Related Experiment Video
Updated: Dec 9, 2025

Accumulation and Analysis of Cuprous Ions in a Copper Sulfate Plating Solution
Published on: March 20, 2019
Detection of Copper(II) in Water by Methylene Blue Derivatives
Carlo Ciarrocchi1, Adriana Tumino1, Donatella Sacchi1
1Department of Chemistry, University of Pavia, V. Taramelli 12, 27100, Pavia, Italy.
Abstract:
Two novel phenothiazin-5-ium derivatives bearing cyclam moieties (3 a+ and 3 b+ ) were synthesized and investigated as Cu2+ sensors. Both ligands show intense spectral changes in the presence of Cu2+ in aqueous solutions. The high molar extinction coefficient of the chromophore allows both naked eye detection and spectrophotometric quantitative determination of the cation at a micromolar-concentration scale. 3 a+ was found to outperform 3 b+ , showing negligible spectral changes in the presence of excesses of other metal cations.
More Related Videos
12:50Colorimetric Paper-based Detection of Escherichia coli, Salmonella spp., and Listeria monocytogenes from Large Volumes of Agricultural Water
Published on: June 9, 2014
11:38Quantifying the Binding Interactions Between CuII and Peptide Residues in the Presence and Absence of Chromophores
Published on: April 5, 2022
Related Concept Videos
Effects of EDTA on End-Point Detection Methods
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...
Precipitation Titration: Endpoint Detection Methods
In the Volhard method, a standard excess of AgNO3 is first added to the...
Extraction: Advanced Methods
Complexometric Titration: Overview
Precipitation and Co-precipitation
Electrodeposition
Electrodeposition can...