【摘要】 在由酸性至碱性的水溶液中均获得了核固红的极谱吸附波,证实在酸性底液中核固红在汞电极上的吸附符合Frumkin等温式.对pH由7至11的碱性底液中核固红电还原的ECE机制作了研究,还获得并研究了在pH11附近,乙二胺-氯化钾底液中的稀土-核固红体系的极谱络合吸附波。更多还原

【Abstract】 In acidic or basic buffer solution, nuclear fast red （NFR） exhibits an adsorptivewave. The electrode processes have been verified as an ECE mechanism. The rateconstant of the first order chemical reaction following electrochemical reaction hasbeen measured by means of cyclic voltammetry. At pH 4.75, on the surface ofmercury electrode, the adsorption of NFR obeys Frumkin isotherm. The adsorptioncoefficient β= 7.2×10⁶ and the interaction factor υ= 0.39 have been determined. Inthe supporting electrolyte containing 0.1 mol·L^-1 ethylene diamine and 0.3 mol·L^-1KCl, at pH 11, the polarographic adsorptive complex wave of RE（Ⅲ）-NFR has beenobtained by using single-sweep polarograph. The electrode processes has been studied.更多还原