Soil quality - Determination of effective cation exchange capacity and base saturation level using barium chloride solution (ISO 11260:2018)

This document specifies a method for the determination of the cation exchange capacity (CEC) at the
pH of the soil and for the determination of the content of exchangeable sodium, potassium, calcium and
magnesium in soil.
This document is applicable to all types of air-dried soil samples. ISO 11464 can be used for pretreatment.

Bodenbeschaffenheit - Bestimmung der effektiven Kationenaustauschkapazität und der Basensättigung unter Verwendung von Bariumchloridlösung (ISO 11260:2018)

Dieses Dokument legt ein Verfahren zur Bestimmung der Kationenaustauschkapazität (KAK) beim pH Wert des Bodens und zur Bestimmung des Gehalts an austauschbarem Natrium, Kalium, Calcium und Magnesium im Boden fest.
Dieses Dokument gilt für alle Arten von lufttrockenen Bodenproben. Die Probenvorbehandlung nach ISO 11464 wird empfohlen.

Qualité du sol - Détermination de la capacité d'échange cationique effective et du taux de saturation en bases échangeables à l'aide d'une solution de chlorure de baryum (ISO 11260:2018)

Le présent document spécifie une méthode pour la détermination de la capacité d'échange cationique (CEC) au pH du sol et de la teneur en sodium, potassium, calcium et magnésium échangeables dans le sol.
Le présent document est applicable à tous les types d'échantillons de sol séchés à l'air. L'ISO 11464 peut être utilisée pour un prétraitement.

Kakovost tal - Določevanje efektivne kationske izmenjalne kapacitete in stopnje nasičenosti z bazičnimi kationi z raztopino barijevega klorida (ISO 11260:2018)

Ta dokument določa metodo za določevanje kationske izmenjalne kapacitete (CEC) pri določenem pH tal in za ugotavljanje vsebnosti izmenljivega natrija, kalija, kalcija in
magnezija v tleh.
Ta dokument se uporablja za vse vrste vzorcev tal, sušenih na zraku. Standard ISO 11464 se lahko uporablja za predhodno obdelavo.

General Information

Status
Published
Public Enquiry End Date
24-May-2017
Publication Date
12-Jun-2018
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
05-Jun-2018
Due Date
10-Aug-2018
Completion Date
13-Jun-2018

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SLOVENSKI STANDARD
SIST EN ISO 11260:2018
01-julij-2018
1DGRPHãþD
SIST EN ISO 11260:2011
.DNRYRVWWDO'RORþHYDQMHHIHNWLYQHNDWLRQVNHL]PHQMDOQHNDSDFLWHWHLQVWRSQMH
QDVLþHQRVWL]ED]LþQLPLNDWLRQL]UD]WRSLQREDULMHYHJDNORULGD ,62

Soil quality - Determination of effective cation exchange capacity and base saturation

level using barium chloride solution (ISO 11260:2018)

Bodenbeschaffenheit - Bestimmung der effektiven Kationenaustauschkapazität und der

Basensättigung unter Verwendung von Bariumchloridlösung (ISO 11260:2018)

Qualité du sol - Détermination de la capacité d'échange cationique effective et du taux

de saturation en bases échangeables à l'aide d'une solution de chlorure de baryum (ISO

11260:2018)
Ta slovenski standard je istoveten z: EN ISO 11260:2018
ICS:
13.080.10 .HPLMVNH]QDþLOQRVWLWDO Chemical characteristics of
soils
SIST EN ISO 11260:2018 en,fr,de

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

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SIST EN ISO 11260:2018
---------------------- Page: 2 ----------------------
SIST EN ISO 11260:2018
EN ISO 11260
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2018
EUROPÄISCHE NORM
ICS 13.080.10 Supersedes EN ISO 11260:2011
English Version
Soil quality - Determination of effective cation exchange
capacity and base saturation level using barium chloride
solution (ISO 11260:2018)

Qualité du sol - Détermination de la capacité d'échange Bodenbeschaffenheit - Bestimmung der effektiven

cationique effective et du taux de saturation en bases Kationenaustauschkapazität und der Basensättigung

échangeables à l'aide d'une solution de chlorure de unter Verwendung von Bariumchloridlösung (ISO

baryum (ISO 11260:2018) 11260:2018)
This European Standard was approved by CEN on 19 March 2018.

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, 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

© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 11260:2018 E

worldwide for CEN national Members.
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SIST EN ISO 11260:2018
EN ISO 11260:2018 (E)
Contents Page

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

Endorsement notice ..................................................................................................................................................... 3

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SIST EN ISO 11260:2018
EN ISO 11260:2018 (E)
European foreword

This document (EN ISO 11260:2018) has been prepared by Technical Committee ISO/TC 109 " Oil and

gas burners" in collaboration with Technical Committee CEN/TC 444 “Test methods for environmental

characterization of solid matrices” 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 November 2018, and conflicting national standards

shall be withdrawn at the latest by November 2018.

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 supersedes EN ISO 11260:2011.

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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
Endorsement notice

The text of ISO 11260:2018 has been approved by CEN as EN ISO 11260:2018 without any modification.

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SIST EN ISO 11260:2018
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SIST EN ISO 11260:2018
INTERNATIONAL ISO
STANDARD 11260
Second edition
2018-05
Soil quality — Determination of
effective cation exchange capacity and
base saturation level using barium
chloride solution
Qualité du sol — Détermination de la capacité d'échange cationique
et du taux de saturation en bases échangeables à l'aide d'une solution
de chlorure de baryum
Reference number
ISO 11260:2018(E)
ISO 2018
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SIST EN ISO 11260:2018
ISO 11260:2018(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2018

All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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 written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved
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SIST EN ISO 11260:2018
ISO 11260:2018(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Principle ........................................................................................................................................................................................................................ 1

5 Interferences ............................................................................................................................................................................................................ 2

6 Procedures .................................................................................................................................................................................................................. 2

6.1 Sample pretreatment ......................................................................................................................................................................... 2

6.2 Leaching ........................................................................................................................................................................................................ 2

6.2.1 Reagents .................................................................................................................................................................................. 2

6.2.2 Leaching procedure ....................................................................................................................................................... 3

6.3 Determination of CEC ........................................................................................................................................................................ 3

6.3.1 Principle .................................................................................................................................................................................. 3

6.3.2 Reagents .................................................................................................................................................................................. 3

6.3.3 Calibration series ...................................................................... ....................................................................................... 3

6.3.4 Spectrometric procedure .......................................................................................................................................... 3

6.3.5 Calculation ............................................................................................................................................................................. 4

6.4 Determination of exchangeable sodium and potassium ..................................................................................... 5

6.4.1 Principle .................................................................................................................................................................................. 5

6.4.2 Reagents .................................................................................................................................................................................. 5

6.4.3 Calibration series ...................................................................... ....................................................................................... 5

6.4.4 Spectrometric procedure .......................................................................................................................................... 5

6.4.5 Calculations .......................................................................................................................................................................... 5

6.5 Determination of exchangeable calcium and magnesium ................................................................................. 6

6.5.1 Principle .................................................................................................................................................................................. 6

6.5.2 Reagents .................................................................................................................................................................................. 6

6.5.3 Calibration series ...................................................................... ....................................................................................... 7

6.5.4 Spectrometric procedure .......................................................................................................................................... 7

6.5.5 Calculation ............................................................................................................................................................................. 7

7 Performance characterization ............................................................................................................................................................... 7

7.1 Calibration check ................................................................................................................................................................................... 7

7.2 Repeatability and reproducibility........................................................................................................................................... 8

8 Test report ................................................................................................................................................................................................................... 8

Annex A (informative) Performance data ....................................................................................................................................................... 9

Bibliography .............................................................................................................................................................................................................................12

© ISO 2018 – All rights reserved iii
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SIST EN ISO 11260:2018
ISO 11260:2018(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 voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO’s adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following

URL: www .iso .org/iso/foreword .html.

This document was prepared by Technical Committee ISO/TC 190 Soil quality, Subcommittee SC 3,

Chemical and physical characterization.

This second edition cancels and replaces the first edition (ISO 11260:1994), which has been technically

revised. It also incorporates the Technical Corrigendum ISO 11260:1994/Cor.1:1996.

iv © ISO 2018 – All rights reserved
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SIST EN ISO 11260:2018
INTERNATIONAL STANDARD ISO 11260:2018(E)
Soil quality — Determination of effective cation exchange
capacity and base saturation level using barium chloride
solution

WARNING — Persons using this document should be familiar with normal laboratory practice.

This document does not purport to address all of the safety problems, if any, associated with its

use. It is the responsibility of the user to establish appropriate safety and health practices.

IMPORTANT — It is absolutely essential that tests conducted in accordance with this document

be carried out by suitably qualified staff.
1 Scope

This document specifies a method for the determination of the cation exchange capacity (CEC) at the

pH of the soil and for the determination of the content of exchangeable sodium, potassium, calcium and

magnesium in soil.

This document is applicable to all types of air-dried soil samples. ISO 11464 can be used for pre-

treatment.
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.

ISO 3696, Water for analytical laboratory use — Specification and test methods
ISO 11265, Soil quality — Determination of the specific electrical conductivity
3 Terms and definitions
No terms and definitions are listed in this document.

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

— ISO Online browsing platform: available at https: //www .iso .org/obp
— IEC Electropedia: available at http: //www .electropedia .org/
4 Principle

The determination of CEC as specified in this document is a modification of the method proposed by

Gillman (see Reference [6]). The CEC of soil samples is determined at the pH of the soil and at a low total

ionic strength.

The soil is first saturated with respect to barium by treating the soil three times with a 0,1 mol/l

barium chloride solution. Thereafter, the soil is equilibrated with a 0,01 mol/l barium chloride

solution. Subsequently a known excess of 0,02 mol/l magnesium sulfate is added. All the barium

present, in solution as well as adsorbed, is precipitated in the form of highly insoluble barium sulfate

and, consequently, the sites with exchangeable ions are readily occupied by magnesium. The excess

magnesium is determined by inductively coupled plasma atomic emission spectrometry ICP-AES.

Alternative methods with a comparable precision and detection limit may also be used.

© ISO 2018 – All rights reserved 1
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SIST EN ISO 11260:2018
ISO 11260:2018(E)

It is also possible to determine the concentrations of sodium, potassium, calcium and magnesium (and

other elements such as iron, manganese and aluminium) in the 0,1 mol/l barium chloride extract of

the soil.

If the barium chloride extract has a yellowish-brown colour, this indicates that some organic matter has

been dissolved. If this occurs, record it in the test report.

NOTE 1 Since organic matter contributes to the CEC, its presence will result in a measured CEC value which is

an underestimation of the actual CEC.

NOTE 2 The sum of exchangeable cations can give a result that is greater than the actual CEC due to the

dissolution of salts present in the soil. However, preliminary washing of the soil with water to remove these salts

can change the relative proportions of cations in the CEC.
5 Interferences

The method described suffers from interference from calcium which may be present as calcite or

gypsum in the sample. Also, the presence of any soluble salts gives values for the exchangeable cations

that are higher than the actual exchangeable amounts (see References [4] and [5]).

Measurement of the specific electrical conductivity of the soil samples in accordance with ISO 11265

will indicate if the soil samples are affected by salt.
6 Procedures
6.1 Sample pretreatment
Pretreat and air-dry the sample, e.g. in accordance with ISO 11464.
6.2 Leaching
6.2.1 Reagents

Use only reagents of recognized analytical grade and water in accordance with grade 2 of ISO 3696.

6.2.1.1 Ba
...

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