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A method for determining the cation-exchange capacity of organic materials

โœ Scribed by A. Lax; A. Roig; F. Costa

Publisher
Springer
Year
1986
Tongue
English
Weight
390 KB
Volume
94
Category
Article
ISSN
0032-079X

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โœฆ Synopsis

A method for determining the cation-exchange capacity (CEC) of organic matter was developed by modifying the BaC12 triethanolamine, pH 8.1, method used in calcareous soils. Problems arising from the presence of sulphates and losses of water soluble organic matter were solved. The proposed method for organic matter is comparable to that of soil in terms of sensitivity, reproducibility and in the time necessary for each analysis. In the second part of the work the CEC's of diverse organic samples were determined and found to be reproducible with an average coefficient of variation of 3.56%.

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โœ Maged A. Osman; Ulrich W. Suter ๐Ÿ“‚ Article ๐Ÿ“… 2000 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 45 KB

High cation-exchange capacity (CEC) muscovite mica with a homoionic surface was prepared by replacing the Li + surface ions of partially delaminated Li-mica with K + . The CEC of this K-mica was determined by exchanging its surface cations with Cs + , NH + 4 , methylene blue (MB + ), and copper trie