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Updated: Jun 25, 2025

A Filter-based Surface Enhanced Raman Spectroscopic Assay for Rapid Detection of Chemical Contaminants
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通过绿茶修饰的银纳米结构在生牛奶中检测胺的基于一干扰的色度测量

Upama Das1, Rajib Biswas1, Nirmal Mazumder2

  • 1Applied Optics and Photonics Research Laboratory, Department of Physics, Tezpur University, Tezpur 784028, Assam, India.

ACS omega
|May 27, 2024
PubMed
概括

一种新的,简单的方法使用绿茶提取物和银纳米粒子检测牛奶中的胺. 这种色度测量技术具有高度灵敏性,提供了一种快速可靠的方法来识别这种常见的牛奶染剂.

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Effects of EDTA on End-Point Detection Methods01:18

Effects of EDTA on End-Point Detection Methods

Different methods, such as visual observance of metal-ion indicators, spectroscopic techniques, and potentiometric methods, can determine the endpoint of an EDTA titration.
In the visual method, metal-ion indicators (metallochromic dyes), which have distinct colors in their free and complex forms, are added to the mixture to signal the titration's end point. They form stable complexes with metal ions, but these complexes are weaker than the corresponding metal–EDTA complexes. As a...
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