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一个基于蓝色/红色碳量子点的分子印记比例计光传感器,用于视觉测定硫胺

Yin Dai¹, Wei Xu¹, Junqiang Hong²

¹School of Pharmacy, Nanjing Medical University, Nanjing, Jiangsu, 211166, China.

Biosensors & bioelectronics

|August 5, 2023

概括

一个新的基于智能手机的传感器可以检测胺 (TMX) 农药残留物. 这种可靠的方法可在食品和环境样本中可视检测TMX,以提高安全性.

科学领域:

环境科学环境科学
分析化学分析化学
材料科学材料科学材料科学

背景情况:

尼奥尼科丁类药物,如蒂亚米 (TMX),是广泛使用的杀虫剂,可以在环境中积累.
环境中的TMX残留物对人类健康和生态系统构成风险.
敏感和可靠的检测方法对于监测TMX污染至关重要.

研究的目的:

开发一种新,灵敏和选择性的传感系统,用于现场检测硫 (TMX).
创建一个智能手机支持的平台,用于可访问的农药残留监测.

主要方法:

开发一个以蓝色排放碳点包裹在分子印记层 (B-CDs@MIPs) 和红色排放碳点 (R-CDs) 作为内部参考的比度光传感系统.
使用光信号比率变化和颜色变化 (红色到蓝色) 进行TMX量化.
用食品和环境样本验证传感系统的有效性.

主要成果:

传感器在光分析中达到13.5nm的检测极限 (LOD),在视觉测定中达到70.1nm.
光信号比率随着TMX度的增加而增加,使可视化色彩变化检测成为可能.
验证研究显示,在真实样本中,恢复率高 (91.40%至105.7%).

结论:

开发的智能手机支持的分子印记比度流星传感器为TMX检测提供了一种可靠和敏感的方法.
该系统为在复杂的环境矩阵中现场视觉检测农药残留物提供了有希望的前景.
这项技术促进了对TMX污染的广泛监测,有助于环境和人类的安全.

关键词:

碳点是一些碳点.分子印记聚合物的分子印记.电比测量光传感器传感器一个智能手机的智能手机.蒂亚美索克萨姆 (thiamethoxam) 是一种药物.视觉检测视觉检测是一种视觉检测.

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