Chem. J. Chinese Universities ›› 1984, Vol. 5 ›› Issue (1): 21.
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Chen Yude
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Abstract: Seven methods are proposed for estimation of extraction constants as follows.1. The relation:- (pH1/2 )1.0= AZ2/r + BX±+ C-λ(n-1)+(lgK0dm+a)/n+lgKaKd-1 Linear relations between- (pH1/2 )1.0 for two similar cations being extracted with a series of extractants;3. Linear relations between- (pH1/2)1.0 for two similar extractants extract a series of cations;4. Linear relations between- (pH1/2)1.0 for two diluents;5. Linear relations of-(pH1/2)1.0 vs. Z2/r for cations with similar electronegativity value;6. Normal variation of extraction for a series of cations in accordance with Z2/r and electronegativity values;7. Extractants of large ∑pKa match closely with cations of large Z2/r, and extractants of small electrouegativity match closely with cations of large electronegativity.
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Chen Yude . ESTIMATION OF EXTRACTION CONSTANTS[J]. Chem. J. Chinese Universities, 1984, 5(1): 21.
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