A method for the rapid detection of heavy metal mercury ions based on a novel mercury chelator N,N'-bis (2-mercaptoethyl) isophthalamide

IF 9.8 1区农林科学 Q1 CHEMISTRY, APPLIED

Food Chemistry Pub Date : 2024-12-16 DOI:10.1016/j.foodchem.2024.142486

Yali Wang, Shuangbo Zhang, Jiang Bian, Joseph Brake, Chaoyang Luo, Chuanwen Sun, Xiaobin Wu

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Abstract

Mercury has caused severe harm to the environment and human health. A novel biological screen method was developed and identified a Hg²⁺ chelator BDTH2. Both biological and chemical methods demonstrated BDTH2 displayed a high specificity and strong binding capacity for Hg²⁺. Toxicological experiments of BDTH2 demonstrated its good safety. To enhance the sensitivity, functional composite BDTH2-AuNPs were synthesized, and the system exhibited strong specificity to Hg²⁺ and excellent anti-interference capabilities. The optimized colorimetric method and the paper test strip method showed a visual detection limit of 3 nM less than 30 s and 5 nM within 1 min respectively. This system was evaluated for detecting spiked Hg²⁺ concentrations in environmental water and six agricultural food samples and showed high consistence with those of ICP-MS. Therefore, this study provides a novel, rapid, and economical method for on-site detecting of Hg²⁺ in water and agricultural products.

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基于新型汞螯合剂N，N′-双（2-巯基乙基）异苯酞胺的重金属汞离子快速检测方法

汞对环境和人类健康造成严重危害。建立了一种新的生物筛选方法，鉴定了Hg2+螯合剂BDTH2。生物和化学方法均表明BDTH2对Hg2+具有高特异性和强结合能力。毒理学实验表明，BDTH2具有良好的安全性。为了提高灵敏度，我们合成了功能复合物BDTH2-AuNPs，该体系对Hg2+具有较强的特异性和优异的抗干扰能力。优化后的比色法和试纸条法的视觉检出限分别为3 nM≤30 s和5 nM≤1 min。该系统对环境水和6种农业食品样品中Hg2+的检测结果进行了评价，结果与ICP-MS检测结果高度一致。因此，本研究为水和农产品中Hg2+的现场检测提供了一种新颖、快速、经济的方法。

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来源期刊

Food Chemistry 工程技术-食品科技

CiteScore

16.30

自引率

10.20%

发文量

3130

审稿时长

122 days

期刊介绍： Food Chemistry publishes original research papers dealing with the advancement of the chemistry and biochemistry of foods or the analytical methods/ approach used. All papers should focus on the novelty of the research carried out.