Synthesis and characterization of a magnetic nanomaterial and its use in the spectroscopic determination of the dye indigo carmine using switchable hydrophilic solvent liquid-liquid microextraction
The current study combined switchable-hydrophilicity solvent based liquid–liquid microextraction (SHS-LLME) with magnetic solid phase extraction (MSPE) in two steps to extract and quantify the dye indigo carmine. First, this procedure extracts indigo carmine (IC) using dipropylamine as the extraction solvent. Then, magnetic nanoparticles Fe3O4 modified with cetyltrimethylammonium bromide (CTAB) are used. Significant hydrophobicity as an adsorbent and the extent of its effect on the extraction rate of indigo carmine dye was examined and improved. The basic parameters that affect the effectiveness of (SHS-LLME), MSPE, and signal improvement techniques were discussed and improved. The approach was used in a range of (5-60)µg.mL-1 under critical circumstances, with a correlation coefficient (R2) 0.999. the detection limit was found to be 0.0156 μg.m L-1.