还原氧化石墨烯La@CeO对磺胺嘧啶的电化学监测

Analytica Pub Date : 2023-07-06 DOI:10.3390/analytica4030023
Francis Packiaraj Don Disouza, R. Sundaresan, Shen-ming Chen, Balaji Ramachandran, N. Chandrasekar
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引用次数: 0

摘要

近年来,抗生素的滥用和倾倒已经对人类健康造成了破坏,并造成了生态毒理学污染。本文利用片状还原氧化石墨烯(RGO)复合材料修饰的镧掺杂氧化铈(LCO)的不规则颗粒纳米枝晶结构来检测磺胺类药物磺胺嘧啶(SZ)。通过水热法制备LCO@RGO纳米复合材料,LCO和RGO之间的协同作用促进了电子的转移性和电导率,提高了SZ检测的电化学性能。制备的LCO@RGO/GCE电极对SZ具有较低的检出限(0.005µM)和线性范围(0.01 ~ 265µM),采用高灵敏度DPV技术进行分析。用DPV法测定制备的LCO@RGO/GCE具有良好的重复性、再现性和储存稳定性。该方法在人血清和河水样品中具有良好的回收率,具有较好的实用性。以上都探讨了合成的LCO@RGO在实际生物和环境样品中对SZ的高灵敏度检测的旺盛和突出的电催化性能。
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Electrochemical Monitoring of Sulfadiazine via La@CeO Incorporated with Reduced Graphene Oxide
In recent years, indiscriminate consumption and dumping of antibiotics have become destructive to human health and causes ecotoxicological pollution. Here, the irregular particle nanosized dendrite structure of lanthanum-doped cerium oxide (LCO) decorated with sheet-like reduced graphene oxide (RGO) composite was utilized to detect the sulfonamide-based drug sulfadiazine (SZ). LCO@RGO nanocomposite was prepared using the hydrothermal method, the synergistic effect between LCO and RGO facilitates electron transferability and conductivity which enhances the electrochemical properties toward the detection of SZ. The detection of SZ expressed a lower detection limit (0.005 µM) and linear range (0.01–265 µM) of the fabricated LCO@RGO/GCE electrode toward SZ, analyzed using the highly sensitive DPV technique. Also, DPV was utilized to determined shows good repeatability, reproducibility, and storage stability of fabricated LCO@RGO/GCE. Moreover, effective practicability was proven in human blood serum and river water samples with great recovery results. All the above probes the synthesized LCO@RGO’s thriving and outstanding electrocatalytic performance of this nanocomposite’s highly sensitive detection of SZ in real biological and environmental samples.
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