ISO 19579:2006

INTERNATIONAL ISO
STANDARD 19579
First edition
2006-10-01

Solid mineral fuels — Determination of
sulfur by IR spectrometry
Combustibles minéraux solides — Détermination du soufre par
spectrométrie infrarouge




Reference number
ISO 19579:2006(E)
©
ISO 2006

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ISO 19579:2006(E)
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ISO 19579:2006(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Principle. 1
4 Apparatus . 1
5 Reagents. 2
6 Preparation of sample . 2
7 Procedure . 3
8 Calibration check. 3
9 Expression of results . 3
10 Precision. 3
11 Test report . 4

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ISO 19579:2006(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
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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 2.
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.
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.
ISO 19579 was prepared by Technical Committee ISO/TC 27, Solid mineral fuels, Subcommittee SC 5,
Methods of analysis.
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ISO 19579:2006(E)
Introduction
Sulfur is normally present in coal in three forms; inorganic sulfides such as pyrite (FeS ), inorganic sulfates
2
associated with the mineral matter and organic sulfur in the carbonaceous substance.
This International Standard describes a high-temperature combustion/infrared absorption method of analysis,
which is used to determine the total sulfur content of coal.
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INTERNATIONAL STANDARD ISO 19579:2006(E)

Solid mineral fuels — Determination of sulfur by IR
spectrometry
1 Scope
This International Standard specifies an alternative method of determining the total sulfur content of hard coal,
brown coal, and lignite by high-temperature combustion and infrared (IR) absorption using commercially
available instruments.
This method has been shown to be applicable to coal samples having an ash yield of less than 40 %.
2 Normative references
The following referenced documents are indispensable for the application 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 334, Solid mineral fuels — Determination of total sulfur — Eschka method
ISO 351, Solid mineral fuels — Determination of total sulfur — High temperature combustion method
ISO 687, Solid mineral fuels — Coke — Determination of moisture in the general analysis test sample
ISO 5068-2, Brown coals and lignites — Determination of moisture content — Part 2: Indirect gravimetric
method for moisture in the analysis sample
ISO 11722, Solid mineral fuels — Hard coal — Determination of moisture in the general analysis test sample
by drying in nitrogen
3 Principle
The coal sample is combusted at 1
...