Application of Dispersive Liquid-Liquid Microextraction with Graphite Furnace Atomic Absorption Spectrometry for Determination of Trace Amounts of Zinc in Water Samples
Figure 5
Effect of the extraction time on the analytical responses, conditions: sample volume 5.0 mL containing 1.0 ng mL−1 Zn(II), dispersive solvent 1.0 mL ethanol, extraction solvent 200 μL CCl4 containing mol L−1.