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Updated: Sep 23, 2025

Accumulation and Analysis of Cuprous Ions in a Copper Sulfate Plating Solution
Published on: March 20, 2019
A Quinoxaline-Naphthaldehyde Conjugate for Colorimetric Determination of Copper Ion
Sutapa Sahu1, Yeasin Sikdar1,2, Riya Bag1
1Department of Chemistry, University of Calcutta, 92, A.P.C. Road, Kolkata 700009, India.
Abstract:
This work facilitates detection of bivalent copper ion by a simple Schiff base probe QNH based on a quinoxaline-naphthaldehyde framework. The detailed study in absorption spectroscopy and theoretical aspects and crystal study of the probe and probe-copper complex has been discussed. The detection limit of the probe in the presence of Cu2+ is 0.45 µM in HEPES-buffer/acetonitrile (3/7, v/v) medium for absorption study. The reversibility of the probe-copper complex has been investigated by EDTA. The selective visual detection of copper has been established also in gel form.
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