Fig. 4From: Ion-association dispersive liquid–liquid microextraction of ultra-trace amount of gold in water samples using Aliquat 336 prior to inductively coupled plasma atomic emission spectrometry determinationThe effect of salt concentration on extracted Au(III) signals. Extraction conditions: sample solution, 10 mL of gold (200 μg L−1); extraction solvent, 350 μL 1-octanol containing Aliquat 336 (5% w/v); HCl concentration (2 mol L−1); disperser solvent 1.5 mL acetonitrileBack to article page