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Updated: Jul 4, 2025

Quantification of Metal Leaching in Immobilized Metal Affinity Chromatography
Published on: January 17, 2020
A selective colorimetric chemosensor for detecting Ni(II) in aqueous solutions based on
Hajer Hrichi1, Ali M Ali2, Nadia A A Elkanzi3,4
1Chemistry Department, College of Science, Jouf University, P.O. Box: 2014, Sakaka, Saudi Arabia. hahrichi@ju.edu.sa.
Abstract:
Among the toxic heavy metals, Ni(II) can cause a variety of side effects on human health, such as allergy, cardiovascular and kidney diseases, lung fibrosis, lung, and nasal cancer. It is therefore critical from a public health and environmental perspective to determine and monitor Ni(II) ions in drinking water, foods, and environmental samples. In this study, a novel selective chemosensor (4-[{[4-(3-Chlorophenyl)-1,3-Thiazol-2-yl]Hydrazono}Methyl]phenyl4-methylBenzene Sulfonate (CTHMBS) was developed for the colorimetric detection of Ni(II) in aqueous medium. The presence of Ni(II) led to a distinct naked-eye color change from yellow to reddish-brown in aqueous solution. To examine the binding mechanism of CTHMBS to Ni(II), UV-vis spectroscopy analysis and DFT calculations were conducted. The detection limit of CTHMBS for Ni(II) was 11.87 µM, and the sensing ability of CTHMBS for Ni(II) was successfully carried out in real water samples.
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