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.
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Sisällysluettelo
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Interferences
6 Procedures
6.1 Sample pretreatment
6.2 Leaching
6.3 Determination of CEC
6.4 Determination of exchangeable sodium and potassium
6.5 Determination of exchangeable calcium and magnesium
ISO 11265:1994 Soil quality -- Determination of the specific electrical conductivity
ISO 3696:1987 Water for analytical laboratory use -- Specification and test methods
ISO 11265:1994 Soil quality -- Determination of the specific electrical conductivity
ISO 3696:1987 Water for analytical laboratory use -- Specification and test methods