Research Article
Solidified Floating Organic Drop Microextraction for the Detection of Trace Amount of Lead in Various Samples by Electrothermal Atomic Absorption Spectrometry
Figure 5
The effect of 1-(2-pyridylazo)-2-naphthol concentration on absorbance of lead with SFODME. Extraction circumstances: Pb: 10 µgL−1; pH: 9; extraction solvent, 1-undecanol (100 µL); sample volume, 10 mL; dispersive solvent, acetonitrile (200 µL); chelating reagent [PAN], 1 × 10−4 mol L−1.