Cation Exchange Capacity

CATION-EXCHANGE CAPACITY OF SOILS (By METHOD 9081)

Scope:

The soil sample is mixed with an excess of sodium acetate solution, resulting in an exchange of the added sodium cations for the matrix cations. Subsequently, the sample is washed with isopropyl alcohol. An ammonium acetate solution is then added, which replaces the adsorbed sodium with ammonium. The concentration of displaced sodium is then determined by atomic absorption, emission spectroscopy, or an equivalent means.

-Method 9081: Cation-Exchange Capacity of Soils (Sodium Acetate), part of Test Methods for Evaluating Solid Waste, Physical/Chemical Methods

Method Data

Method 9081
Hold Time
Preservation
Sample Volume8 oz
Collection Method
InstrumentationICPMS
Method Refernce9081

Analyte List

AnalyteFormulaCAS Number
Sodium milliequivalentsNa meq

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