【摘要】 本文用自制的碳纤维微电极,经过适当的电化学预处理以后,测定神经递质去甲肾上腺素时,表现出较高的灵敏度.用Nafion修饰后,能有效地消除脑中去甲肾上腺素的主要干扰物抗坏血酸的干扰,线性范围5×10^-8～2×10^-4mol/L,检出下限为2×10^-8mol/L.用这种微电极对注射液中的去甲肾上腺素进行测定,回收率在97.2%～1O2.8%之间.可用于活体分析.更多还原

【Abstract】 An electrochemical pretreatment procedure of carbon fibre microelectrode(CFME) is described. The CFME showed high sensitivity when used in the determination of neuro-transmitter-norepinephrine. It can effectively eliminate the interference of ascorbic acid after modified with Nafion. The linear range is 5×10-8-2×10-4 mol/L, and the detection limit is 2×10-8 mol/L. This electrochemical pretreated CFME coated with Nafion can be used in the determination of norepinephrine in vivo.更多还原