Release of Al by hydroxy-interlayered vermiculite and hydroxy-interlayered smectite during determination of cation exchange capacity in fine earth and rock fragments fractions

1997 ◽  
Vol 48 (2) ◽  
pp. 249-262 ◽  
Author(s):  
G. CORTI ◽  
A. AGNELLI ◽  
F.C. UGOLINI
Keyword(s):  
Cation Exchange ◽  
Cation Exchange Capacity ◽  
Exchange Capacity ◽  
Fine Earth ◽  
Rock Fragments

Determination of the Cation Exchange Capacity of Clays by Surface Tension Measurements

Clay Minerals ◽  
1993 ◽  
Vol 28 (3) ◽  
pp. 475-481 ◽  
Author(s):  
G. Burrafato ◽  
F. Miano
Keyword(s):  
Surface Tension ◽  
Cation Exchange ◽  
Clay Minerals ◽  
Cation Exchange Capacity ◽  
Mixing Time ◽  
Aqueous Suspension ◽  
Exchange Capacity ◽  
Drilling Fluids ◽  
Accurate Analysis

AbstractThe cation exchange capacity (CEC) of clay minerals has been determined by titration of aqueous suspension of clays with hexadecylpyridinium chloride, monitored using surface tension measurements. In order to make the method suitable for an accurate analysis of the CEC of the clays in drilling fluids or in soils, some parameters affecting the CEC determination (e.g. the presence of carboxymethylcellulose, mixing time and measurement device) have been investigated.

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