DIN EN ISO 23470:2018 Edition

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Soil quality – Determination of effective cation exchange capacity (CEC) and exchangeable cations using a hexamminecobalttrichloride solution

Published By	Publication Date	Number of Pages
DIN	2018-12	31

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Categories: 13.080.20 - Physical properties of soils, DIN

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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(III)chloride 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).

Published Code

DIN

Published By

Deutsches Institut für Normung

Publication Date

2018-12

Pages Count

Language

Germany

Descriptors

Cation exchange, Cations, Chemical analysis and testing, Cobalt, Composition of the ground, Determination, Physical properties, Procedures, Soils, Spectrometry, Spectrophotometry, Water practice, Bottom, Methods, Ground, Processes, Floors

File Size

1.6 MB

ICS Codes

13.080.20 - Physical properties of soils


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DIN EN ISO 23470:2018 Edition

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