SIST-TS CEN/TS 15105:2005

SLOVENSKI STANDARD
SIST-TS CEN/TS 15105:2005
01-oktober-2005
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Solid biofuels - Methods for determination of the water soluble content of chloride,
sodium and potassium
Feste Biobrennstoffe - Verfahren zur Bestimmung des wasserlöslichen Gehaltes an
Chlorid, Natrium und Kalium
Biocombustibles solides - Détermination de la teneur en chlorure, sodium et potassium
solubles dans l'eau
Ta slovenski standard je istoveten z: CEN/TS 15105:2005
ICS:
75.160.10 Trda goriva Solid fuels
SIST-TS CEN/TS 15105:2005 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST-TS CEN/TS 15105:2005

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SIST-TS CEN/TS 15105:2005
TECHNICAL SPECIFICATION
CEN/TS 15105
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
August 2005
ICS 75.160.10

English Version
Solid biofuels - Methods for determination of the water soluble
content of chloride, sodium and potassium
Biocombustibles solides - Détermination de la teneur en Feste Biobrennstoffe - Verfahren zur Bestimmung des
chlorure, sodium et potassium solubles dans l'eau wasserlöslichen Gehaltes an Chlorid, Natrium und Kalium
This Technical Specification (CEN/TS) was approved by CEN on 19 March 2005 for provisional application.
The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their
comments, particularly on the question whether the CEN/TS can be converted into a European Standard.
CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available
promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS)
until the final decision about the possible conversion of the CEN/TS into an EN is reached.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 15105:2005: E
worldwide for CEN national Members.

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SIST-TS CEN/TS 15105:2005
CEN/TS 15105:2005 (E)
Contents Page
Foreword .3
Introduction.4
1 Scope .5
2 Normative references .5
3 Terms and definitions.5
4 Principle.6
5 Reagents.6
6 Apparatus .6
7 Preparation of the test sample.6
8 Procedure .6
9 Calculation.8
10 Precision of the method .8
11 Test report .9

Bibliography.10

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SIST-TS CEN/TS 15105:2005
CEN/TS 15105:2005 (E)
Foreword
This Technical Specification (CEN/TS 15105:2005) has been prepared by Technical Committee CEN/TC 335
“Solid Biofuels”, the secretariat of which is held by SIS.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to announce this Technical Specification: Austria, Belgium, Cyprus, Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland
and United Kingdom.
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SIST-TS CEN/TS 15105:2005
CEN/TS 15105:2005 (E)

Introduction
The elements chlorine, sodium and potassium are to a larger or a smaller extent present in solid biofuels.
They can contribute significantly to utilisation problems such as corrosion, fouling and slagging in furnaces.
Also they affect the gaseous emissions from the thermal processes.
The chlorine content in solid biofuels is mainly present as water soluble inorganic salts as e.g. sodium and
potassium chlorides or other ion-exchangeable forms. Determination of the water soluble chloride content is
thus an alternative and simple method to achieve information of the level of chlorine in solid biofuels. The
content of water soluble chloride shall however not be mistaken for the total content of chlorine in the fuels.
In solid biofuels sodium and potassium can be present as both minerals and salts. The latter forms of the
elements are extractable with water and are readily volatile. By determination of the water soluble content of
sodium and potassium an estimate of the aggressive content of the elements in relation to potential slagging
and fouling problems can be achieved. For some biofuels, as e.g. straw, it is an experience that the water
soluble content of sodium and potassium correspond to the total content of the elements. The content of water
soluble sodium and potassium shall not be mistaken for the total content of the elements.
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SIST-TS CEN/TS 15105:2005
CEN/TS 15105:2005 (E)

1 Scope
This Technical Specification describes a method for the determination of the water soluble content of chloride,
sodium and potassium in solid biofuels by extraction with water in a closed container and their following
quantification by different analytical techniques.
The method is applicable for all solid biofuels with water soluble contents more than 50 mg/kg for chloride and
more than 10 mg/kg for sodium and potassium.
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.
CEN/TS 14588, Solid biofuels – Terminology, Definitions and Descriptions.
CEN/TS 14774-3, Solid biofuels – Methods for the determination of moisture content – Oven dry method -
Part 3: Moisture in general analysis sample.
prCEN/TS 14780, Solid biofuels – Methods for sample preparation.
prCEN/TS 15296, Solid biofuels – Calculation of analyses to different bases.
EN ISO 10304-1, Water quality – Determination of dissolved fluoride, chloride, nitrite, orthophosphate,
bromide, nitrate and sulfate ions, using liquid chromatography of ions – Part 1: Method for water with low
contamination (ISO 10304-1:1992).
EN ISO 11885, Water quality – Determination of 33 elements by inductively coupled plasma atomic emission
spectroscopy (ISO 11885:1996).
ISO 9964-1, Water quality – Determination of sodium and potassium – Part 1: Determination of sodium by
atomic absorption spectrometry.
ISO 9964-2, Water quality – Determination of sodium and potassium – Part 2: Determination of potassium by
atomic absorption spectrometry.
ISO 9964-3, Water quality – Determination of sodium and potassium – Part 3: Determination of sodium and
potassium by flame emission spectrometry.
3 Terms and definitions
For the purposes of this Technical Specif
...