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通过SP-ICP-MS和补充技术,通过酸覆盖的金纳米颗粒感知Pb2+的机械洞察力

Atitaya Suratsawadee¹, Jitapa Sumranjit², Atitaya Siripinyanond¹

¹Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand.

Analytica chimica acta

|March 9, 2026

概括

这项研究提出了一种新的方法,用于检测水中的 (Pb2+) 使用加酸覆盖的金纳米粒子 (GA-AuNPs). 在的存在下,GA-AuNP会改变颜色,从而实现简单而敏感的环境监测.

科学领域:

环境科学环境科学
纳米技术纳米技术
分析化学分析化学

背景情况:

水中的 (Pb2+) 污染对环境和公共卫生构成重大风险.
开发灵敏,简单和可在现场部署的检测方法至关重要.
用酸覆盖的金纳米粒子 (GA-AuNPs) 显示了对金属离子的色度检测的潜力.

研究的目的:

开发一种灵敏且具有成本效益的色度传感器,用于 (Pb2+) 检测.
阐明GA-AuNPs在响应Pb2+时的感知机制.
用补充分析技术验证传感器的性能.

主要方法:

用酸覆盖的黄金纳米粒子 (GA-AuNPs) 的一合成.
使用UV-Vis光谱和视觉观测进行色度检测.
使用SP-ICP-MS,FlFFF-ICP-MS,XPS和TEM进行纳米粒子聚合和相互作用的表征.

主要成果:

实现了0.62μg L-1的检测极限,用于Pb2+与明显的颜色变化.
观察到GA-AuNP的Pb²⁺诱导的聚合,通过粒子大小和数量度变化得到证实.
在纳米粒子表面确认了离子和酸之间的特定O-Pb协调.

结论:

开发了一种使用GA-AuNPs进行Pb²⁺检测的简单,具有成本效益和敏感的色度测量方法.
提供了对由O-Pb协调驱动的Pb²⁺诱导的聚合途径的机制性见解.
对于金属-合物-纳米粒子相互作用的高级理解,用于环境监测中的合理传感器设计.

关键词:

颜值测量传感器的颜色测量传感器黄金纳米颗粒的使用方法领先的检测探测器一个粒子ICP-MSMS的单个粒子

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