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将四(5,6-二氢-1,4-二噻英)四氮杂卟啉(FePz(dtn)4)通过电沉积的方式固载在玻碳电极上,该电极在抗坏血酸(AA)和尿酸(UA)等干扰物存在下,可选择性地检测多巴胺(DA).对比裸电极,在循环伏安测量中修饰过后的电极在氧化电位处对DA表现出良好的电催化活性.并且出现一对可逆的氧化还原峰,阳极和阴极的电位值分别为0.182V和0.142V.在电解质溶液中氧化峰电流随着DA的浓度线性增加.两个线性范围分别是1～10和10～200μg/mL,相关系数分别为0.996 7和0.998 8.检出限为0.3μg/mL.
Tetrakis (5,6-dihydro-1,4-dithiinato) porphyrazine (FePz (dtn) 4) was electrodeposited on glassy carbon electrode, which was coated on ascorbic acid (AA) And uric acid (UA), etc. The dopamine (DA) was selectively detectable in the presence of disruptors such as uric acid (UA), etc. Compared with the bare electrode, the modified electrode showed good electrocatalytic activity at DA at the oxidation potential in cyclic voltammetry and A pair of reversible redox peaks appeared, the anode and cathode potentials were 0.182V and 0.142V respectively.The peak current of oxidation increased linearly with the concentration of DA in the electrolyte solution.The two linear ranges were 1 ~ 10 and 10 ~ 200μg / mL, the correlation coefficients were 0.996 7 and 0.998 8. The detection limit was 0.3μg / mL.