Development of 2-acetylpyridine-4-phenyl-3-thiosemicarbazone functionalized polymeric resin for the preconcentration of metal ions prior to their ultratrace determinations by MIS-FAAS

Abstract

2-Acetylpyridine-4-phenyl-3-thiosemicarbazone (APPT) ligand was incorporated onto Amberlite XAD-2 resin through an azo spacer and characterized by FTIR spectroscopy, elemental analysis, TGA, and SEM analysis. , respectively, with a preconcentration factor of 500 for the 6 studied metal ions.The total saturation capacity of the resin was 0.36, 1.20, 1.50, 1.61, 1.07, and 0.71 mmol g −1 , respectively.

Spectrophotometric determination of iron species using ionic liquid ultrasound assisted dispersive liquid--liquid microextraction

“…4−6 Thus, there is a great demand for development of a simple, fast, and sensitive method for trace element determination of the most important iron species (Fe(II) and Fe(III)) in water samples. 7 Various techniques including capillary electrophoresis, 8 inductively coupled plasma mass spectrometry (ICP-MS), 9 inductively coupled plasma optical emission spectrometry (ICP-OES), 10 flame atomic absorption spectrometry * Correspondence: sdadfarnia@yazd.ac.ir (FAAS), 11 polarography, 12 voltametry, 13 chemiluminescence, 14 and spectrophotometry 15 have been used for the determination of iron. Among these methods, spectrophotometry has the advantages of simplicity, availability, versatility, speed, accuracy, precision, and cost-effectiveness, 16 but it lacks the required sensitivity for direct determination of trace concentrations.…”

“…Thus, for the determination of low amount of iron ions, a separation and preconcentration step is required. Different procedures, such as solid phase extraction, 11,17 stripping voltametry, 18 co-precipitation, 19 liquid-liquid extraction, 10,20,21 and cloud point extraction, 22,23 have been used for this purpose. Dispersive liquid-liquid microextraction (DLLME) based on injecting an appropriate mixture of extraction solvent and disperser solvent into aqueous sample solution by syringe was developed by Assadi et al 24 in 2006.…”