SIST EN ISO 2611-1:2024

Analysis of natural gas - Halogen content of biomethane - Part 1: HCl and HF content by ion chromatography (ISO 2611-1:2024)

This document specifies a method for the determination of the concentration of hydrochloric acid (HCl) and hydrofluoric acid (HF) in biomethane, after absorption on an alkali-impregnated quartz fibre filtre or in a sorbent trap, by ion chromatography (IC) with conductimetric detection.
The method is applicable to biomethane for concentration levels for HCl from 0,07 mg/m3 to 35 mg/m3 and for HF from 0,07 mg/m3 to 20 mg/m3.
Unless stated otherwise, all concentrations in this document are given under standard reference conditions (see ISO 13443). Other conditions can be applied.
This method is also applicable to biogas. This method is intended to support conformity assessment of biomethane and biogas according to specifications, such as the EN 16723 series.

Analyse von Erdgas - Biomethan Bestimmung von halogenierten Verbindungen - Teil 1: HCl und HF Anteil durch Ionenchromatographie (ISO 2611-1:2024)

Dieses Dokument legt ein Verfahren zur Bestimmung der Konzentration von Salzsäure (HCl) und Flusssäure (HF) in Biomethan nach Absorption auf einem alkali-imprägnierten Quarzfaserfilter oder in einer Sorptionsfalle durch Ionenchromatographie (IC) mit konduktometrischer Detektion fest.
Das Verfahren ist anwendbar auf Biomethan bei Konzentrationen für HCl von 0,07 mg/m3 bis 35 mg/m3 und für HF von 0,07 mg/m3 bis 20 mg/m3.
Sofern nicht anders angegeben, werden alle Konzentrationen in diesem Dokument unter Standardbezugsbedingungen angegeben (siehe ISO 13443). Andere Bedingungen können angewendet werden.
Dieses Verfahren ist auch auf Biogas anwendbar. Dieses Verfahren ist zur Unterstützung der Konformitätsbewertung von Biomethan und Biogas in Übereinstimmung mit Festlegungen (Spezifikationen), wie z. B. der EN 16723 Reihe, bestimmt.

Analyse du gaz naturel - Teneur en halogènes du biométhane - Partie 1: Détermination de la teneur en HCl et HF par chromatographie ionique (ISO 2611-1:2024)

Le présent document spécifie une méthode pour la détermination de la concentration d’acide chlorhydrique (HCl) et d’acide fluorhydrique (HF) dans le biométhane, après absorption sur un filtre en fibre de quartz imprégné d’alcali ou dans un piège adsorbant, par chromatographie ionique (CI) avec détection conductimétrique.
Cette méthode est applicable au biométhane pour des niveaux de concentration allant de 0,07 mg/m3 à 35 mg/m3 pour HCl et de 0,07 mg/m3 à 20 mg/m3 pour HF.
Sauf indication contraire, toutes les concentrations figurant dans le présent document sont données dans des conditions de référence normalisées (voir l’ISO 13443). D’autres conditions peuvent être appliquées.
Cette méthode s’applique également au biogaz. Elle est destinée à aider à l’évaluation de la conformité du biométhane et du biogaz conformément aux spécifications, par exemple celles de la série des EN 16723.

Analiza zemeljskega plina - Biometan - Določanje halogenov v biometanu - 1. del: Določanje HCl in HF z ionsko kromatografijo (ISO 2611-1:2024)

Ta dokument določa metodo za določanje koncentracije klorovodikove in fluorovodikove kisline v biometanu po absorpciji na filtru iz kremenčevih vlaken, impregniranem z alkalijo, ali v absorbentni pasti z ionsko kromatografijo (IC) s konduktimetrično detekcijo.
Metoda se uporablja za naslednje ravni biometana:
– za vodikov klorid (HCl): od 0,07 mg/m3 do 34,3 mg/m3;
– za vodikov fluorid (HF): od 0,07 mg/m3 do 17,5 mg/m3.

General Information

• Status: Published
• Public Enquiry End Date: 02-Aug-2023
• Publication Date: 13-Jun-2024
• ICS: 75.060 - Natural gas
• Technical Committee: DPL - Gas supply
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 31-May-2024
• Due Date: 05-Aug-2024
• Completion Date: 14-Jun-2024
• Mandate: M/475 - Mandate to CEN for standards for biomethane for use in transport and injection in natural gas piplines
• Ref Project: EN ISO 2611-1:2024 - Analysis of natural gas - Halogen content of biomethane - Part 1: HCl and HF content by ion chromatography (ISO 2611-1:2024)

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2024
Analiza zemeljskega plina - Biometan - Določanje halogenov v biometanu - 1. del:
Določanje HCl in HF z ionsko kromatografijo (ISO 2611-1:2024)
Analysis of natural gas - Halogen content of biomethane - Part 1: HCl and HF content by
ion chromatography (ISO 2611-1:2024)
Analyse von Erdgas - Biomethan Bestimmung von halogenierten Verbindungen - Teil 1:
HCl und HF Anteil durch Ionenchromatographie (ISO 2611-1:2024)
Analyse du gaz naturel - Teneur en halogènes du biométhane - Partie 1: Détermination
de la teneur en HCl et HF par chromatographie ionique (ISO 2611-1:2024)
Ta slovenski standard je istoveten z: EN ISO 2611-1:2024
ICS:
75.060 Zemeljski plin Natural gas
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 2611-1
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2024
EUROPÄISCHE NORM
ICS 75.060
English Version
Analysis of natural gas - Halogen content of biomethane -
Part 1: HCl and HF content by ion chromatography (ISO
2611-1:2024)
Analyse du gaz naturel - Teneur en halogènes du Analyse von Erdgas - Biomethan Bestimmung von
biométhane - Partie 1: Détermination de la teneur en halogenierten Verbindungen - Teil 1: HCl und HF Anteil
HCl et HF par chromatographie ionique (ISO 2611- durch Ionenchromatographie (ISO 2611-1:2024)
1:2024)
This European Standard was approved by CEN on 1 April 2024.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 2611-1:2024 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 2611-1:2024) has been prepared by Technical Committee ISO/TC 193 "Natural
gas" in collaboration with Technical Committee CEN/TC 408 “Natural gas and biomethane for use in
transport and biomethane for injection in the natural gas grid” the secretariat of which is held by
AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by October 2024, and conflicting national standards shall
be withdrawn at the latest by October 2024.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a standardization request addressed to CEN by the European
Commission. The Standing Committee of the EFTA States subsequently approves these requests for its
Member States.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 2611-1:2024 has been approved by CEN as EN ISO 2611-1:2024 without any
modification.
International
Standard
ISO 2611-1
First edition
Analysis of natural gas — Halogen
2024-04
content of biomethane —
Part 1:
HCl and HF content by ion
chromatography
Analyse du gaz naturel — Teneur en halogènes du biométhane —
Partie 1: Détermination de la teneur en HCl et HF par
chromatographie ionique
Reference number
ISO 2611-1:2024(en) © ISO 2024

ISO 2611-1:2024(en)
© ISO 2024
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
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Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
ISO 2611-1:2024(en)
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and abbreviated terms. 2
4.1 Symbols .2
4.2 Abbreviated terms .2
5 Principle . 3
6 Reagents and consumables . 3
6.1 General .3
6.2 Water .3
6.3 Aqueous solutions .3
6.4 Chloride and fluoride stock standard solutions .3
6.5 Chloride and fluoride standard solutions.3
6.6 Chloride and fluoride calibration solutions .4
6.7 Blank .4
6.8 Eluents .4
6.9 Quartz filters .4
6.10 Syringe filters .4
6.11 Sorbent tubes .4
7 Apparatus . 4
7.1 General .4
7.2 Ion chromatography system .4
7.3 Quality requirements for the separator column .5
8 Sampling and sample pre-treatment . 5
8.1 General .5
8.2 Sampling equipment .5
8.2.1 Filter .5
8.2.2 Cartridges .5
8.2.3 Pump .6
8.3 Sampling .6
8.3.1 Filter-based method .6
8.3.2 Cartridge-based method .6
8.3.3 Gas volume measurement .6
8.4 Sample pre-treatment .6
8.4.1 Filter-based method .6
8.4.2 Cartridges-based method .6
9 Procedure . 7
9.1 General .7
9.2 Calibration .7
9.3 Measurement .7
10 Calculation . 7
11 Expression of results . 8
12 Performance characteristics . 9
12.1 Calibration check .9
12.2 Performance data .9
13 Test report . 9
Annex A (informative) Characteristics of the method . 10

iii
ISO 2611-1:2024(en)
Annex B (informative) Dynamic generation of HCl and HF .12
Bibliography .13

iv
ISO 2611-1:2024(en)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee
has been established has the right to be represented on that committee. International organizations,
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with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
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Any trade name used in this document is information given for the convenience of users and does not
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Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 193, Natural gas, Subcommittee SC 1,
Analysis of natural gas, in collaboration with the European Committee for Standardization (CEN) Technical
Committee CEN/TC 408, Biomethane for use in transport and injection in natural gas pipelines, in accordance
with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
A list of all parts in the ISO 2611 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.htmL.

v
ISO 2611-1:2024(en)
Introduction
A method for measuring hydrogen chloride (HCl) and hydrogen fluoride (HF) in biomethane is described
based on the absorption of these components on an alkali-impregnated quartz fibre filtre. The anions chloride
and fluoride are then analysed by ion chromatography with conductimetric detection. The concentrations
are expressed in equivalent hydrochloric acid and hydrofluoric acid at appropriate reference conditions.

vi
International Standard ISO 2611-1:2024(en)
Analysis of natural gas — Halogen content of biomethane —
Part 1:
HCl and HF content by ion chromatography
1 Scope
This document specifies a method for the determination of the concentration of hydrochloric acid (HCl) and
hydrofluoric acid (HF) in biomethane, after absorption on an alkali-impregnated quartz fibre filtre or in a
sorbent trap, by ion chromatography (IC) with conductimetric detection.
3 3
The method is applicable to biomethane for concentration levels for HCl from 0,07 mg/m to 35 mg/m and
3 3
for HF from 0,07 mg/m to 20 mg/m .
Unless stated otherwise, all concentrations in this document are given under standard reference conditions
(see ISO 13443). Other conditions can be applied.
This method is also applicable to biogas. This method is intended to support conformity assessment of
biomethane and biogas according to specifications, such as the EN 16723 series.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements of this document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
ISO 3696, Water for analytical laboratory use — Specification and test methods
ISO 6974-1, Natural gas — Determination of composition and associated uncertainty by gas chromatography —
Part 1: General guidelines and calculation of composition
ISO 6974-2, Natural gas — Determination of composition and associated uncertainty by gas chromatography —
Part 2: Uncertainty calculations
ISO 6974-3, Natural gas — Determination of composition and associated uncertainty by gas chromatography
— Part 3: Precision and bias
ISO 6976, Natural gas — Calculation of calorific values, density, relative density and Wobbe indices from
composition
ISO 10304-1, Water quality — Determination of dissolved
...