Chelating Resins and Their Applications in the Analysis of Trace Metal Ions

Preconcentration of Mercury Using Duolite GT-73 in the Analysis of Water Samples by Inductively Coupled Plasma Atomic Emission Spectrometry

“…2,3 Column ion chromatography based on the use of different ion exchange or chelating resins has been considered to be one of the most attractive and effective manners of increasing the sensitivity of spectrometric measurements. 1,2,4 In the case of the mercury determinations, usually off-line column procedures [5][6][7][8] have been used more extensively taking advantage of the excellent sorption properties of different solid sorbents with the introduced functional groups containing donor sulfur or nitrogen atoms. On-line flow-injection approaches 9-12 using packed mini-columns with different adsorption or ion-exchange media have also been employed, offering automated sample management for analyte preconcentration and separation as well as prevention from contamination of the laboratory environment.…”

Applications of Amberlite XAD based Chelating resins in Online Pre concentration of metal ions

“…There are different techniques for preconcentration such as co precipitation [1], electrode deposition, liquid-liquid extraction [2], freezing based concentration method, carbon adsorption, distillation, sublimation, evaporation, membrane filtration [3], cloud point extraction [4] and solid phase extractor (SPE) like chelating resins have been used [5]. Solid phase extraction (SPE) is one of the pre-treatment methods for the preconcentration of trace analytes from a sample.…”

Efficient FeCl3/SiO2 as heterogeneous nanocatalysis for the synthesis of benzimidazoles under mild conditions

“…Amongst various solid supports, Nano silica is usually preferred, since it exhibits many useful properties such as high surface area, excellent stability (thermal and chemical), and good availability. Besides, organic groups can be robustly anchored to the surface to provide catalytic centers [4,6,19]. Benzimidazole nucleus is an important intermediate with its good biological and pharmacological properties in the organic synthesis [1].…”