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纳米铂-石墨烯修饰电极测定氧氟沙星 |
Determination of Loxacin by Platinum Nanoparticles Graphene Modified Electrode |
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DOI: |
中文关键词: 氧氟沙星 铂纳米颗粒 石墨烯 差分脉冲伏安法 修饰电极 水质 |
英文关键词: Ofloxacin Platinum nanoparticles Graphene DPV Modified electrode Water quality |
基金项目:国家自然科学基金资助项目(41731282);北京市自然科学基金资助项目(8182049) |
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中文摘要: |
采用多电位阶跃法将铂纳米颗粒(PtNPs)沉积于石墨烯(Gr)修饰的玻碳电极(GCE)表面,制备PtNPs/Gr/GCE修饰电极,用于测定氧氟沙星(OFL),并考察OFL在该修饰电极上的电化学行为。通过优化试验条件,方法分别在075μmol/L~50μmol/L和75μmol/L~250μmol/L范围内线性良好,检出限为002μmol/L。将PtNPs/Gr/GCE修饰电极用于实际自来水和地下水样品测定,结果均为未检出,加标回收率为953%~102%,RSD为10%~28%。 |
英文摘要: |
A method for the determination ofloxacin(OFL) by PtNPs/Gr/GCE modified electrode prepared by depositing platinum nanoparticles(PtNPs) on the surface of glassy carbon electrode(GCE) modified with graphene(Gr) was established using multi potential step method. The electrochemical behavior of OFL on the modified electrode was studied. By optimizing the experimental conditions, the method had good linearity in the ranges of 0.75μmol/L~50μmol/L and 75μmol/L~250μmol/L. The detection limit was 0.02μmol/L. Applying PtNPs/Gr/GCE modified electrode in determining practical tap water and groundwater samples, the results were not detected. The spiked recoveries were from 95.3% to 102%,and the relative standard deviations were from 1.0% to 2.8%. |
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