【摘要】 本文报道了多巴胺 (DA)在磷脂 -月桂酸修饰的玻碳电极上的电化学行为 ,在+ 0 .7～ -0 .4V(vs.Ag/ Ag Cl)电位范围内 ,于 p H 6.4的 0 .0 1 mol/ L的 KH2 PO4 -Na2 HPO4 底液中 ,多巴胺产生很灵敏的氧化峰电流。氧化峰电流与多巴胺浓度在 3 .1× 1 0 - 7～ 1 .2× 1 0 - 4mol/ L范围内呈良好线性关系。该电极可作为检测多巴胺的新型的高灵敏度电化学生物传感器更多还原

【Abstract】 The present work reported the electrochemical behavior of dopamine at a lipid lauric acid modified glassy carbon electrode. In the potential range of +0.7~-0.4 V (vs. Ag/AgCl), a sensitive anodic peak was observed at +0.2 V at the scan rate of 40 mV/s. In the medium of 0.01 mol/L KH 2PO 4 Na 2HPO 4 (pH 6.4), the anodic peak current showed a linear relationship with the concentration of dopamine in the range of 3.1×10 -7 ~1.2×10 -4 mol/L. It can be used as an approach for determining dopamine with high sensitivity.更多还原