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Fig. 8 | Journal of Analytical Science and Technology

Fig. 8

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. 8

Effect of extraction time on the extraction of Cu(II) ions by DLLME method. Conditions: sample volume, 10.0 mL; Cu(II), 50.0 μg L−1; salophen concentration, 2.0 × 10−5 M; extraction solvent (chloroform) volume, 120 μL; disperser solvent (acetone) volume, 1.68 mL; diluting solvent (ethanol) volume, 130 μL; centrifuge time, 5 min (at 5000 rpm)

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