Ethyl salicylate and ethyl benzoate for vortex-assisted surfactant-enhanced emulsification microextraction of fungicides in water samples and analysis by high-performance liquid chromatography

Ethyl salicylate (EtSA) and ethyl benzoate (EtBZ) as alternative extraction solvents have been evaluated for vortex-assisted surfactant-enhanced emulsification microextraction (VASEME) of target fungicides (e.g. carbendazim, thiabendazole, and fuberidazole) before the high-performance liquid chromatographic analysis. Under optimum conditions, the preconcentration factors about 16-28 (18-33) and limits of detection in the range of 0.01-0.1 mu g/L were achieved for both extraction solvents. Good recoveries in the range of 76.2-118.4% (85.7-114.6%) with the acceptable relative standard deviation lower than 10.4 were obtained at the concentration evaluation of 20 mu g/L and 50 mu g/L each fungicide in different water sample matrices. As a result, the proposed extraction solvents can be used as an alternative to other related solvents like methyl salicylate (MeSA) and methyl benzoate (MeBZ) for the preconcentration of target fungicides.