【摘 要】
：
目的研究螺旋霉素电化学行为,建立一种直接测定螺旋霉素的新方法。方法循环伏安法,差示脉冲伏安法。结果在pH=8.0的NaH2PO4-Na2HPO4缓冲液中,螺旋霉素于650 mV(vs.SCE)产生一
【机 构】
：
河南省疾病预防控制中心,安阳市质量技术监督检验测试中心,
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目的研究螺旋霉素电化学行为,建立一种直接测定螺旋霉素的新方法。方法循环伏安法,差示脉冲伏安法。结果在pH=8.0的NaH2PO4-Na2HPO4缓冲液中,螺旋霉素于650 mV(vs.SCE)产生一个氧化峰,其电化学反应过程是一个电子、一个质子转移的不可逆氧化反应,且其氧化峰电流与其浓度在8.0×10-8mol/L~6.0×10-4mol/L范围内呈良好的线性关系,检出限为7.4×10-8mol/L。结论测定了螺旋霉素的电化学动力学参数,建立了一种直接测定螺旋霉素的新方法 。
Objective To study the electrochemical behavior of spiramycin and to establish a new method for direct determination of spiramycin. Methods Cyclic voltammetry, differential pulse voltammetry. Results Spiramycin produced an oxidation peak at 650 mV (vs.SCE) in NaH2PO4-Na2HPO4 buffer solution at pH = 8.0. The electrochemical reaction was an electron, a proton-transfer irreversible oxidation reaction, and its oxidation peak The current showed a good linear relationship with the concentration of 8.0 × 10-8mol / L to 6.0 × 10-4mol / L with the detection limit of 7.4 × 10-8mol / L. Conclusion The electrokinetic parameters of spiramycin were determined, and a new method for direct determination of spiramycin was established.
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