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在 0 .1mol/ L HCl介质中 ,西咪替丁有一个不可逆的吸附还原波 ,峰电位为 - 0 .99V (对 SCE) ,二次微分峰电流与西咪替丁浓度在 2× 10 - 7～ 7× 10 - 6 mol/ L 范围内呈线性关系 ,相关系数 r=0 .998。单扫描示波极谱法方法简便快速 ,测定西咪替丁片剂中西咪替丁含量 ,结果与标示量能很好符合 ,平均回收率为 99.7%。
In 0.1 mol / L HCl medium, cimetidine had an irreversible adsorption reduction wave with a peak potential of -0.99 V (vs. SCE), a secondary differential peak current of 2 × 10 - The linear relationship was found between 7 and 7 × 10-6 mol / L with a correlation coefficient of r = 0.998. The single-sweep oscillopolarography method is simple and rapid. The content of cimetidine in cimetidine tablets was determined. The result was in good agreement with the labeled amount. The average recovery was 99.7%.