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Nano-perovskite decorated carbon nanotubes composite for ultrasensitive determination of a cardio-stimulator drug
Journal of Electroanalytical Chemistry ( IF 4.1 ) Pub Date : 2018-03-22
Ekram H. El-Ads, Nada F. Atta, Ahmed Galal, Asmaa R.M. El-Gohary

In this work, a new electrochemical sensor was fabricated based on Sr2PdO3 nano-perovskite manually mixed with carbon nanotubes (CNTs) and casted on glassy carbon (GC) electrode surface; GC/(CNTs-Sr2PdO3). Enhanced sensitivity, selectivity, stability and electron transfer kinetics were realized by the application of nano-perovskite modified carbon nanotubes composite for determination of dobutamine (DB). The proposed sensor showed high electro-catalytic activity in the linear dynamic range of 0.03 μmol L−1 to 50 μmol L−1 with sensitivity of 20.91 μA/μmol L−1, detection limit of 0.012 nmol L−1 and a quantification limit of 0.04 nmol L−1. The proposed method was successfully applied for DB detection in blood serum samples with good recovery results. The sensor showed anti-interfering ability in presence of common interferences as ascorbic acid, uric acid, acetaminophen, serotonin and morphine.



中文翻译:

纳米钙钛矿修饰的碳纳米管复合材料,用于超灵敏测定心脏刺激药

在这项工作中,基于Sr 2 PdO 3纳米钙钛矿手动混合碳纳米管(CNT)并浇铸在玻璃碳(GC)电极表面上,制造了一种新的电化学传感器。GC /(CNTs-Sr 2 PdO 3)。通过应用纳米钙钛矿修饰的碳纳米管复合材料测定多巴酚丁胺(DB),提高了灵敏度,选择性,稳定性和电子转移动力学。所提出的传感器在0.03μmolL -1至50μmolL -1的线性动态范围内显示出高的电催化活性,灵敏度为20.91μA/μmolL -1,检测极限为0.012 nmol L -1定量限为0.04 nmol L -1。该方法成功地用于血清样品中DB的检测,回收率良好。该传感器在常见干扰物如抗坏血酸,尿酸,对乙酰氨基酚,5-羟色胺和吗啡的干扰下均显示出抗干扰能力。

更新日期:2018-03-23
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