Determination of potassium ions in pharmaceutical samples by FIA using a potentiometric electrode based on ionophore nonactin occluded in EVA membrane.
Garcia CA, J?nior LR, Neto Gde O. Determination of potassium ions in pharmaceutical samples by FIA using a potentiometric electrode based on ionophore nonactin occluded in EVA membrane. J Pharm Biomed Anal. 2003 Feb 05; 31(1):11-8.