Research Article
Detection of Polycyclic Aromatic Hydrocarbons in Water Samples by Annular Platform-Supported Ionic Liquid-Based Headspace Liquid-Phase Microextraction
Figure 6
The effect of NaCl% on EFs. Other extraction conditions: 10 mL of aqueous standards (containing PAHs at a concentration of 5 μg·L−1); extraction temperature, 50°C; extraction solvent volume, 50 μL; extraction time, 30 min. Values are mean of n = 3 replicates.