A Fluorimetric Method Based on an Imidazole Compound for Cu²⁺ Determination in Tap Water

Figure 2

UV absorption and emission spectra of the ligand in acetonitrile-water (1 : 1). Ligand concentrations are 2.6 × 10⁻⁵ M and 2.0 × 10⁻⁷ M for absorption and emission spectra, respectively. The excitation wavelength is 300 nm.