Browsing by Author "Workie, Bizuneh"

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    Normal Pulse Polarographic Determination of Kinetic Parameters
    (Addis Ababa,University, 1988-06) Workie, Bizuneh; Solomon, Theodros (PhD)
    ~he proc ~dur ~ that has b~on d~vo lop e d by P. M~r ic B m , Il! . ,jlstruc , and X • •• ndriou [ lJ for tho deterrainotion of Idnetic p aram<.. t e l's of 8iopl0 ul t:lct r ode reactions using nornal pulse pol nrogr sphy has bu ttn tu s ttld by applying the tl:chni quo to gUllsi- reversibl e po l nrogrRphic el ectr ode r uc.iuctlon of Zn(II) and , to irrt:tvc roib l e pol arographic electrode reductions of Gr ( 111) and Ni(II) . ~ho obtained I ~ inetic parGUlcterc have butln coopered with values computod with previously cctablishud lluthod s . Hn alternative 510},l ur procedure for t he ev a l uat ion of kinetic pararlwtcr s of s i IOplu e l e ctrode r eactions by norLlol pulse .,!.'o l c,x0Lr a hy hau been proposed . 1.'ho c c thod has boon devised. by for mul ating s inul t uneolls equations froIl the logarithr.lic form of rAatsuda ' s equation [2J for the r ate constflIlt DJ1d usinG cX].Jl! riI!lt:ntnl paraI!lcters of :, th t~ NPP wave , namely , the half WHVC potenti al Ey2 and three quart er wave. pot vntial E;/4' This techni que has been t est ed on th0 rbovQ nent~ oned ~ l cct rod e r eduction of Zn(n) , NiCn) , ond Cr(nI) . lwsults obtained are in Bood oBreeOtnt ~'lith values CODlJuted by other methods . Httcmpts have 0.1 80 been cade to study the e ff ~c t of th~ supporting el ~c trolytc concentration on the kinetic pnrRnlct ers .