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一种简单和选择性的共振雷利散射方法,用于微量化物,使用金纳米团表面分子印记的聚烯烯胺探针

Ruitao Zhu^1,2,3, Zhiqiang Wang^1,2,3, Aihui Liang^1,2,3

¹Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guilin, 541004, China.

Analytical and bioanalytical chemistry

|November 9, 2024

概括

一个新的金纳米集团探测器 (AuNC@MIP) 能够对酸盐 (NO2-) 进行特定检测. 这种敏感的方法准确地测量食品和水样中的化物.

科学领域:

纳米材料科学科学纳米材料科学
分析化学分析化学
化学传感器化学传感器

背景情况:

化物 (NO2-) 是环境和食品安全的重要分析物.
开发选择性和敏感的酸盐检测方法至关重要.
分子印记聚合物为目标分析物识别提供高特异性.

研究的目的:

为了合成和表征一种新的金纳米集团表面分子印记的聚烯酸胺) 探针 (AuNC@MIP).
开发一种共振雷利散射 (RRS) 方法,用于敏感和特定的化物检测.
在现实世界样本矩阵中评估探测器的性能.

主要方法:

合成AuNC@MIP使用N-异甲胺,黄金纳米集群和酸作为模板.
通过光谱,XPS,TEM,TGA和泽塔电位分析进行表征.
使用RRS强度变化的370nm检测亚酸盐.

主要成果:

AuNC@MIP探测器在370 nm处呈现出明显的RRS峰值.
化物添加导致RRS强度下降,表明检测成功.
该方法表明酸盐的线性范围为0.125-1.50nmol/L,LOD为0.085nmol/L.
在食品和水样中实现了高回收 (96-107%) 和低RSD (1.1-8.0%).

结论:

开发的AuNC@MIP纳米探针对于特定而敏感的化物检测是有效的.
基于RRS的方法为复杂样本中酸盐分析提供了一个有希望的方法.
这项工作有助于食品和环境监测的化学传感技术的进步.

关键词:

黄金纳米集群黄金纳米集群亚酸盐是一种酸盐.共振雷利散射雷利散射表面分子印记的聚合物.

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