Bio-based products - Determination of the oxygen content using an elemental analyser

This document specifies a direct method for the determination of the total oxygen content in bio-based products using an elemental analyser. The scope is limited to products containing elements carbon, hydrogen, oxygen, nitrogen, chloride, bromide and iodide without fluoride, representing at least 95 % of the composition of the product to be analysed.
NOTE 1   Bio-based materials can contain both organic and inorganic components. The oxygen content might originate both from the organic and/or the inorganic components. The inorganic components are not bio-based but will nevertheless contribute to the amount of oxygen determined by the following prescribed methods and therefore influence the results in terms of oxygen content. According to the current state of the art, it is not possible by isotopic measurements to establish a distinction between oxygen originating from biomass and oxygen originating from non-biomass.
NOTE 2   Although this document has been drafted for the purpose of the determinations dealing with bio-based content, it can be also used as a standalone standard for determination of oxygen in organic compounds.
NOTE 3   For the purposes of this document, the unit "% (m/m)" is used to represent the oxygen content of a material.
NOTE 4   The method specified in this document involves a direct measurement method for the determination of oxygen content. This method contains many similarities with the ASTM D5622 [1] standard for gasoline and methanol fuels. The method specified in this document is specifically developed and validated for bio-based products. In addition, this method provides more accurate and unadulterated measured values for oxygen in contrast to indirect measurement methods for the determination of oxygen (e.g. ASTM D 3176 [2]).

Biobasierte Produkte - Bestimmung des Sauerstoffgehaltes unter Verwendung eines Elementaranalysators

Dieses Dokument legt ein direktes Verfahren zur Bestimmung des Gesamtsauerstoffgehaltes in biobasierten Produkten unter Verwendung eines Elementaranalysators fest. Der Anwendungsbereich ist auf Produkte beschränkt, in denen die Elemente Kohlenstoff, Wasserstoff, Sauerstoff, Stickstoff, Chlorid, Bromid und Iodid mindestens 95 % der Zusammensetzung des zu analysierenden Produktes ausmachen und Fluorid nicht vorkommt.
ANMERKUNG 1   Biobasierte Werkstoffe können sowohl organische als auch anorganische Bestandteile enthalten. Der Sauerstoffgehalt stammt möglicherweise aus organischen und/oder anorganischen Bestandteilen. Die anorganischen Bestandteile sind nicht biobasiert, tragen aber trotzdem zur durch die folgenden beschriebenen Verfahren bestimmten Sauerstoffmenge bei und beeinflussen deshalb die Ergebnisse in Bezug auf den Sauerstoffgehalt. Nach dem derzeitigen Stand der Technik ist es nicht möglich, durch Isotopenmessungen eine Unterscheidung zwischen Sauerstoff aus Biomasse und Sauerstoff aus Nicht-Biomasse zu treffen.
ANMERKUNG 2   Obwohl dieses Dokument zum Zweck der Bestimmungen in Bezug auf den biobasierten Gehalt erarbeitet wurde, kann es ebenso als eigenständige Norm zur Bestimmung von Sauerstoff in organischen Verbindungen verwendet werden.
ANMERKUNG 3   Für die Anwendung dieses Dokuments wird die Einheit "% (m/m)" zur Darstellung des Sauerstoffgehalts eines Werkstoffs verwendet.
ANMERKUNG 4   Bei dem in diesem Dokument beschriebenen Verfahren handelt es sich um ein direktes Messverfahren zur Bestimmung des Sauerstoffgehalts. Dieses Verfahren weist viele Ähnlichkeiten mit der Norm ASTM D5622 [1] für Benzin  und Methanolkraftstoffe auf. Das in diesem Dokument beschriebene Verfahren wurde speziell für biobasierte Produkte entwickelt und validiert. Zusätzlich liefert dieses Verfahren genauere und unverfälschte Messwerte für Sauerstoff im Gegensatz zu indirekten Messverfahren zur Bestimmung von Sauerstoff (z. B. ASTM D 3176 [2]).

Produits biosourcés - Détermination de la teneur en oxygène à l'aide d'un analyseur élémentaire

Le présent document spécifie une méthode directe de détermination de la teneur totale en oxygène dans les produits biosourcés à l’aide d’un analyseur élémentaire. Le domaine d’application se limite aux produits contenant les éléments carbone, hydrogène, oxygène, azote, chlorure, bromure et iodure sans fluorure, représentant au moins 95 % de la composition du produit à analyser.
NOTE 1   Les matériaux biosourcés peuvent contenir des composés organiques et inorganiques. La teneur en oxygène peut provenir des composés organiques et/ou inorganiques. Les composés inorganiques ne sont pas biosourcés mais contribueront néanmoins à la quantité d’oxygène déterminée par les méthodes prescrites suivantes et influenceront donc les résultats en termes de teneur en oxygène. Dans l'état actuel des connaissances, il est impossible de différencier, à l'aide de mesures isotopiques, l'oxygène issu de la biomasse de l'oxygène non issu de la biomasse.
NOTE 2   Bien que ce document ait été rédigé pour les déterminations ayant trait à la teneur biosourcée, il peut également être utilisé comme norme autonome pour déterminer la teneur en oxygène dans les composés organiques.
NOTE 3   Pour les besoins du présent document, l'unité « % (m/m) » est utilisée pour représenter la teneur en oxygène d’un matériau.
NOTE 4   La méthode spécifiée dans le présent document implique une méthode de mesure directe pour la détermination de la teneur en oxygène. Cette méthode présente de nombreuses similitudes avec la norme ASTM D5622 [1] sur l'essence et les combustibles au méthanol. La méthode spécifiée dans le présent document est spécialement élaborée et validée pour les produits biosourcés. En outre, cette méthode fournit des mesures pour l'oxygène plus précises et authentiques qu'avec les méthodes de mesure indirecte pour la détermination de la teneur en oxygène (par exemple, ASTM D3176 [2]).

Bioizdelki - Določevanje kisika z uporabo elementarnega analizatorja

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Publication Date
28-Jan-2020
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29-Jan-2020
Completion Date
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SLOVENSKI STANDARD
SIST EN 17351:2020
01-april-2020
Bioizdelki - Določevanje kisika z uporabo elementarnega analizatorja

Bio-based products - Determination of the oxygen content using an elemental analyser

Biobasierte Produkte - Sauerstoffgehalt - Bestimmung des Sauerstoffgehaltes unter

Verwendung eines Elementaranalysators

Produits biosourcés - Teneur en oxygène - Détermination de la teneur en oxygène à

laide dun analyseur déléments
Ta slovenski standard je istoveten z: EN 17351:2020
ICS:
13.020.55 Biološki izdelki Biobased products
SIST EN 17351:2020 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 17351:2020
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SIST EN 17351:2020
EN 17351
EUROPEAN STANDARD
NORME EUROPÉENNE
January 2020
EUROPÄISCHE NORM
ICS 13.020.55
English Version
Bio-based products - Determination of the oxygen content
using an elemental analyser

Produits biosourcés - Détermination de la teneur en Biobasierte Produkte - Bestimmung des

oxygène à l'aide d'un analyseur élémentaire Sauerstoffgehaltes unter Verwendung eines

Elementaranalysators
This European Standard was approved by CEN on 9 October 2019.

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, Turkey 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

© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 17351:2020 E

worldwide for CEN national Members.
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SIST EN 17351:2020
EN 17351:2020 (E)
Contents Page

European foreword ............................................................................................................................................ 3

Introduction .......................................................................................................................................................... 4

1 Scope .......................................................................................................................................................... 5

2 Normative references .......................................................................................................................... 5

3 Terms and definitions ......................................................................................................................... 5

4 Principle ................................................................................................................................................... 6

5 General requirements for the determination of the oxygen content................................. 6

6 Reagents ................................................................................................................................................... 7

7 Apparatus ................................................................................................................................................ 7

8 Sampling ................................................................................................................................................... 8

9 Measurement procedure .................................................................................................................... 8

10 Calculation of the oxygen content ................................................................................................... 9

11 Test report ............................................................................................................................................. 10

Annex A (normative) Performance characteristics ............................................................................ 11

Bibliography ....................................................................................................................................................... 13

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SIST EN 17351:2020
EN 17351:2020 (E)
European foreword

This document (EN 17351:2020) has been prepared by Technical Committee CEN/TC 411 “Bio-based

products”, the secretariat of which is held by NEN.

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 July 2020, and conflicting national standards shall be

withdrawn at the latest by July 2020.

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 mandate given to CEN by the European Commission and the

European Free Trade Association.

According to the CEN-CENELEC Internal Regulations, the national standards organisations 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, Turkey and the United

Kingdom.
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SIST EN 17351:2020
EN 17351:2020 (E)
Introduction

Bio-based products from forestry and agriculture have a long history of application, such as paper, board

and various chemicals and materials. The last decades have seen the emergence of new bio-based

products in the market. Some of the reasons for the increased interest lie in the benefits of bio-based

products in relation to the depletion of fossil resources and climate change. Bio-based products may also

provide additional product functionalities. These developments have triggered a wave of innovation with

the development of knowledge and technologies allowing new transformation processes and product

development.

Acknowledging the need for common standards for bio-based products, the European Commission issued

Mandate M/492 , resulting in a series of standards developed by CEN/TC 411, with a focus on bio-based

products other than food, feed and biomass for energy applications.

The standards of CEN/TC 411 “Bio-based products” provide a common basis on the following aspects:

— common terminology;
— bio-based content determination;
— life Cycle Assessment (LCA);
— sustainability aspects;
— declaration tools.

It is important to understand what the term bio-based product covers and how it is being used. The term

‘bio-based’ means 'derived from biomass'. Bio-based products (bottles, insulation materials, wood and

wood products, paper, solvents, chemical intermediates, composite materials, etc.) are products which

are wholly or partly derived from biomass. It is essential to characterize the amount of biomass contained

in the product by, for instance, its bio-based content or bio-based carbon content.

The bio-based content of a product does not provide information on its environmental impact or

sustainability, which may be assessed through LCA and sustainability criteria. In addition, transparent

and unambiguous communication within bio-based value chains is facilitated by a harmonized

framework for certification and declaration.

This document has been developed with the aim to specify the method for the determination of oxygen

content in bio-based products using an elemental analyser. This document provides the reference test

methods for laboratories, producers, suppliers and purchasers of bio-based products. It may be also

useful for authorities and inspection organizations.

Part of the research leading to this document has been performed under the European Union Seventh

Framework Programme OpenBio (see https://www.biobasedeconomy.eu/).

) A mandate is a standardization task embedded in European trade laws. Mandate M/492 is addressed to the

European Standardization bodies, CEN, CENELEC and ETSI, for the development of horizontal European Standards

for bio-based products.
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SIST EN 17351:2020
EN 17351:2020 (E)
1 Scope

This document specifies a direct method for the determination of the total oxygen content in bio-based

products using an elemental analyser. The scope is limited to products containing elements carbon,

hydrogen, oxygen, nitrogen, chloride, bromide and iodide without fluoride, representing at least 95 % of

the composition of the product to be analysed.

NOTE 1 Bio-based materials can contain both organic and inorganic components. The oxygen content might

originate both from the organic and/or the inorganic components. The inorganic components are not bio-based but

will nevertheless contribute to the amount of oxygen determined by the following prescribed methods and

therefore influence the results in terms of oxygen content. According to the current state of the art, it is not possible

by isotopic measurements to establish a distinction between oxygen originating from biomass and oxygen

originating from non-biomass.

NOTE 2 Although this document has been drafted for the purpose of the determinations dealing with bio-based

content, it can be also used as a standalone standard for determination of oxygen in organic compounds.

NOTE 3 For the purposes of this document, the unit “% (m/m)” is used to represent the oxygen content of a

material.

NOTE 4 The method specified in this document involves a direct measurement method for the determination of

oxygen content. This method contains many similarities with the ASTM D5622 [1] standard for gasoline and

methanol fuels. The method specified in this document is specifically developed and validated for bio-based

products. In addition, this method provides more accurate and unadulterated measured values for oxygen in

contrast to indirect measurement methods for the determination of oxygen (e.g. ASTM D 3176 [2]).

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.

EN 16575, Bio-based products - Vocabulary
3 Terms and definitions

For the purposes of this document, the terms and definitions given in EN 16575 and the following terms

and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp/ui
3.1
laboratory sample
sub-quantity of a sample suitable for laboratory tests
3.2
sample

quantity of material, representative of a larger quantity for which the property is to be determined

3.3
sample preparation

action taken to obtain representative analysis samples or test portions from the original sample

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SIST EN 17351:2020
EN 17351:2020 (E)
4 Principle

One of the major components of bio-based products is oxygen. The amount of oxygen is determined using

an elemental analyser. The dried sample is pyrolyzed in an inert gas stream (e.g. Helium, Argon, Nitrogen)

in a reaction column at a suitable temperature. The gaseous pyrolysis products are exposed to nickel

activated carbon, carbon black or glassy carbon at typical temperatures as shown in Table 1. The oxygen

present in the pyrolysis gases is transformed to carbon monoxide. The formed water is removed using a

column filled with magnesium perchlorate. The carbon monoxide is then separated on a column and

measured using a thermal conductivity detector or a NDIR CO detector.
Table 1 — Reactant and pyrolysis temperatures
Reactant Pyrolysis temperatures
Nickel activated carbon 1 060 °C
Carbon black 1 100 °C
Glassy carbon 1 400 °C

NOTE There is a restriction to components containing fluorine. Fluorine is forbidden in oxygen analysis, it

attacks the glass according the following reaction: F+SiO → SiF +O . As a result of that reaction, the oxygen

2 2 2

concentration determined by the measurement will be higher than the actual value.

Some inorganic compounds containing oxygen will also contribute to the measured oxygen concentration

in the sample (e.g. carbonates). The
...

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