Research Article
Solidified Floating Organic Drop Microextraction for the Detection of Trace Amount of Lead in Various Samples by Electrothermal Atomic Absorption Spectrometry
Figure 4
The effect of pH on the extraction of lead with SFODME. Extraction circumstances: Pb: 10 µgL−1; extraction solvent, 1-undecanol (100 µL); sample volume, 10 mL; dispersive solvent, acetonitrile (200 µL); % 1.6 NaCl; chelating reagent [PAN], 1 × 10−4 mol L−1.