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基于碳量子点的发光探测器用于量化蓝中的伊米达克洛普里德

Eulogio J Llorent-Martínez¹, Julia Jiménez-López¹, Antonio Ruiz-Medina¹

¹Department of Physical and Analytical Chemistry, Faculty of Experimental Sciences, University of Jaén, Campus Las Lagunillas, E-23071, Jaén, Spain.

Journal of analytical methods in chemistry

|November 8, 2023

概括

我们使用碳量子点 (CQD) 增强了对敏感的发光 (TSL),用于敏感的伊米达克洛普里德检测. 这种基于纳米粒子的新型探针提供了一种可靠的方法,用于选食品质量控制中的农药残留物.

科学领域:

分析化学分析化学
材料科学材料科学材料科学
环境科学环境科学

背景情况:

敏感发光 (TSL) 依赖于分析剂-复杂化来产生信号.
现有的TSL方法需要提高灵敏度和选择性,以便进行准确的分析.
纳米粒子为修改基于发光的检测系统提供了独特的特性.

研究的目的:

开发一种使用纳米粒子进行改进的TSL系统,以提高分析性能.
为了研究碳量子点 (CQDs) 与离子一起用于发光探测的潜力.
应用开发的系统,以敏感地确定新烟类物质伊米达克洛普里德 (IMID).

主要方法:

引入碳量子点 (CQDs) 与碳氧基团,以与离子复合.
使用由此产生的-CQDs系统作为时间解析的发光探测器.
通过测量 terbium-CQDs 系统中的发光灭效应来量化 imidacloprid (IMID).
应用在果中确定IMID残留物的方法.

主要成果:

-CQDs系统表现出与IMID度 (100-2500 ng·mL-1) 相称的发光灭效应.
通过TSL-纳米粒子探针,IMID的检测极限为30 ng·mL−1.
在果中获得了0.9 mg·kg-1的方法检测极限,低于食品法典的MRL.
在各种果样本中观察到高回收率 (近100%).

结论:

通过将CQD与terbium离子集成,可以创建一个有效的时间分辨率发光探针.
开发的纳米粒子增强TSL方法显示出高灵敏度和选择性,用于确定伊米达克洛普里德.
这种方法适用于在质量控制实验室中选农药残留物,确保食品安全合规性.

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