基于双硫腙修饰银纳米材料的铅离子循环表面增强拉曼检测

Dithizone Modified Silver Nanomaterials for Recyclable Surface-enhanced Raman Spectroscopy Detection of Lead Ions

该研究以重金属铅离子(Pb^(2+))为研究对象,构建双硫腙修饰的银纳米颗粒,利用氧化-还原法和表面增强拉曼技术,成功实现了对铅离子的循环表面增强拉曼检测。该功能材料对铅离子的检测响应范围为1 nM~10 μM,检出限可达0.35 nM,将该方法用于实际环境水样中铅离子的检测,回收率为91.6%~106.8%,相对标准偏差在4.1%~7.9%之间。该方法具有操作简单、测定快速和可重复使用等特点,因而在环境样品中重金属离子快速检测方面具有巨大的应用前景。且该研究对环境中其他污染物的研究提供了重要的参考信息。

The study took heavy metal lead ions(Pb^(2+))as the research object,constructed dithizone-modified silver nanoparticles,and successfully realized the cyclic surface-enhanced Raman detection of lead ions by using redox method and surface enhanced Raman technology.The detection response range of functional materials to lead ions is 1nM~10μM,and the detection limit can reach 0.35nM.Using the method to detect lead ions in actual environmental water samples,the recovery rate is 91.6%~106.8%,and the relative standard deviation is between 4.1%and 7.9%.The method has the characteristics of convenience,rapidity and reusability,and has a huge application prospect in the rapid detection of heavy metal ions in environmental samples.