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Some problems in interpreting cation-exchange-capacity data



Some problems in interpreting cation-exchange-capacity data



Soil Sci 97(3): 202-208



Apparent cation-exchange capacity of kaolinitic samples is markedly affected by the amount and nature of the washing liquid used to remove excess saturating salt. Water is more effective than 80% ethanol for removing barium-acetate. Removal of sodium-acetate with 80% ethanol proceeds more rapidly than the removal of barium-acetate. Errors of salt retention and hydrolysis induced by the washing step preclude obtaining reliable data. Net charge, measured without a washing step, is more reliable than a measurement of apparent cation-exchange capacity.

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Accession: 014675804

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DOI: 10.1097/00010694-196403000-00009


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