EN ISO 2614:2023

SLOVENSKI STANDARD
01-marec-2024
Analiza zemeljskega plina - Biometan - Določanje terpenov z mikro plinsko
kromatografijo (ISO 2614:2023)
Analysis of natural gas - Biomethane - Determination of terpenes' content by micro gas
chromatography (ISO 2614:2023)
Analyse von Erdgas - Analyse von Biomethan - Bestimmung des Terpengehaltes durch
Mikrogaschromatographie (ISO 2614:2023)
Analyse du gaz naturel - Biométhane - Détermination de la teneur en terpènes par
micro-chromatographie en phase gazeuse (ISO 2614:2023)
Ta slovenski standard je istoveten z: EN ISO 2614:2023
ICS:
75.060 Zemeljski plin Natural gas
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 2614
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2023
EUROPÄISCHE NORM
ICS
English Version
Analysis of natural gas - Biomethane - Determination of
terpenes' content by micro gas chromatography (ISO
2614:2023)
Analyse du gaz naturel - Biométhane - Détermination Analyse von Erdgas - Analyse von Biomethan -
de la teneur en terpènes par micro-chromatographie Bestimmung des Terpengehaltes durch
en phase gazeuse (ISO 2614:2023) Mikrogaschromatographie (ISO 2614:2023)
This European Standard was approved by CEN on 2 September 2023.

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
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 2614:2023 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 2614:2023) 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 March 2024, and conflicting national standards shall
be withdrawn at the latest by March 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 given to CEN by the European
Commission and the European Free Trade Association.
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 2614:2023 has been approved by CEN as EN ISO 2614:2023 without any modification.

INTERNATIONAL ISO
STANDARD 2614
First edition
2023-08
Analysis of natural gas — Biomethane
— Determination of terpenes' content
by micro gas chromatography
Analyse du gaz naturel — Biométhane — Détermination de la teneur
en terpènes par micro-chromatographie en phase gazeuse
Reference number
ISO 2614:2023(E)
ISO 2614:2023(E)
© ISO 2023
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
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
ISO 2614:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principles of analysis . 2
4.1 General considerations. 2
4.2 Sample handling and injection . 2
4.2.1 Cleanness . 2
4.2.2 Sampling of biomethane into vessels . 2
4.2.3 Sample injection . 2
5 Materials . 3
5.1 Terpenes calibration standards . 3
5.2 Micro gas chromatograph (µGC-TCD) . 3
6 Analysis . . 3
6.1 Analytical conditions . 3
6.2 Collection of samples . 3
6.3 Quantification method . 3
7 Performance characteristics . 4
8 Test report . 4
Annex A (informative) Terpene characteristics and analytical conditions .5
Bibliography . 7
iii
ISO 2614:2023(E)
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, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely 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 www.iso.org/patents. ISO shall not be held responsible for identifying any or all
such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade 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, Natural gas and biomethane for use in transport and biomethane for
injection in the natural gas grid, in accordance with the Agreement on technical cooperation between
ISO and CEN (Vienna Agreement).
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.
iv
ISO 2614:2023(E)
Introduction
Terpenes can occur naturally in biogas and remain as trace components after treatment in the
biomethane produced. Terpenes are odoriferous compounds that have the potential to mask the smell
of the odorant added to the biomethane before injection into the natural gas grid. For safety reasons it
is necessary to monitor these impurities.
This document describes a method to perform the analysis of five terpenes in biomethane. The method
includes both on-line and offline measurement techniques based on chromatography and can be of
interest to fuel specifications for biomethane.
This document contributes to the standardization of the determination of terpenes in biomethane. The
document relates to good housekeeping in supply of biomethane into the natural gas grid.
v
INTERNATIONAL STANDARD ISO 2614:2023(E)
Analysis of natural gas — Biomethane — Determination of
terpenes' conten
...