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Citation: Min Jing, Li Nan-Qiang. Studies on the Polarographic Behaviors of Nuclear Fast Red and the Rare Earth(III)-Nuclear Fast Red System[J]. Acta Physico-Chimica Sinica, ;1990, 6(03): 341-346. doi: 10.3866/PKU.WHXB19900317 shu

Studies on the Polarographic Behaviors of Nuclear Fast Red and the Rare Earth(III)-Nuclear Fast Red System

Min Jing ,
Li Nan-Qiang

1.
Department of Chemistry, Peking University, Beijing

Received Date: 29 September 1988
Available Online: 15 June 1990

In acidic or basic buffer solution, nuclear fast red (NFR) exhibits an adsorptive wave. The electrode processes have been verified as an ECE mechanism. The rate constant of the first order chemical reaction following electrochemical reaction has been measured by means of cyclic voltammetry. At pH 4.75, on the surface of mercury electrode, the adsorption of NFR obeys Frumkin isotherm. The adsorption coefficient β= 7.2×10~6 and the interaction factor υ=0.39 have been determined. In the supporting electrolyte containing 0.1 mol·L~(-1) ethylene diamine and 0.3 mol·L~(-1) KCl, at pH 11, the polarographic adsorptive complex wave of RE(III)-NFR has been obtained by using single-sweep polarograph. The electrode processes has been studied.
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