Voltammetric Simultaneous Determination of Ascorbic Acid and Acetaminophen Based on Graphite Screen Printed Electrode Modified with a La3+-Doped ZnO Nanoflowers
نویسندگان
1 Department of Chemistry, Kerman Branch, Islamic Azad University, Kerman, I.R. IRAN
2 Environment Department, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman, I.R. IRAN
3 NanoBioElectrochemistry Research Center, Bam University of Medical Sciences, Bam, I.R. IRAN
4 Department of Chemistry, Kerman Branch, Islamic Azad University, Kerman, I.R. IRAN
5 NanoBioElectrochemistry Research Center, Bam University of Medical Sciences, Bam, I.R. IRAN
doi
10.30492/ijcce.2020.103277.3458چکیده
In this work, an easy method was employed to successfully develop La3+-doped ZnO nanoflowers and Guar-Gum (GG) modified screen printed electrode (La3+/ZnO/GG/SPE), and La3+/ZnO/GG/SPE was applied for the electrochemical detection of Ascorbic Acid (AA). The electrochemical methods, such as Cyclic Voltammetry (CV), chronoamperometry (CHA), and Differential Pulse Voltammetry (DPV) were used to evaluate the electrochemical performances toward ascorbic acid on the La3+/ZnO/GG/SPE. Good linear-ship was observed for ascorbic acid in the ranges of 1.0–700.0 µM, with the detection limits of 0.03 µM. Moreover, this sensor proved favorable to simultaneously determine ascorbic acid and acetaminophen. Finally, the modified electrode has fairly good performance during the employment of real sample analysis to determine the content of ascorbic acid. These results indicate that the La3+-doped ZnO nanoflowers are supposed to be a promising material in the electrochemical determination of ascorbic acid and acetaminophen in real samples.
