A Real-Time Detection Method of Hg2+ in Drinking Water via Portable Biosensor: Using a Smartphone as a Low-Cost Micro-Spectrometer to Read the Colorimetric Signals
文献类型： 外文期刊
作者： Gu, Yifan 1 ; Jiao, Leizi 2 ; Cao, Fengjing 2 ; Liu, Xinchao 1 ; Zhou, Yunhai 2 ; Yang, Chongshan 2 ; Gao, Zhen 2 ; Zhang, Mengjie 1 ; Lin, Peng 1 ; Han, Yuxing 3 ; Dong, Daming 2 ;
作者机构： 1.South China Agr Univ, Coll Elect Engn, Coll Artificial Intelligence, Guangzhou 510642, Peoples R China
2.Beijing Acad Agr & Forestry Sci, Natl Res Ctr Intelligent Equipment Agr, Beijing 100097, Peoples R China
3.Tsinghua Univ, Shenzhen Int Grad Sch, Shenzhen 518055, Peoples R China
4.Tsinghua Univ, RIOS Lab, Shenzhen 518055, Peoples R China
关键词： colorimetric sensor; smartphone; micro-spectrometer; gold nanoparticle; Hg2+ detection
期刊名称：BIOSENSORS-BASEL （ 影响因子：5.743； 五年影响因子：5.972 ）
ISSN：
年卷期： 2022 年 12 卷 11 期
页码：
收录情况： SCI
摘要： This paper reported a real-time detection strategy for Hg2+ inspired by the visible spectrophotometer that used a smartphone as a low-cost micro-spectrometer. In combination with the smartphone's camera and optical accessories, the phone's built-in software can process the received light band image and then read out the spectral data in real time. The sensor was also used to detect gold nanoparticles with an LOD of 0.14 mu M, which are widely used in colorimetric biosensors. Ultimately, a gold nanoparticles-glutathione (AuNPs-GSH) conjugate was used as a probe to detect Hg2+ in water with an LOD of 1.2 nM and was applied successfully to natural mineral water, pure water, tap water, and river water samples.
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