Potentiometric determination of mephedrone in oral fluids with ion‐selective membranes

New Validated Potentiometric Determination of Vasodilator Pentoxifylline in its Pharmaceutical Formulations and Biological Fluids

The construction and performance characteristics of pentoxifylline selective electrodes were developed. Two types of electrodes: plastic membrane I and coated wire II were constructed based on the incorporation of pentoxifylline with phosphotungstic acid (PTA). The influence of membrane composition, kind of plasticizer, pH of the test solution, soaking time, and foreign ions on the electrodes w...

Lithium interference with potentiometric sodium determination.

Potentiometric Determination of Coextraction Constants

1 A theoretical treatment of potentiometric data is applied to calculate coextraction 2 constants (K IA) for three potassium salts from water into a liquid nitrobenzene phase. 3 The experiment involves treating nitrobenzene as a membrane and contacting it with 4 two aqueous solutions of different ion activities. In the presence of either a cation or 5 anion exchanger, the ratio of activities of...

Potentiometric pH response of polymer membranes incorporated with ion-exchangers.

Potentiometric Determination of Captopril in Pharmaceutical Formulations

Captopril, chemically know as 1-[(2S)-3mercapto-2-methylpropionyl]-L-proline, (CPT) is used therapeutically as an antihypertensive agent [11, 15], which is also prescribed for the treatment of congestive hart failure [6]. Several types of analytical procedures have been proposed for the analysis of captopril in pharmaceuticals formulations. These procedures include capillary electrophoresis [13...