EN ISO 23470:2018
(Main)Soil quality - Determination of effective cation exchange capacity (CEC) and exchangeable cations using a hexamminecobalt trichloride solution (ISO 23470:2018)
Soil quality - Determination of effective cation exchange capacity (CEC) and exchangeable cations using a hexamminecobalt trichloride solution (ISO 23470:2018)
This document specifies a method for the determination of cation exchange capacity (CEC) and the content of exchangeable cations (Al, Ca, Fe, K, Mg Mn, Na) in soils using a hexamminecobalt(III)chloride solution as extractant. For soils containing calcium carbonate a calcite saturated hexamminecobalt(III)chloride solution is specified particularly for determination of exchangeable Ca. This document is applicable to all types of air-dry soil samples which have been prepared according to ISO 11464.
Bodenbeschaffenheit - Bestimmung der effektiven Kationenaustauschkapazität (KAK) und der austauschbaren Kationen mit Hexammincobalt(III)chlorid-Lösung (ISO 23470:2018)
Dieses Dokument legt ein Verfahren zur Bestimmung der Kationenaustauschkapazität (KAK) und des Gehaltes an austauschbaren Kationen (Al, Ca, Fe, K, Mg, Mn, Na) in Böden unter Verwendung einer Hexammincobalt(III)chlorid-Lösung als Extraktionsmittel fest. Bei Böden, die Calciumcarbonat enthalten, ist eine calcitgesättigte Hexammincobalt(III)chlorid-Lösung besonders für die Bestimmung des austauschbaren Ca angegeben. Dieses Dokument gilt für alle Arten von lufttrockenen Bodenproben, die nach ISO 11464 vorbereitet wurden.
Qualité du sol - Détermination de la capacité d'échange cationique (CEC) effective et des cations échangeables à l'aide d'une solution de trichlorure de cobaltihexammine (ISO 23470:2018)
Le présent document spécifie une méthode de détermination de la capacité d'échange cationique (CEC) et de la teneur en cations échangeables (Al, Ca, Fe, K, Mg, Mn, Na) dans le sol à l'aide d'une solution de trichlorure de cobaltihexammine utilisée comme réactif d'extraction. Pour les sols contenant du carbonate de calcium, une solution de trichlorure de cobaltihexammine saturée en calcite est spécifiée, en particulier pour la détermination du Ca échangeable. Le présent document est applicable à tous les types d'échantillons de sol séchés à l'air qui ont été préparés conformément à l'ISO 11464.
Kakovost tal - Določevanje efektivne kationske izmenjalne kapacitete in izmenljivih kationov z uporabo raztopine heksaminokobaltovega triklorida (ISO 23470:2018)
Ta dokument določa metodo za določevanje kationske izmenjalne kapacitete (CEC) in vsebnost izmenljivih kationov (Al, Ca, Fe, K, Mg Mn, Na) v tleh z uporabo raztopine heksaminokobaltovega (III) klorida kot ekstraktanta. Za tla, ki vsebujejo kalcijev karbonat, je kalcitna nasičena raztopina heksaminokobaltovega (III) klorida določena posebej za določevanje izmenljivega kalcija. Ta dokument se uporablja za vse vrste vzorcev tal, posušene na zraku, ki so bili pripravljeni v skladu s standardom ISO 11464.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2018
1DGRPHãþD
SIST EN ISO 23470:2011
.DNRYRVWWDO'RORþHYDQMHHIHNWLYQHNDWLRQVNHL]PHQMDOQHNDSDFLWHWHLQL]PHQOMLYLK
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Soil quality - Determination of effective cation exchange capacity (CEC) and
exchangeable cations using a hexamminecobalt trichloride solution (ISO 23470:2018)
Bodenbeschaffenheit - Bestimmung der effektiven Kationenaustauschkapazität (KAK)
und der austauschbaren Kationen mit Hexammincobalt(III)chlorid-Lösung (ISO
23470:2018)
Qualité du sol - Détermination de la capacité d'échange cationique (CEC) effective et
des cations échangeables à l'aide d'une solution de trichlorure de cobaltihexammine
(ISO 23470:2018)
Ta slovenski standard je istoveten z: EN ISO 23470:2018
ICS:
13.080.10 .HPLMVNH]QDþLOQRVWLWDO Chemical characteristics of
soils
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 23470
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2018
EUROPÄISCHE NORM
ICS 13.080.20 Supersedes EN ISO 23470:2011
English Version
Soil quality - Determination of effective cation exchange
capacity (CEC) and exchangeable cations using a
hexamminecobalt trichloride solution (ISO 23470:2018)
Qualité du sol - Détermination de la capacité d'échange Bodenbeschaffenheit - Bestimmung der effektiven
cationique (CEC) effective et des cations échangeables Kationenaustauschkapazität (KAK) und der
à l'aide d'une solution de trichlorure de austauschbaren Kationen mit Hexammincobalt-
cobaltihexammine (ISO 23470:2018) trichlorid-Lösung (ISO 23470:2018)
This European Standard was approved by CEN on 10 September 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 23470:2018 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 23470:2018) has been prepared by Technical Committee ISO/TC 190 "Soil
quality" 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 April 2019, and conflicting national standards shall be
withdrawn at the latest by April 2019.
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 23470:2011.
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 23470:2018 has been approved by CEN as EN ISO 23470:2018 without any modification.
INTERNATIONAL ISO
STANDARD 23470
Second edition
2018-09
Soil quality — Determination of
effective cation exchange capacity
(CEC) and exchangeable cations using
a hexamminecobalt(III)chloride
solution
Qualité du sol — Détermination de la capacité d'échange cationique
(CEC) effective et des cations échangeables à l'aide d'une solution de
trichlorure de cobaltihexammine
Reference number
ISO 23470:2018(E)
©
ISO 2018
ISO 23470:2018(E)
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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ISO 23470:2018(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Reagents . 2
6 Apparatus . 3
7 Procedure. 4
7.1 Test portion . 4
7.2 Exchange reaction . 4
7.3 Determination of CEC . 4
7.3.1 General. 4
7.3.2 Determination of ammonia nitrogen by distillation . 4
7.3.3 Spectrophotometric determination . 5
7.3.4 Spectrometric determination of cobalt . 7
7.4 Determination of cobalt and exchangeable cations . 7
7.4.1 General. 7
7.4.2 Standard solutions for exchangeable cations . 8
7.4.3 Standard solutions for cobalt . 8
7.4.4 Spectrometric determination of exchangeable cations . 9
7.4.5 Spectrometric determination of cobalt . 9
7.4.6 Calculation of exchangeable cations . 9
8 Test report .10
9 Validation .10
Annex A (informative) Comparison of different methods for the determination of effective CEC .11
Annex B (informative) Results of the interlaboratory comparison for extraction with
hexamminecobalt(III)chloride .15
Annex C (informative) Results of the interlaboratory comparison for extraction with calcite
saturated hexamminecobalt(III)chloride solution .17
Annex D (informative) Carbonate and sulfate field model .18
Annex E (informative) Effect of minimization of Ca errors by calcite saturation of
hexamminecobalt .20
Bibliography .22
ISO 23470:2018(E)
Foreword
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This document was prepared by Technical Committee ISO/TC 190, Soil quality,
...
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