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Shedding Light on Heavy Metal Contamination: Fluorescein-Based Chemosensor for Selective Detection of Hg2+ in Water.

ABSTRACT: This article discusses the design and analysis of a new chemical chemosensor for detecting mercury(II) ions. The chemosensor is a hydrazone made from 4-methylthiazole-5-carbaldehyde and fluorescein hydrazide. The structure of the chemosensor was confirmed using various methods, including nuclear magnetic resonance spectroscopy, infrared spectroscopy with Fourier transformation, mass spectroscopy, and quantum chemical calculations. The sensor's ability in the highly selective and sensitive discovery of Hg2+ ions in water was demonstrated. The detection limit for mercury(II) ions was determined to be 0.23 µM. The new chemosensor was also used to detect Hg2+ ions in real samples and living cells using fluorescence spectroscopy. Chemosensor 1 and its complex with Hg2+ demonstrate a significant tendency to enter and accumulate in cells even at very low concentrations.

SUBMITTER: Zavalishin MN 

PROVIDER: S-EPMC10970617 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature

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Shedding Light on Heavy Metal Contamination: Fluorescein-Based Chemosensor for Selective Detection of Hg<sup>2+</sup> in Water.

Zavalishin Maksim N MN   Kiselev Alexey N AN   Isagulieva Alexandra K AK   Shibaeva Anna V AV   Kuzmin Vladimir A VA   Morozov Vladimir N VN   Zevakin Eugene A EA   Petrova Ulyana A UA   Knyazeva Alina A AA   Eroshin Alexey V AV   Zhabanov Yuriy A YA   Gamov George A GA  

International journal of molecular sciences 20240310 6

This article discusses the design and analysis of a new chemical chemosensor for detecting mercury(II) ions. The chemosensor is a hydrazone made from 4-methylthiazole-5-carbaldehyde and fluorescein hydrazide. The structure of the chemosensor was confirmed using various methods, including nuclear magnetic resonance spectroscopy, infrared spectroscopy with Fourier transformation, mass spectroscopy, and quantum chemical calculations. The sensor's ability in the highly selective and sensitive discov  ...[more]

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