基于CdTe量子点和石墨烯量子点混合物的比度光传感器,用于饮料中银的定量分析
Li Jin1, Lan Li1, Xiaodan Zeng1
1School of Chemical and Pharmaceutical Engineering, Jilin Institute of Chemical Technology, Jilin 132022, China.
Food chemistry
|July 24, 2023
概括
一个新的比度光传感器系统 (GCS) 能够对饮料中的银离子 (Ag+) 进行视觉和定量检测. 这种方法提供了更好的特异性和抗干扰能力,用于更安全的食品和饮料分析.
科学领域:
- 分析化学 分析化学
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
背景情况:
- 银纳米粒子 (AgNPs) 用于抗菌应用,但它们的浸出到饮料中会给健康带来风险.
- 目前的方法,如对AgNPs的单波长光分析,缺乏特异性,容易受到干扰.
- 评估消耗品中的银离子 (Ag+) 存在对于公共健康和安全至关重要.
研究的目的:
- 开发一种新型的比度光传感器系统 (GCS) 用于对银离子 (Ag+) 的敏感和选择性检测.
- 为了使Ag+在饮料等复杂矩阵中能够进行视觉和定量分析.
- 克服现有的银探测分析技术的局限性.
主要方法:
- 开发和应用一个比度光传感器系统 (GCS).
- 使用光强度比 (F424nm/F570nm) 进行Ag+的定量分析.
- 视觉观察GCS的颜色变化,以应对不同的Ag+度.
主要成果:
- GCS 显示了不同Ag+度的可分辨的颜色变化,有助于视觉检测.
- 在Ag+度和光强度比率 (F424nm/F570nm) 之间建立了强烈的线性相关性.
- 传感器实现了Ag+的0.2266nmol/L的低检测极限,具有良好的选择性和回收率.
结论:
- 开发的GCS为饮料样品中Ag+的视觉和定量检测提供了一个有效的平台.
- 与传统方法相比,这种传感器系统提供了更高的特异性和抗干扰性.
- 银离子系统有可能用于食品和饮料行业中常规监测银离子污染.
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