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建立了预阳极化碳糊电极(PACPE)测定肾上腺素(EP)的新方法。实验表明,EP在PACPE上有很好的电化学响应,在pH 7.00的PBS缓冲溶液中,EP的氧化峰电流最大,且与其浓度在2.0×10-7~1.0×10-4mol/L范围内呈良好的线性关系,线性方程为:Ip(μA)=0.4598+0.1544c(μmol/L),相关系数R=0.9981,检出限为2.9×10-8mol/L。方法可用于注射液中EP含量的测定。
A new method for the determination of epinephrine (EP) by pre-anodized carbon paste electrode (PACPE) was established. The experimental results showed that EP had a good electrochemical response on PACPE. The highest oxidation peak current of EP in pH 7.00 PBS buffer solution was obtained. Compared with its concentration in the range of 2.0 × 10-7 ~ 1.0 × 10-4mol / L, The linear equation was: Ip (μA) = 0.4598 + 0.1544c (μmol / L), the correlation coefficient R = 0.9981, the detection limit was 2.9 × 10-8mol / L. The method can be used to determine the content of EP in injection.