您好，欢迎访问中国农业科学院 机构知识库！

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

A rapid and solid sampling colorimetric sensor of Hg in food based on thermo-release coupled with Au nanozyme trap

文献类型： 外文期刊

作者： Chai, Weiwei 1 ; Liu, Tengpeng 1 ; Huang, Xudong 1 ; He, Qianli 1 ; Li, Xue 1 ; Liu, Jixin 1 ; Mao, Xuefei 1 ;

作者机构： 1.Chinese Acad Agr Sci, Inst Qual Stand & Testing Technol Agroprod, Beijing 100081, Peoples R China

2.Minist Agr & Rural Affairs, Key Lab Agrofood Safety & Qual, Beijing 100081, Peoples R China

3.Beijing Abil Technol Co Ltd, Beijing 100081, Peoples R China

4.Henan Univ Technol, Coll Biol Engn, Zhengzhou 450001, Peoples R China

关键词： Solid sampling colorimetry; Nanozyme-based colorimetry; Gas phase enrichment; Au nanozymes; Mercury; Food

期刊名称：FOOD CONTROL （ 影响因子：6.3； 五年影响因子：6.1 ）

ISSN： 0956-7135

年卷期： 2025 年 169 卷

页码：

收录情况： SCI

摘要： Considering complicated matrices, solid sampling analysis of heavy metals in food is almost impossible for ionic nanocolorimetric methods. Here, a novel approach is proposed to fulfill Hg analysis in solid sample based on Au nanozyme colorimetry following thermo-release (TR) and gas phase enrichment (GPE). Gold nanozyme was synthesized to both enable Hg trapping and nanozyme reaction. Furthermore, the presence of Hg-0 enhances the POD activity of Au nanozymes and thereby oxidizes TMB under H2O2, resulting in color change to blue. The method LOD370 for Hg reached 6 mu g/kg in 200 mg rice sample with a good linearity (R-2 > 0.995); the analysis time was less than 25 min excluding digestion or extraction. Mg2+, Fe3+, and Cr- interference was effectively eliminated via thermo-release, GPE and AuNPs amalgamation. It was for the first time rapid and colorimetric detection of Hg in solid sample was achieved for nanozyme, holding a great potential for visualized elemental detection in food.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：中国农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台