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Fig. 1 | Journal of Analytical Science and Technology

Fig. 1

From: Determination of copper(II) by flame atomic absorption spectrometry after its perconcentration by a highly selective and environmentally friendly dispersive liquid–liquid microextraction technique

Fig. 1

The absorption spectra for a Cu-salophen complex and b salophen ligand. Conditions: a Cu(II) concentration, 5.0 × 10−5 M; salophen concentration, 2.5 × 10−4 M; solvent, water; pH = 2.0; b salophen concentration, 2.5 × 10−4 M; solvent, water; pH = 2.0

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