Application of Dispersive Liquid-Liquid Microextraction with Graphite Furnace Atomic Absorption Spectrometry for Determination of Trace Amounts of Zinc in Water Samples
Figure 2
The effect of ligand (PPT) concentration on the absorbance of the system, conditions: sample volume 5.0 mL containing 1.0 ng mL−1 of Zn(II), dispersive solvent 1 mL ethanol, extraction solvent 100 μL CCl4 containing PPT, extraction time 10 min.