一种基于表面增强拉曼光谱的用于汞离子检测的简单且高灵敏度胸腺嘧啶传感器及机理研究
A Simple and Highly Sensitive Thymine Sensor for Mercury Ion Detection Based on Surface Enhanced Raman Spectroscopy and the Mechanism Study.
作者信息
Yang Hao, Ye Sui-Bo, Fu Yu, Zhang Weihong, Xie Fangyan, Gong Li, Fang Ping-Ping, Chen Jian, Tong Yexiang
机构信息
Instrumental Analysis and Research Centre, Ministry of Education of the Key Laboratory of Bioinorganic and Synthetic Chemistry, The Key Lab of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, Key Laboratory of Environment and Energy Chemistry of Guangdong School of Chemistry, Sun Yat-Sen University, 135 Xingang West Road, Guangzhou 510275, China.
出版信息
Nanomaterials (Basel). 2017 Jul 24;7(7):192. doi: 10.3390/nano7070192.
Mercury ion (Hg) is recognized as one of the most toxic metal ions for the environment and for human health. Techniques utilized in the detection of Hg are an important factor. Herein, a simple thymine was successfully employed as the surface enhanced Raman spectroscopy sensor for Hg ion detection. The limit of detection (LOD) of the developed sensor is better than 0.1 nM (0.02 ppb). This sensor can also selectively distinguish Hg ions over 7 types of alkali, heavy metal and transition-metal ions. Moreover, the LOD of the sensor can even achieve 1 ppb in practical application in the nature system, which is half the maximum allowable level (10 nM, 2 ppb) stipulated in the US Environmental Protection Agency standard. Further investigation of the thymine-Hg-thymine coordination mechanism provides a possible means of detecting other metal ions by replacing the metal ion-specific ligands. This work paves the way for the detection of toxic metal ions and environmental problems.
汞离子（Hg）被认为是对环境和人类健康毒性最大的金属离子之一。用于检测汞的技术是一个重要因素。在此，一种简单的胸腺嘧啶成功地用作表面增强拉曼光谱传感器用于汞离子检测。所开发传感器的检测限（LOD）优于0.1 nM（0.02 ppb）。该传感器还可以在7种碱金属、重金属和过渡金属离子中选择性地区分汞离子。此外，该传感器在自然系统的实际应用中检测限甚至可以达到1 ppb，这是美国环境保护局标准规定的最大允许水平（10 nM，2 ppb）的一半。对胸腺嘧啶-汞-胸腺嘧啶配位机制的进一步研究为通过替换金属离子特异性配体检测其他金属离子提供了一种可能的方法。这项工作为有毒金属离子的检测和环境问题的解决铺平了道路。
Zotero 插件