基于黄金纳米颗粒的选择性和高效的光谱测定对昆虫杀虫剂甲胺的测定
Abu Talha1, Daim Asif Raja1, Dilshad Hussain1
1H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences (ICCBS), University of Karachi, Karachi, 75270, Pakistan.
Mikrochimica acta
|February 27, 2024
概括
一种使用聚乳酸稳定黄金纳米粒子 (PLA-AuNPs) 的新型纳米尺寸化学传感器提供了一种快速且廉价的检测有毒杀虫剂甲胺 (MET) 的方法. 这种传感器可以在没有复杂的实验室设备的情况下,在各种样本中进行准确的现场定量.
科学领域:
- 纳米技术纳米技术
- 化学传感器 化学传感器
- 环境科学 环境科学
背景情况:
- 甲胺 (MET) 是一种高度有毒的杀虫剂,广泛用于农业和城市害虫防治.
- 准确和快速检测MET对于确保食品安全和环境保护至关重要.
- 现有的检测方法可能耗时,昂贵,或需要专门的实验室设置.
研究的目的:
- 开发一种可靠,快速,廉价的纳米尺寸化学传感器,用于选择性检测甲基米多 (MET).
- 为化学传感应用合成和表征聚乳酸稳定黄金纳米粒子 (PLA-AuNPs).
- 评估开发的传感器在各种样本矩阵中进行定量MET检测的性能.
主要方法:
- 通过一二相化学还原方法合成聚乳酸稳定黄金纳米粒子 (PLA-AuNPs).
- 在与MET相互作用时对PLA-AuNPs进行色度和光谱分析.
- 对其他杀虫剂,金属盐和药物等常见干扰物质的传感器选择性的评估.
- 确定关键的分析参数,包括检测极限 (LOD),量化极限 (LOQ) 和线性动态范围 (LDR).
主要成果:
- 在添加MET后,PLA-AuNPs表现出明显的颜色变化,从葡萄酒红色到灰蓝色.
- 表面等离子体共振 (SPR) 波段中显著的低色和高色变化证实了MET检测.
- 传感器显示出高选择性,没有其他测试化合物的显著干扰.
- 实现了0.0027μM的LOD,0.005μM的LOQ,以及MET检测的0.005-1000μM的LDR.
结论:
- 开发的基于PLA-AuNP的化学传感器为量化MET提供了一种高效,快速,准确和选择性的方法.
- 该传感器适用于在食品,生物和环境样本中现场确定MET.
- 这种方法为MET监测提供了一个具有成本效益和可访问的平台,消除了对复杂实验室基础设施的需求.
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