Solid mineral fuels — Determination of total carbon, hydrogen and nitrogen — Instrumental methods

Combustibles minéraux solides — Dosage du carbone, de l'hydrogène et de l'azote total — Méthodes instrumentales

Trdna mineralna goriva - Določevanje celotnega ogljika, vodika in dušika - Instrumentalne metode

General Information

Status
Withdrawn
Publication Date
12-Dec-2001
Withdrawal Date
12-Dec-2001
Current Stage
9599 - Withdrawal of International Standard
Start Date
29-Sep-2010
Completion Date
29-Sep-2010

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TECHNICAL ISO/TS
SPECIFICATION 12902
First edition
2001-12-15
Solid mineral fuels — Determination of total
carbon, hydrogen and nitrogen —
Instrumental methods
Combustibles minéraux solides — Dosage du carbone, de l'hydrogène et
de l'azote total — Méthodes instrumentales
Reference number
ISO/TS 12902:2001(E)
ISO 2001
---------------------- Page: 1 ----------------------
ISO/TS 12902:2001(E)
PDF disclaimer

This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not

be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this

file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat accepts no liability in this

area.
Adobe is a trademark of Adobe Systems Incorporated.

Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters

were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event

that a problem relating to it is found, please inform the Central Secretariat at the address given below.

© ISO 2001

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic

or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body

in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.ch
Web www.iso.ch
Printed in Switzerland
ii © ISO 2001 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/TS 12902:2001(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.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.

The main task of technical committees is to prepare International Standards. Draft International Standards adopted

by the technical committees are circulated to the member bodies for voting. Publication as an International

Standard requires approval by at least 75 % of the member bodies casting a vote.

In other circumstances, particularly when there is an urgent market requirement for such documents, a technical

committee may decide to publish other types of normative document:

— an ISO Publicly Available Specification (ISO/PAS) represents an agreement between technical experts in an

ISO working group and is accepted for publication if it is approved by more than 50 % of the members of the

parent committee casting a vote;

— an ISO Technical Specification (ISO/TS) represents an agreement between the members of a technical

committee and is accepted for publication if it is approved by 2/3 of the members of the committee casting a

vote.

An ISO/PAS or ISO/TS is reviewed after three years with a view to deciding whether it should be confirmed for a

further three years, revised to become an International Standard, or withdrawn. In the case of a confirmed ISO/PAS

or ISO/TS, it is reviewed again after six years at which time it has to be either transposed into an International

Standard or withdrawn.

Attention is drawn to the possibility that some of the elements of this Technical Specification may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights.

ISO/TS 12902 was prepared by Technical Committee ISO/TC 27, Solid mineral fuels, Subcommittee SC 5,

Methods of analysis.
© ISO 2001 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO/TS 12902:2001(E)
Introduction

Instrumental methods for the analysis of carbon, hydrogen and nitrogen are now in widespread and regular use,

often in preference to formerly developed chemical methods for which International Standards exist. These

International Standards and/or Certified Reference Materials usually provide the data for the calibration of such

instrumental methods. It was considered that the procedures adopted in these instrumental methods should be

standardized as far as possible and at this stage would be best presented as a Technical Specification while further

data comparing instrumental and chemical methods is gathered and assessed.
iv © ISO 2001 – All rights reserved
---------------------- Page: 4 ----------------------
TECHNICAL SPECIFICATION ISO/TS 12902:2001(E)
Solid mineral fuels — Determination of total carbon, hydrogen and
nitrogen — Instrumental methods
1 Scope

This Technical Specification specifies the procedures to be followed when determining the mass fractions of total

carbon (including that present as carbonates), total hydrogen (including that present as water) and nitrogen in hard

coal, brown coal and lignite, and coke by instrumental methods.
2 Normative references

The following normative documents contain provisions which, through reference in this text, constitute provisions of

this Technical Specification. For dated references, subsequent amendments to, or revisions of, any of these

publications do not apply. However, parties to agreements based on this Technical Specification are encouraged to

investigate the possibility of applying the most recent editions of the normative documents indicated below. For

undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC

maintain registers of currently valid International Standards.

ISO 331:1983, Coal — Determination of moisture in the analysis sample — Direct gravimetric method

ISO 687:1974, Coke — Determination of moisture in the analysis sample

ISO 1015:1992, Brown coals and lignites — Determination of moisture content — Direct volumetric method

ISO 1170:1977, Coal and coke — Calculation of analyses to different bases
ISO 1988:1975, Hard coal — Sampling
ISO 2309:1980, Coke — Sampling

ISO 5068:1983, Brown coals and lignites — Determination of moisture content — Indirect gravimetric method

ISO 5069-2:1983, Brown coals and lignites — Principles of sampling — Part 2: Sample preparation for

determination of moisture content and for general analysis

ISO 13909-1:2001, Hard coal and coke — Mechanical sampling — Part 1: General introduction

ISO 13909-2:2001, Hard coal and coke — Mechanical sampling — Part 2: Coal — Sampling from moving streams

ISO 13909-3:2001, Hard coal and coke — Mechanical sampling — Part 3: Coal — Sampling from stationary lots

ISO 13909-4:2001, Hard coal and coke — Mechanical sampling — Part 4: Coal — Preparation of test samples

ISO 13909-5:2001, Hard coal and coke — Mechanical sampling — Part 5: Coke — Sampling from moving streams

ISO 13909-6:2001, Hard coal and coke — Mechanical sampling — Part 6: Coke — Preparation of test samples

ISO 13909-7:2001, Hard coal and coke — Mechanical sampling — Part 7: Methods for determining the precision of

sampling, sample preparation and testing

ISO 13909-8:2001, Hard coal and coke — Mechanical sampling — Part 8: Methods of testing for bias

© ISO 2001 – All rights reserved 1
---------------------- Page: 5 ----------------------
ISO/TS 12902:2001(E)
3 Principle

A known mass of the sample is burnt in oxygen, or in an oxygen/carrier gas mixture, under conditions such that it is

converted into ash and gaseous products of combustion, which consist mainly of carbon dioxide, water vapour,

elemental nitrogen and/or oxides of nitrogen, oxides and oxyacids of sulfur and hydrogen halides. The products of

combustion are treated to ensure that any hydrogen associated with sulfur or halide products of combustion is

liberated as water vapour, oxides of nitrogen are reduced to elemental nitrogen, and those products of combustion

which would interfere with the subsequent gas-analysis procedures are removed. The carbon dioxide, water vapour

and nitrogen mass fractions of the gas stream are then determined quantitatively by appropriate instrumental gas-

analysis procedures.
4 Reagents

WARNING — Care should be exercised when handling reagents, many of which are toxic and corrosive.

During the analysis, unless otherwise stated, use only reagents of recognized analytical grade and only distilled

water, or water of equivalent purity.
4.1 Carrier gas
Helium or other suitable gas as specified by the instrument manufacturer.
4.2 Oxygen
As specified by the instrument manufacturer.
4.3 Additional reagents
Types and qualities as specified by the instrument manufacturer.
4.4 Calibration standards
Pure organic substances such as sulfanilamide and benzylisothiourea.
4.5 Certified reference materials (CRM)
Coal or coke, issued by an internationally recognized authority.
...

SLOVENSKI STANDARD
SIST ISO/TS 12902:2002
01-junij-2002
7UGQDPLQHUDOQDJRULYD'RORþHYDQMHFHORWQHJDRJOMLNDYRGLNDLQGXãLND
,QVWUXPHQWDOQHPHWRGH
Solid mineral fuels -- Determination of total carbon, hydrogen and nitrogen --
Instrumental methods

Combustibles minéraux solides -- Dosage du carbone, de l'hydrogène et de l'azote total -

- Méthodes instrumentales
Ta slovenski standard je istoveten z: ISO/TS 12902:2001
ICS:
75.160.10 Trda goriva Solid fuels
SIST ISO/TS 12902:2002 en

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

---------------------- Page: 1 ----------------------
SIST ISO/TS 12902:2002
---------------------- Page: 2 ----------------------
SIST ISO/TS 12902:2002
TECHNICAL ISO/TS
SPECIFICATION 12902
First edition
2001-12-15
Solid mineral fuels — Determination of total
carbon, hydrogen and nitrogen —
Instrumental methods
Combustibles minéraux solides — Dosage du carbone, de l'hydrogène et
de l'azote total — Méthodes instrumentales
Reference number
ISO/TS 12902:2001(E)
ISO 2001
---------------------- Page: 3 ----------------------
SIST ISO/TS 12902:2002
ISO/TS 12902:2001(E)
PDF disclaimer

This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not

be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this

file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat accepts no liability in this

area.
Adobe is a trademark of Adobe Systems Incorporated.

Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters

were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event

that a problem relating to it is found, please inform the Central Secretariat at the address given below.

© ISO 2001

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic

or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body

in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.ch
Web www.iso.ch
Printed in Switzerland
ii © ISO 2001 – All rights reserved
---------------------- Page: 4 ----------------------
SIST ISO/TS 12902:2002
ISO/TS 12902:2001(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.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.

The main task of technical committees is to prepare International Standards. Draft International Standards adopted

by the technical committees are circulated to the member bodies for voting. Publication as an International

Standard requires approval by at least 75 % of the member bodies casting a vote.

In other circumstances, particularly when there is an urgent market requirement for such documents, a technical

committee may decide to publish other types of normative document:

— an ISO Publicly Available Specification (ISO/PAS) represents an agreement between technical experts in an

ISO working group and is accepted for publication if it is approved by more than 50 % of the members of the

parent committee casting a vote;

— an ISO Technical Specification (ISO/TS) represents an agreement between the members of a technical

committee and is accepted for publication if it is approved by 2/3 of the members of the committee casting a

vote.

An ISO/PAS or ISO/TS is reviewed after three years with a view to deciding whether it should be confirmed for a

further three years, revised to become an International Standard, or withdrawn. In the case of a confirmed ISO/PAS

or ISO/TS, it is reviewed again after six years at which time it has to be either transposed into an International

Standard or withdrawn.

Attention is drawn to the possibility that some of the elements of this Technical Specification may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights.

ISO/TS 12902 was prepared by Technical Committee ISO/TC 27, Solid mineral fuels, Subcommittee SC 5,

Methods of analysis.
© ISO 2001 – All rights reserved iii
---------------------- Page: 5 ----------------------
SIST ISO/TS 12902:2002
ISO/TS 12902:2001(E)
Introduction

Instrumental methods for the analysis of carbon, hydrogen and nitrogen are now in widespread and regular use,

often in preference to formerly developed chemical methods for which International Standards exist. These

International Standards and/or Certified Reference Materials usually provide the data for the calibration of such

instrumental methods. It was considered that the procedures adopted in these instrumental methods should be

standardized as far as possible and at this stage would be best presented as a Technical Specification while further

data comparing instrumental and chemical methods is gathered and assessed.
iv © ISO 2001 – All rights reserved
---------------------- Page: 6 ----------------------
SIST ISO/TS 12902:2002
TECHNICAL SPECIFICATION ISO/TS 12902:2001(E)
Solid mineral fuels — Determination of total carbon, hydrogen and
nitrogen — Instrumental methods
1 Scope

This Technical Specification specifies the procedures to be followed when determining the mass fractions of total

carbon (including that present as carbonates), total hydrogen (including that present as water) and nitrogen in hard

coal, brown coal and lignite, and coke by instrumental methods.
2 Normative references

The following normative documents contain provisions which, through reference in this text, constitute provisions of

this Technical Specification. For dated references, subsequent amendments to, or revisions of, any of these

publications do not apply. However, parties to agreements based on this Technical Specification are encouraged to

investigate the possibility of applying the most recent editions of the normative documents indicated below. For

undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC

maintain registers of currently valid International Standards.

ISO 331:1983, Coal — Determination of moisture in the analysis sample — Direct gravimetric method

ISO 687:1974, Coke — Determination of moisture in the analysis sample

ISO 1015:1992, Brown coals and lignites — Determination of moisture content — Direct volumetric method

ISO 1170:1977, Coal and coke — Calculation of analyses to different bases
ISO 1988:1975, Hard coal — Sampling
ISO 2309:1980, Coke — Sampling

ISO 5068:1983, Brown coals and lignites — Determination of moisture content — Indirect gravimetric method

ISO 5069-2:1983, Brown coals and lignites — Principles of sampling — Part 2: Sample preparation for

determination of moisture content and for general analysis

ISO 13909-1:2001, Hard coal and coke — Mechanical sampling — Part 1: General introduction

ISO 13909-2:2001, Hard coal and coke — Mechanical sampling — Part 2: Coal — Sampling from moving streams

ISO 13909-3:2001, Hard coal and coke — Mechanical sampling — Part 3: Coal — Sampling from stationary lots

ISO 13909-4:2001, Hard coal and coke — Mechanical sampling — Part 4: Coal — Preparation of test samples

ISO 13909-5:2001, Hard coal and coke — Mechanical sampling — Part 5: Coke — Sampling from moving streams

ISO 13909-6:2001, Hard coal and coke — Mechanical sampling — Part 6: Coke — Preparation of test samples

ISO 13909-7:2001, Hard coal and coke — Mechanical sampling — Part 7: Methods for determining the precision of

sampling, sample preparation and testing

ISO 13909-8:2001, Hard coal and coke — Mechanical sampling — Part 8: Methods of testing for bias

© ISO 2001 – All rights reserved 1
---------------------- Page: 7 ----------------------
SIST ISO/TS 12902:2002
ISO/TS 12902:2001(E)
3 Principle

A known mass of the sample is burnt in oxygen, or in an oxygen/carrier gas mixture, under conditions such that it is

converted into ash and gaseous products of combustion, which consist mainly of carbon dioxide, water vapour,

elemental nitrogen and/or oxides of nitrogen, oxides and oxyacids of sulfur and hydrogen halides. The products of

combustion are treated to ensure that any hydrogen associated with sulfur or halide products of combustion is

liberated as water vapour, oxides of nitrogen are reduced to elemental nitrogen, and those products of combustion

which would interfere with the subsequent gas-analysis procedures are removed. The carbon dioxide, water vapour

and nitrogen mass fractions of the gas stream are then determined quantitatively by appropriate instrumental gas-

analysis procedures.
4 Reagents

WARNING — Care should be exercised when handling reagents, many of which are toxic and corrosive.

During the analysis, unless otherwise stated, use only reagents of recognized analytical grade and only distilled

water
...

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