A Novel Cationic Surfactant-Assisted Switchable Solvent-Based Dispersive Liquid-Liquid Microextraction for Determination for Orange II in Food Samples

作者：Hamid Yahya; Fat'hi Mohammad Reza^*

来源：Food Analytical Methods, 2018, 11(8): 2131-2140.

DOI：10.1007/s12161-018-1186-1

• Orange II
• Switchable solvent
• Cationic surfactant
• Aliquat 336
• Dispersive liquid-liquid microextraction
• UV-vis spectrophotometry

In this research, a new and green procedure based on the cationic surfactant-assisted switchable solvent-based dispersive liquid-liquid microextraction (CS-SS-DLLME) with UV-vis spectrophotometry was used for the extraction and determination of the Orange II dye in food samples. The main feature of the switchable solvent is the simple and reversible conversion of polarity protonated triethylammonium carbonate (P-TEA-C, ionic) to triethylamine (TEA, nonionic) by adding NaOH. This extraction method is based on hydrophilicity switchable solvent and ion pair effect of cationic surfactant. Simplicity, high-performance extraction, rapidity of the process, increase of stability, and reduction of the extractive phase volatility are other advantages of the proposed method. The parameters including the extraction and preconcentration of Orange II were studied and optimized. Under optimal conditions, the calibration curve was linear within the range of 2-450 mu g/L and the detection limit was 0.9 mu g/L and the relative standard deviation (RSD) for 80 mu g/L of Orange II was 1.68%. This developed method was used successfully for the determination of Orange II in food samples.

• 出版日期2018-8