A new chelating resin: Synthesis, characterization and application for speciation of chromium (III)/(VI) species

Speciation of Chromium in Water Samples by Solid-Phase Extraction on a New Synthesized Adsorbent

“…Thus, Cr(III) could be oxidized with a suitable oxidizing agent; this method would enable the determination of total Cr by the retention of the original and oxidized Cr(VI) species on the resin. [22][23][24][25] In this study, a newly synthesized resin, poly(1,3-thiazol-2yl-methacrylamide-co-4-vinyl pyridine-co-divinyl benzene), was used for the speciation of Cr(VI) and Cr(III). The Cr(VI) was separated from Cr(III) and preconcentrated by using a column packed with this resin.…”

Recovery and Separation of Metal Ions from Aqueous Solutions by Solvent‐Impregnated Resins

“…The synthesis procedure for chelating resins is complicated and the separation capability may decline as the extraction functional groups are bound to the resins [14]. On the contrary, the preparation of extraction resins is relatively simple and their operation mode is similar to that of IX resins.…”

Multiple response optimization of sequential speciation of chromium in water samples by in situ solvent formation dispersive liquid–liquid microextraction prior to electrothermal atomic absorption spectrometry determination

“…Due to the low concentration of analyte and matrix effects, especially for quantitative determination in the saline samples, often a suitable sample pretreatment step is required. Various techniques for Cr separation and preconcentration have been proposed, including ion exchange [8], adsorption [9], coprecipitation [10], cloud point extraction (CPE) [11], and liquid-liquid extraction (LLE) [12]. Liquid-phase microextraction (LPME) [13], and dispersive liquid-liquid microextraction (DLLME) [14,15] are promising miniaturized preconcentration techniques which have attracted considerable attention for simplicity, low cost, fast extraction speed and high preconcentration factors.…”