聚苏丹红Ⅲ膜修饰电极测定盐酸多巴胺注射液的含量

China Pharmaceuticals(2007)

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Abstract
目的建立测定盐酸多巴胺注射液含量的电化学分析新方法。方法采用循环伏安法研究盐酸多巴胺在膜修饰电极上的电化学行为,以差示脉冲伏安法测定其含量。结果聚苏丹红Ⅲ膜修饰电极对盐酸多巴胺有明显的电催化作用,盐酸多巴胺浓度在0.5~60.0μmol/L范围内与氧化峰电流呈良好线性关系,检测限为0.05μmol/L。结论所用方法结果准确、重现性好,可用于测定盐酸多巴胺注射液的含量。
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Key words
dopamine hydrochloride injection,poly-sudan Ⅲfilm modified electrode,electrochemical assay
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