基于柔性集成三电极和智能手机的便携传感器快速检测磺胺甲噁唑

Portable sensor based on flexible integrated three-electrode and smart phone for rapid detection of sulfamethoxazole

中文关键词:  激光诱导多孔石墨烯  柔性集成三电极  智能便携式传感器  磺胺甲噁唑

英文关键词:laserinduced porous graphene  flexible integrated three-electrode  intelligent portable sensor  sulfamethoxazole

中文摘要:

      目的 制备一种对磺胺甲噁唑(sulfamethoxazole, SMZ)有检测性能的柔性集成三电极, 构建基于智能手机和柔性电极的便携传感方法。方法 以柔性聚酰亚胺薄膜为基底, 采用激光诱导刻蚀技术制备激光诱导多孔石墨烯(laser-induced porous graphene, LIPG)柔性集成三电极。将制备的电极插入mini电化学工作站接口, 与智能手机蓝牙连接构建智能便携式传感器。结果 本方法制备的LIPG电极在8.75–55.00 μmol/L的浓度范围内, SMZ浓度与峰电流呈现出良好的线性关系, r2为0.9985, 检出限为2.87 μmol/L。以鲜奶为样品添加回收率为96.0%~100.5%。结论 本研究制备的LIPG柔性集成三电极可以替代传统刚性三电极构建智能便携式传感器。以智能手机为操作界面, 具有携带方便、响应快速等优势, 适用于现场快速检测。

英文摘要:

      Objective To prepare a flexible integrated three-electrode capable of detecting sulfamethoxazole (SMZ), and construct a portable sensing method based on smart phones and flexible electrodes. Methods Based on flexible polyimide, laser induced etching technology was used to prepare the laser-induced porous graphene (LIPG) flexible integrated three-electrode. The prepared electrode was inserted into the mini electrochemical workstation interface, and the intelligent portable sensor was constructed by bluetooth connection with the smart phone. Results The LIPG electrode prepared by aboved methods showed a good linear relationship between SMZ concentration and peak current in the concentration ranges of 8.75–55.00 μmol/L, r2 of 0.9985, and the limit of detection was 2.87 μmol/L. The recoveries were 96.0%?100.5% in spiked fresh milk samples. Conclusion The LIPG flexible integrated three-electrode prepared in this study can replace the traditional rigid three electrodes to construct an intelligent portable sensor. With smart phone as the operating interface, it has the advantages of easy to carry and quick response, and is suitable for rapid on-site detection.