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Normas DIN – AENOR
DIN EN ISO 23470:2011-01

DIN EN ISO 23470:2011-01

Soil quality - Determination of effective cation exchange capacity (CEC) and exchangeable cations using a hexamminecobalt trichloride solution (ISO 23470:2007); German version FprEN ISO 23470:2010 / Note: Date of issue 2011-01-17

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 cobalthexammine (ISO 23470:2007); Version allemande FprEN ISO 23470:2010 / Attention: Date de parution 2011-01-17

Bodenbeschaffenheit - Bestimmung der effektiven Kationenaustauschkapazität (KAK) und der austauschbaren Kationen mit Hexammin-cobalt-trichlorid-Lösung (ISO 23470:2007); Deutsche Fassung FprEN ISO 23470:2010 / Achtung: Erscheinungsdatum 2011-01-17

Fecha Anulación:
2011-09 /Withdrawn
Equivalencias internacionales:

FprEN ISO 23470 (2010-12)

ISO 23470 (2007-05)

Relación con otras normas DIN:

Reemplazada por: DIN EN ISO 23470:2011-09

Resumen:
This International Standard 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. The CEC is obtained by difference between the initial quantity of hexamminecobalt in solution and the quantity remaining in the extract after the exchange reaction. The measurement of hexamminecobalt concentration in the extract can be performed by direct spectrophotometric measurement, or by the determination of total ammonium nitrogen or total cobalt concentrations. The quantities of exchanged cations are determined on the same extract using spectrometric methods, such as inductively coupled plasma atomic emission spectrometry (ICP-AES).
Keywords:
Cation exchange, Cations, Chemical analysis and testing, Cobalt, Composition of the ground, Determination, Physical properties, Procedures, Soils, Spectrometry, Spectrophotometry, Water practice
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