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Electrochemical sensing of gatifloxacin using Ag2S/RGO nanocomposite

文献类型： 外文期刊

作者： Yao, Chunxia 1 ; Liang, Ying 4 ; Huang, Sai 1 ; Liu, Chengbin 1 ; Song, Wei 1 ; Song, Weiguo 1 ;

作者机构： 1.Shanghai Acad Agr Sci, Inst Agrofood Stand & Testing Technol, Shanghai 201403, Peoples R China

2.Minist Agr & Rural Affairs, Key Lab Food Qual Safety & Nutr Coconstruct Minist, Shanghai 201403, Peoples R China

3.Shanghai Engn Res Ctr Agriprod Qual & Safety, Shanghai 201403, Peoples R China

4.Shanghai Univ Med & Hlth Sci, Sch Pharm, Shanghai 201318, Peoples R China

5.Shanghai Inst Technol, Sch Mat Sci & Engn, 100 Haiquan Rd, Shanghai 201418, Peoples R China

关键词： Silver sulfide; Reduced graphene oxide; Electrochemical sensor; Gatifloxacin; Real sample

期刊名称：ARABIAN JOURNAL OF CHEMISTRY （ 影响因子：5.2； 五年影响因子：5.6 ）

ISSN： 1878-5352

年卷期： 2024 年 17 卷 12 期

页码：

收录情况： SCI

摘要： As a widely-used fluoroquinolone antibiotics, 1-Cyclopropyl-6-fluoro-8-methoxy-7-(3-methyl-1-piperazinyl)-4oxo-1,4-dihydro-3-quinolinecarboxylic acid (gatifloxacin, GAT) has aroused much concern recently and it is of great importance to realize the accurate and efficient detection. Herein, the silver sulfide/reduced graphene oxide composite (Ag2S/RGO) was synthesized with one-pot method and was coated on the glassy carbon electrode to develop an effective electrochemical sensor for GAT. After the optimization of the size of Ag2S, the pH of buffer solution, and the scanning rate, the Ag2S/RGO modified electrode exhibits good linear relationship to GAT within wide ranges of 0.2 mu M- 20 mu M and 20 mu M- 250 mu M with a detection limit of 0.0667 mu M. Besides, the proposed sensor shows good selectivity to GAT versus multiple interferences, including organic compounds, ions, and other antibiotics. At last, the proposed sensor was successfully applied in the GAT analysis in various real samples (including shrimp, fish, and chicken) with satisfying recoveries of 91.8 %- 102.4 %. In general, the proposed Ag2S/RGO-based electrochemical sensor provides a novel strategy for the GAT analysis, which is of significance for the development of efficient analytical techniques for antibiotics.

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