الخلاصة

Reduction potential for carvedilol, atenolol and Propranolol was determined by polarographic style used. Hanging Mercury Dropping Electrode (HMDE), all these pharmaceutical compounds was electro active with half wave potential E1/2 of 0.148, 0.112 and 0.118 V respectively, PH effect on the polarographic potential wave was study in phosphate buffer solution with a concentration of 0.98×10-5, 1.12×10-5 and 1.15×10-5 M for carvedilol, atenolol and Propranolol respectively, the values of pH ranged at 5, 6, 7.4, 8. The result showed that the values of half wave potential E1/2 inversely proportional with pH and diffusion current (id) is directly proportional.