研究了柔红霉素(DNR)在β-环糊精(β-CD)修饰金电极上的电化学行为. 结果发现,DNR能在β-CD俢饰电极上发生包络反应,其包络常数为6.1×104 L/mol. 包络的DNR能进行不可逆的电化学反应,反应速率常数为28.03/s. DNR在3~30 μmol/L的浓度范围内,还原峰峰电流与DNR浓度呈线性关系,β-CD修饰电极可用于对DNR的定量检测. 在pH=7.0的中性电解液和温度接近40 ℃时,DNR在β-CD修饰电极上有最好的电化学活性,且β-CD修饰电极对DNR有较低的检出极限.
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