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基于,和的共石墨烯量子点设计的光"开启-关闭"探测器:昆纳尔福斯传感的一个案例

Mahendra R Mahajan¹, Pravin O Patil¹

¹Department of Pharmaceutical Chemistry, H. R. Patel Institute of Pharmaceutical Education and Research, Shirpur, Maharashtra, India.

Luminescence : the journal of biological and chemical luminescence

|July 25, 2024

概括

这项研究引入了一种新的"开启-关闭"光传感器,使用/-联合合的石墨烯量子点 (Co/Zn-N-GQDs) 检测昆纳福斯杀虫剂. 该传感器提供了一种灵敏而稳定的方法来分析食品样本中的农药残留物.

科学领域:

材料科学材料科学材料科学
分析化学分析化学
环境科学环境科学

背景情况:

在食品中检测农药对于公共卫生至关重要.
开发敏感和选择性传感器是一个持续的挑战.
石墨烯量子点为传感应用提供独特的光学特性.

研究的目的:

开发一种新的光"开启-关闭-启动"传感器,用于检测昆纳福斯农药.
使用水溶性/-联合合的石墨烯量子点 (Co/Zn-N-GQDs) 作为传感平台.
在真实的蔬菜和水果样本中验证传感器的性能.

主要方法:

通过使用白叶,,和尿素的一热水法合成Co/Zn-N-GQDs.
Co/Zn-N-GQDs的表征,包括发光率,激发和发射光谱.
开发一种基于Cu2+火和昆纳尔斯诱导的光回收的"开启-关闭"传感机制.

主要成果:

Co/Zn-N-GQDs表现出高发光率 (31.49%),激发在320nm,发射在393nm.
通过Cu2+离子观察到选择性光火,随后在添加纳后进行光反应.
传感器显示了低检测极限 (0.11μM) 和宽线性范围 (0.5200μM) 的quinalphos.
在蔬菜和水果样本中检测纳福斯的成功应用,具有高稳定性和可重复性.

结论:

开发的Cu2+-Co/Zn-N-GQDs传感器是有效的敏感和选择性的昆纳福斯检测.
"开启-关闭"光机制为定量分析提供了可靠的方法.
该传感器显示了在食品矩阵中监测纳福斯残留物的实际应用.

关键词:

科巴尔特是什么? 科巴尔特是什么?石墨烯是量子点的量子点.这就是的酸.这是一种昆纳尔斯 (quinalphos).,和的使用情况.

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