纳米Fe_2O_3修饰涂碳型硫酸沙丁胺醇选择电极的研制与应用

制备了以纳米Fe_2O_3为修饰剂的涂碳型硫酸沙丁胺醇选择电极,采用电位分析方法对其各项性能进行测定。结果表明,该纳米Fe_2O_3修饰电极有很好的能斯特响应,其线性范围为1.0×10~(-6)~0.1 mol/L,级差电位为59 mV/pC,与普通电极相比,响应时间较短(10 s),检出限更低(2.8×10~(-7)mol/L)。将修饰电极应用于猪肉样品中硫酸沙丁胺醇含量的测定,结果与标准方法结果相符。

Preparation and Application of Carbon Coated Polyvinyl Chloride Membrane Salbutamol Sulfate Selective Electrode Modified with Nano-Fe2O3

A potentiometric method was developed for the determination of salbutamol sulfate by using a novel carbon coated polyvinyl chloride membrane salbutamol sulfate selective electrode modified with nano-Fe2O3.The prepared electrode showed a good Nernst response in the linear range of 1.0 × 10-6 -0.1 mol/L with a slope of 59 mV/pC.Compared to the unmodified electrode,the electrode modified with nano-Fe2O3 exhibited a faster response time(10 s) and a lower detection limit(2.8 × 10-7 mol/L).The modified electrode was applied in the determination of salbutamol sulfate in pork samples,and the results were in agreement with those obtained by the standard method.