EN ISO 16960:2014

SLOVENSKI STANDARD
01-december-2014
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Natural gas - Determination of sulfur compounds - Determination of total sulfur by
oxidative microcoulometry method (ISO 16960:2014)
Erdgas - Bestimmung von Schwefelverbindungen - Bestimmung des Schwefelgehalts
mittels oxidativem mikrocoulometrischen Verfahren (ISO 16960:2014)
Gaz naturel - Détermination des composés soufrés - Détermination de la teneur totale en
soufre par microcoulométrie oxydante (ISO 16960:2014)
Ta slovenski standard je istoveten z: EN ISO 16960:2014
ICS:
75.060 Zemeljski plin Natural gas
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 16960
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2014
ICS 75.060
English Version
Natural gas - Determination of sulfur compounds - Determination
of total sulfur by oxidative microcoulometry method (ISO
16960:2014)
Gaz naturel - Détermination des composés soufrés - Erdgas - Bestimmung von Schwefelverbindungen -
Détermination de la teneur totale en soufre par Bestimmung des Schwefelgehalts mittels oxidativem
microcoulométrie oxydante (ISO 16960:2014) mikrocoulometrischen Verfahren (ISO 16960:2014)
This European Standard was approved by CEN on 24 August 2014.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 16960:2014 E
worldwide for CEN national Members.

Contents Page
Foreword .3

Foreword
This document (EN ISO 16960:2014) has been prepared by Technical Committee ISO/TC 193 "Natural gas".
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 April 2015, and conflicting national standards shall be withdrawn at the
latest by April 2015.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Endorsement notice
The text of ISO 16960:2014 has been approved by CEN as EN ISO 16960:2014 without any modification.
INTERNATIONAL ISO
STANDARD 16960
First edition
2014-10-01
Natural gas — Determination of sulfur
compounds — Determination of total
sulfur by oxidative microcoulometry
method
Gaz naturel — Détermination des composés soufrés — Détermination
de la teneur totale en soufre par microcoulométrie oxydante
Reference number
ISO 16960:2014(E)
©
ISO 2014
ISO 16960:2014(E)
© ISO 2014
All rights reserved. Unless otherwise specified, 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
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Published in Switzerland
ii © ISO 2014 – All rights reserved

ISO 16960:2014(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Test principle . 1
4 Reagents . 1
5 Apparatus . 2
5.1 Converter . 2
5.2 Titration cell . 2
5.3 Microcoulometer . 2
5.4 Flow controller. 2
5.5 Electromagnetic agitator . 2
5.6 Medical syringe . 2
5.7 Volumetric flask . 2
6 Test preparation . 2
6.1 Preparation of electrolyte . 2
6.2 Reference sample . 2
6.3 Apparatus installation . 3
6.4 Preparation of instrument . 3
6.5 Check and adjustment of the instrument . 3
6.6 Determination of recovery factor of sulfur . 3
7 Test procedure . 4
7.1 Sampling . 4
7.2 Sample injection and measurement . 4
8 Calculation . 4
8.1 Volume conversion . 4
8.2 Calculation of total sulfur mass concentration in the gas sample . 5
9 Precision . 6
9.1 General . 6
9.2 Repeatability . 6
Bibliography . 7
ISO 16960:2014(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 documents 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).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers
to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 193, Natural gas, Subcommittee SC 1, Analysis
of natural gas.
iv © ISO 2014 – All rights reserved

ISO 16960:2014(E)
Introduction
Three methods for determination of sulfur compounds in natural gas already exist as International
Standards:
— ISO 6326-3, Natural gas — Determination of sulfur compounds — Part 3: Determination of hydrogen
sulfide, mercaptan sulfur and carbonyl sulfide sulfur by potentiometry;
—
...