion and subsequent ion chromatographic measurement (ISO/DIS 18127:2024)

This dcoument specifies a method for the determination of fluoro-, chloro-, bromo- and iodo-organic compounds (AOF, AOCl, AOBr, AOI). Due to the high solubility of AgF in water the scope of ISO 9562 is restricted to Cl-, Br- and I-organic compounds (AOX, calculated as chlorine) because of the applied argentometric detection. The PN follows the proven AOX ISO 9562 method: adsorption of organohalogen
compounds on activated carbon, oxidative combustion at 1000 °C with following alterations: constant water feed during combustion (hydropyrolysis), absorption of combustion gases in water, halide specific detection using ionchromatography. The method is applicable for the determination of
2 µg/l AOF, expressed as F
10 µg/l AOCl, expressed as Cl
1 µg/l AOBr, expressed as Br
1 µg/l AOI, expressed as I.
Samples for determination of AOF are treated differently than samples for the determination of AOCl,
AOBr and AOI.
- Samples for determination of AOF are not acidified. The adsorption takes place under unchanged pH
conditions. Washing is also performed with a neutral washing solution.
- Samples for the determination of AOCl, AOBr and AOI are adjusted to a pH value 2 with nitric acid,
the adsorption and washing take place in a nitric acid environment.

Wasserbeschaffenheit - Bestimmung von adsorbierbarem organisch gebundenem Fluor, Chlor, Brom und Iod (AOF, AOCl, AOBr, AOI) - Verfahrens mittels Verbrennung und nachfolgender Ionenchromatographischer Messung (ISO/DIS 18127:2024)

Qualité de l'eau - Dosage du fluor, du chlore, du brome et de l'iode adsorbables liés organiquement (AOF, AOCl, AOBr, AOI) - Méthode en utilisant la combustion et la mesure ultérieure par chromatographie ionique (ISO/DIS 18127:2024)

Kakovost vode - Določanje organsko vezanega fluora, klora, broma in joda, sposobnega adsorpcije (AOF, AOCl, AOBr, AOI) - Metoda z zgorevanjem in ionsko kromatografijo (ISO/DIS 18127:2024)

General Information

• Status: Not Published
• Public Enquiry End Date: 14-Sep-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: 19-Jul-2024
• Due Date: 06-Dec-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 18127 - Water quality - Determination of adsorbable organically bound fluorine, chlorine, bromine and iodine (AOF, AOCl, AOBr, AOI) - Method using combustion and subsequent ion chromatographic measurement (ISO/DIS 18127:2024)

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2024
Kakovost vode - Določanje organsko vezanega fluora, klora, broma in joda,
sposobnega adsorpcije (AOF, AOCl, AOBr, AOI) - Metoda z zgorevanjem in ionsko
kromatografijo (ISO/DIS 18127:2024)
Water quality - Determination of adsorbable organically bound fluorine, chlorine, bromine
and iodine (AOF, AOCl, AOBr, AOI) - Method using combustion and subsequent ion
chromatographic measurement (ISO/DIS 18127:2024)
Wasserbeschaffenheit - Bestimmung von adsorbierbarem organisch gebundenem Fluor,
Chlor, Brom und Iod (AOF, AOCl, AOBr, AOI) - Verfahrens mittels Verbrennung und
nachfolgender Ionenchromatographischer Messung (ISO/DIS 18127:2024)
Qualité de l'eau - Dosage du fluor, du chlore, du brome et de l'iode adsorbables liés
organiquement (AOF, AOCl, AOBr, AOI) - Méthode en utilisant la combustion et la
mesure ultérieure par chromatographie ionique (ISO/DIS 18127:2024)
Ta slovenski standard je istoveten z: prEN ISO 18127
ICS:
13.060.50 Preiskava vode na kemične Examination of water for
snovi chemical substances
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
International
Standard
ISO/DIS 18127
ISO/TC 147/SC 2
Water quality — Determination
Secretariat: DIN
of adsorbable organically bound
Voting begins on:
fluorine, chlorine, bromine and
2024-07-05
iodine (AOF, AOCl, AOBr, AOI) —
Voting terminates on:
Method using combustion and
2024-09-27
subsequent ion chromatographic
measurement
Qualité de l'eau — Dosage du fluor, du chlore, du brome et de
l'iode adsorbables liés organiquement (AOF, AOCl, AOBr, AOI) —
Méthode en utilisant la combustion et la mesure ultérieure par
chromatographie ionique
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.
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BEING ACCEPTABLE FOR INDUSTRIAL,
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STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
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POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS.
RECIPIENTS OF THIS DRAFT ARE INVITED
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NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Reference number
ISO/DIS 18127:2024(en)
DRAFT
ISO/DIS 18127:2024(en)
International
Standard
ISO/DIS 18127
ISO/TC 147/SC 2
Water quality — Determination
Secretariat: DIN
of adsorbable organically bound
Voting begins on:
fluorine, chlorine, bromine and
iodine (AOF, AOCl, AOBr, AOI) —
Voting terminates on:
Method using combustion and
subsequent ion chromatographic
measurement
Qualité de l'eau — Dosage du fluor, du chlore, du brome et de
l'iode adsorbables liés organiquement (AOF, AOCl, AOBr, AOI) —
Méthode en utilisant la combustion et la mesure ultérieure par
chromatographie ionique
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,
© 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: [phone]
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Email: [e-mail]
Website: www.iso.org
Published in Switzerland Reference number
ISO/DIS 18127:2024(en)
ii
ISO/DIS 18127:2024(en)
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 2
3 Terms and definitions . 2
4 Interferences . 3
4.1 Interference during adsorption .3
4.2 Interferences on combustion .3
4.3 Interferences on ion chromatography .3
5 Principle . 3
6 Reagents . 4
7 Apparatus and materials . 8
8 Sampling and sample preparation .11
8.1 General .11
8.2 Sampling for the AOF determination .11
8.3 Sampling for the AOCl-, AOBr- and AOI determination .11
8.4 Further procedure of sample preparation .11
8.4.1 AOF determination .11
8.4.2 AOCl, AOBr and AOI determination. 12
9 Procedure .12
9.1 Preliminary test . 12
9.2 Homogenization. 12
9.3 Sample preparation . 13
9.3.1 General . 13
9.3.2 Test sample for the AOF determination . 13
9.3.3 Test samples for the AOCl, AOBr and AOI determination . 13
9.4 Adsorption on activated carbon . 13
9.4.1 Washing of the activated carbon for the AOF determination . 13
9.4.2 Washing of the activated carbon for the AOCl, AOBr, AOI determination . 13
9.5 Additional procedure . 13
9.6 Blank determination .14
9.6.1 AOF blank determination .14
9.6.2 AOCl, AOBr and AOI blank determination .14
9.7 Consideration of matrix contributions to AOF, AOCl, AOBr, AOI .14
9.8 Operation of the ion chromatography system .14
9.8.1 General .14
9.8.2 Calibration . . .14
9.8.3 Measurement . 15
9.8.4 Checking the ion chromatography . 15
9.9 Combustion and absorption . 15
9.10 Measurement of the absorption solution . 15
10 Validation of the overall procedure . .15
10.1 Initial check . 15
10.2 Daily check .16
10.3 Test to determine the completeness of the adsorption .16
11 Selection of usable analytical results .16
12 Calculation .16
13 Expression of the results . 17
14 Test report .18

iii
ISO/DIS 18127:2024(en)
Annex A (normative) Determination of adsorbable
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