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首页> 外文期刊>Electrochimica Acta >Electrochemical behavior of a carbon paste electrode modified with 5-amino-3',4'-dimethyl-biphenyl-2-ol/carbon nanotube and its application for simultaneous determination of isoproterenol, acetaminophen and N-acetylcysteine
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Electrochemical behavior of a carbon paste electrode modified with 5-amino-3',4'-dimethyl-biphenyl-2-ol/carbon nanotube and its application for simultaneous determination of isoproterenol, acetaminophen and N-acetylcysteine

机译：5-氨基-3'，4'-二甲基-联苯-2-醇/碳纳米管修饰的碳糊电极的电化学行为及其在同时测定异丙肾上腺素，对乙酰氨基酚和N-乙酰半胱氨酸中的应用

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摘要

In this study, a carbon paste electrode modified with carbon nanotubes and 5-amino-3',4'-dimethylbiphenyl-2-ol (5ADB) was used to prepare a novel electrochemical sensor. The objective of this novel electrode modification was to seek new electrochemical performances for the detection of isoproterenol (IP) in the presence of acetaminophen (AC) and N-acetylcysteine (NAC). The peak potentials recorded in a phosphate buffer solution (PBS) of pH 7.0 were 265, 445 and 950 mV vs. Ag/AgCl/KCl (3.0 M) for IP, AC and NAC, respectively. Under the optimum pH of 7.0, the oxidation of IP occurred at a potential about 215 mV less positive than that of the unmodified CPE. The response of catalytic current with IP concentration showed a linear relation in the range from 4.0 × 10~(-7) to 9.0 × 10~(-4) M with a detection limit of 2.0 × 10~(-7) M.
机译：在这项研究中，碳纳米管和5-氨基-3'，4'-二甲基联苯-2-醇（5ADB）修饰的碳糊电极用于制备新型电化学传感器。这种新型电极修饰的目的是寻求在对乙酰氨基酚（AC）和N-乙酰半胱氨酸（NAC）存在下检测异丙肾上腺素（IP）的新电化学性能。对于IP，AC和NAC，相对于Ag / AgCl / KCl（3.0 M），pH 7.0的磷酸盐缓冲溶液（PBS）中记录的峰值电势分别为265、445和950 mV。在7.0的最佳pH下，IP的氧化反应发生的电势比未改性的CPE的正电性低约215 mV。 IP浓度下催化电流的响应在4.0×10〜（-7）M至9.0×10〜（-4）M范围内呈线性关系，检出限为2.0×10〜（-7）M.

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