NF EN ISO 23470

NF EN ISO 23470

October 2018
Standard Current

Soil quality - Determination of effective cation exchange capacity (CEC) and exchangeable cations using a hexamminecobalt trichloride solution

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.

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Main informations

Collections

National standards and national normative documents

Publication date

October 2018

Number of pages

32 p.

Reference

NF EN ISO 23470

ICS Codes

13.080.10   Chemical characteristics of soils
13.080.20   Physical properties of soils

Classification index

X31-440

Print number

1

International kinship

ISO 23470:2018

European kinship

EN ISO 23470:2018
Sumary
Soil quality - Determination of effective cation exchange capacity (CEC) and exchangeable cations using a hexamminecobalt trichloride solution

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.

Replaced standards (1)
NF EN ISO 23470
September 2011
Standard Cancelled
Soil quality - Determination of effective cation exchange capacity (CEC) and exchangeable cations using a hexamminecobalt trichloride solution

ISO 23470:2007 specifies a method for the determination of the cation exchange capacity (CEC) and the content of exchangeable cations (Al3+, Ca2+, Fe2+, K+, Mg2+, Mn2+, Na+) in soils using a hexamminecobalt trichloride solution as extractant. ISO 23470:2007 is applicable to all types of air-dried soil samples which have been prepared in accordance with ISO 11464.

Table of contents
  • Avant-propos
  • 1 Domaine d'application
  • 2 Références normatives
  • 3 Termes et définitions
  • 4 Principe
  • 5 Réactifs
  • 6 Appareillage
  • 7 Mode opératoire
  • 8 Rapport d'essai
  • 9 Validation
  • Annexe A (informative) Comparaison de différentes méthodes permettant de déterminer la CEC effective
  • Annexe B (informative) Résultats de la comparaison interlaboratoires relative à l'extraction au trichlorure de cobaltihexammine
  • Annexe C (informative) Résultats de la comparaison interlaboratoires relative à l'extraction avec une solution de trichlorure de cobaltihexammine saturée en calcite
  • Annexe D (informative) Modèle de domaine des carbonates et des sulfates
  • Annexe E (informative) Effet de la réduction des erreurs de Ca par saturation en calcite de la colbaltihexammine
  • Bibliographie
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