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Polarographic determination of extraction constants
H A Dingjan1, W P Van Bennekom, A Bult
1Department of Chemical Pharmacy, Subfaculty of Pharmacy, State University of Utrecht, the Netherlands.
Pharmaceutisch Weekblad. Scientific Edition
|August 21, 1987
Abstract:
The extraction constant of three organic compounds containing nitrogen as a picrate ion pair in a water-chloroform system were determined by following polarographically the picrate concentration in the aqueous phase as a function of the added amount of reagent. The extraction constants were also determined spectrophotometrically (via batch extraction). The obtained results are in good agreement. The proposed method is applicable for extraction constants with values between 10(3) and 10(9).