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基于酪氨酸修饰的银纳米粒子高效比色测定锰(Ⅱ)

Highly Efficient Colorimetric Sensing of Mn2+ by Using Tyrosine Modified Silver Nanoparticles

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【作者】 李鸣凤田大慧朱昌青

【Author】 Li Mingfeng 1,Tian Dahui 2,Zhu Changqing 3(1.Rugao Normal College,Rugao 226500,Jiangshu China;2.Wuhu Institute of Technology,Wuhu 241000,Anhui China;3.College of Chemistry and Materials Science,Anhui Normal University,Wuhu 241000,Anhui China)

【机构】 如皋高等师范学校芜湖职业技术学院安徽师范大学化学与材料科学学院

【摘要】 以酪氨酸为模板,成功合成了具有强消光系数和表面等离子共振效应的银纳米粒子(Tyr-Ag),并测试了其与一些金属离子的相互作用.实验表明,在碱性条件下,Mn2+的存在能够导致Tyr-Ag迅速聚集,使其颜色由橙黄色变成棕褐色,而其他的离子则几乎没有这种反应.据此,建立了一种高效检测Mn2+的方法.最佳条件下,检测限可达到5.91×10-10mol/L.将该法用于实际样品中Mn2+的测定,结果令人满意.

【Abstract】 Directed by tyrosine,silver nanoparticles with high extinction coefficient and surface plasmon resonance properties were successfully synthesized(Tyr-Ag).And their interactions with some metal cations were investigated.It was indicated that Tyr-Ag aggregated in the presence of Mn2+ under the alkaline conditions,followed by the colour changing from orange yellow to chocolate brown,while other cations had little effect on Tyr-Ag.Thus,a highly efficient method for the determination of Mn 2+ has been developed.Under the optimum conditions,the detection limit was 5.91×10-10 mol/L.The method was applied to the determination of Mn2+ in real samples,and satisfied results were obtained.

【关键词】 银纳米粒子酪氨酸比色法Mn2+
【Key words】 silver nanoparticlestyrosinecolorimetryMn2+
【基金】 国家自然科学基金项目(21175003)
  • 【分类号】O657.32
  • 【被引频次】1
  • 【下载频次】101
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