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氧化石墨烯-壳聚糖复合膜修饰电极测定尿酸

Journal of Analytical Science(2021)

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Abstract
通过自组装技术,制备了氧化石墨烯-壳聚糖复合膜修饰电极,并研究了尿酸在该修饰电极上的电化学行为.实验表明:该修饰电极对尿酸有较强的电催化作用,分别于电位0.615 V和0.446 V处出现一氧化峰和还原峰.利用差分脉冲伏安技术测定,尿酸浓度在5.0×10-6~3.0×10-4 mol/L范围内与其氧化峰电流呈良好的线性关系,其相关系数R = 0.9989,检出限为1.0×10-7 mol/L.该方法可用于尿液中尿酸含量的测定.
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