Hollow-Fibre-Supported Dispersive Liquid-Liquid Microextraction for Determination of Atrazine and Triclosan in Aqueous Samples

Figure 1

The effect of varying the volume of the extracting organic solvent on the extraction. Conditions: 1 mL of 5 µg/mL triclosan and atrazine aqueous sample volume, varying volumes of a 1 : 4 (v/v) chlorobenzene : ethyl acetate mixture with the extraction time of 20 minutes and with toluene as the acceptor solvent. The relative extraction was calculated as a ratio of the peak areas of the analyte to that of the internal standard multiplied by 100.