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１引言醋酸地塞米松为一种抗炎、抗过敏的药物。目前，其含量的测定方法主要有光度法、色谱法等。本文发现醋酸地塞米松在玻碳电极（ＧＣＥ）上有电化学活性，但测定的灵敏度较低。如用Ｎａｆｉｏｎ修饰ＧＣＥ后，氧化峰电流增大两个数量级。２实验部分２．１仪器与试剂ＢＡＳ
1 Introduction Dexamethasone acetate is an anti-inflammatory and anti-allergic drug. At present, the determination of its content mainly photometry, chromatography and so on. This paper found that dexamethasone acetate electrochemical activity in the glassy carbon electrode (GCE), but the determination of low sensitivity. As with Nafion modified GCE, the oxidation peak current increased by two orders of magnitude. 2 Experimental 2.1 Instruments and reagents BAS