Dong Daming, Jiao Leizi, Du Xiaofan, Zhao Chunjiang
National Engineering Research Center for Information Technology in Agriculture, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China.
Chem Commun (Camb). 2017 Apr 20;53(33):4546-4549. doi: 10.1039/c6cc09695f.
In this study, we developed a substrate to enhance the sensitivity of LIBS by 5 orders of magnitude. Using a combination of field enhancement due to the metal nanoparticles in the substrate, the aggregate effect of super-hydrophobic interfaces and magnetic confinement, we performed a quantitative measurement of copper in solution with concentrations on the ppt level. We also demonstrated that the substrate improves quantitative measurements by providing an opportunity for internal standardization.
在本研究中，我们开发了一种基底，可将激光诱导击穿光谱（LIBS）的灵敏度提高5个数量级。利用基底中金属纳米颗粒产生的场增强、超疏水界面的聚集效应和磁约束的组合，我们对浓度处于皮克/升水平的溶液中的铜进行了定量测量。我们还证明，该基底通过提供内部标准化的机会改善了定量测量。
