【摘要】 在含有Ag+、Ni2+、K3Fe(CN)6的胶体混合溶液中,用电化学沉积方法制备了铁氰化镍/银复合膜(NiHCF/Ag)修饰石墨电极(SG).在pH 5.00的醋酸-醋酸铵缓冲液中,NiHCF/Ag/SG修饰电极对盐酸麻黄碱的电极反应有催化作用,盐酸麻黄碱还原峰的峰电流与浓度在8.00×10-6~1.30×10-3mol/L范围内呈良好线性关系(r=0.982),检出限为5.00×10-7mol/L.该电极已成功用于医用注射液中盐酸麻黄碱含量的测定,回收率为95.4%~104%.更多还原

【Abstract】 The mixed inorganic nickel and silver hexacyanoferrate(NiHCF/Ag) is deposited on a graphite(SG) electrode by electrochemical deposition in a colloidal mixed solution containing Ag+、Ni2+ and K3Fe(CN)6.Further experimental results indicate that NiHCF/Ag has electrocatalytic activities toward the EphedrineHydrochloride in HAc-NH4Ac buffer solution(pH5.00).There is an excellent linearity between reductive current and concentration of EphedrineHydrochloride in the range 8.00×10-6～1.30×10-3mol/L(r=0.982) with a detection limit of 5.00×10-7mol/L.Its recovery rate is between 95.4% and 104%.This method has been applied to the determination of the content of EphedrineHydrochloride injections.更多还原