Preconcentration Procedure using in Situ Solvent Formation Microextraction in the Presence of Ionic Liquid for brilliant Green Determination in by UV-Vis Spectrophotometery in Various Water Samples for Fish Farming

Mahdian, Elham; Dehghani Mohammad Abadi, Malihe

doi:10.22101/JRIFST.2016.09.17.522

Preconcentration Procedure using in Situ Solvent Formation Microextraction in the Presence of Ionic Liquid for brilliant Green Determination in by UV-Vis Spectrophotometery in Various Water Samples for Fish Farming

Document Type : Original Paper

Authors

¹ Department of Food Science and Technology, Quchan Branch, Islamic Azad University, Quchan, Iran

² Young Researchers and Elite Club, Quchan Branch, Islamic Azad University, Quchan, Iran

10.22101/JRIFST.2016.09.17.522

Abstract

In situ solvent formation microextraction (ISFME) as a green, simple and sensitive method has been proposed for preconcentration of trace quantities of hazardous brilliant green in aqueous samples containing very high salt concentrations by UV-Vis spectrophotometry. In this technique, the extraction phase is simultaneously formed in situ. A water-miscible ionic liquid (IL) ([Hmim][BF₄]), is first added to the sample, followed by addition of sodium hexafluorophosphate (NaPF₆, as an ion-pairing agent) to obtain the hydrophobic IL ([Hmim][PF₆]). As a result, a cloudy solution is formed due to the formation of hydrophobic IL ([Hmim][PF₆]). All the critical parameters affecting the analytical performance of the method were investigated. Under the optimized conditions, the enhancement factor was 70. The detection limit and precision (RSD) were 0.1 µg L⁻¹ and 3.3% (n=6) respectively. The applicability of the proposed method was evaluated by determination of trace amounts of brilliant green in various water samples for fish farming.

Keywords

References

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