Analysis of trace amounts of metal ions using silica-based chelating resins: A green analytical method

From: Critical Reviews in Analytical Chemistry | Date: January 1, 2003| Author: | Copyright information

ABSTRACT: This review is concerned mainly with the applications of chelating resins, based on silica gel, for the separation and preconcentration of trace metal ions from various substrates. General methods of preparations of silica-based resins have been discussed. A synthesis of various silica-based chelating resins and their applications in the extraction of trace amounts of metal ions have been reviewed critically and have also been reported in tabular form.

KEY WORDS: silica gel, chelating resin, separation, preconcentration, metal ions.

I. INTRODUCTION

An analysis of metal ions at trace ...

Related newspaper, magazine, and trade journal articles from HighBeam Research

(Including press releases, facts, information, and biographies)

Preparation and coordination with Hg(II) of sulfur- and 2-amino-pyridine-containing chelating resin.
; ...selective adsorption of chelating resins is found to be very...of mercury [1-9]. Chelating resins are usually used in...coordinating capabilities of chelating resins toward metal ions. The structures of functional groups in chelating resins are the most ...
Synthesis and adsorption properties of macroporous cross-linked polystyrene that contains an immobilizing 2,5-dimercapto-1,3,4-thiodiazole with tetraethylene glycol spacers.
; ...is an occurring toxic metal in natural ecosystems...selective adsorption of chelating resins is found to be very effective...removal of mercury [1-9]. Chelating resins are usually used in the...and hydrometallurgy of metal [10-15]. There are many...coordinating capabilities with ...
Kinetic analysis of a photosensitive chelator and its complex with Zn(II)
; ...reversible sequestration and release of metal ions is an important objective in biological...namely, that it binds to divalent metal ions (because of their extreme biological importance) and that it binds metal ions in the dark so that light is used...
Filter removes contaminants from liquids and gases.
; ...exchange resin has been used to remove metal ions in exhaust water, but because it selectively...adsorbs and captures low concentrations of metal ions, this is not always sufficiently rigorous...capable of forming a chelate with heavy metal ions, have also been used to remove ...
SORPTION PROFILE AND THERMODYNAMIC CHARACTERISTICS OF NITROSONAPHTHOL FUNCTIONALIZED SORBENT FOR METAL ION ENRICHMENT
; ...ions on the sorption of metal ions has revealed that phosphate...Functionalized resins; Metal ions; Nitroso compounds. Analytical determination of metal ions at trace or subtrace...direct determination of metal ions using various instrumental...ion-exchange1-3 and ...
Fabrication of Metal-Selective Materials.(Tohoku National Industrial Research Institute)(Brief Article)
; ...effectively and selectively separating useful metal ions from low-grade ores, and industrial wastes...developed for the selective separation of metal ions, by combining organic polymers and chelating...that react specifically with targeted metal ions. With the ever expanding use of ...
Absorption behavior of metal ions on Chitin/cellulose composite fibers with chemical modification by EDTA
; ...absorptive ability of the fibers for metal ions is examined by measuring absorption...isotherms at different pHs. For some metal ions, the modified fibers show improved...can be used as an absorbent for metal ions [7] and dyes [5]. There are many...
Mechanism of Copper Mediated Triple Helix Formation at Neutral pH in Drosophila Satellite Repeats
; ...base triplets, stabilized by Cu^sup 2+^ metal ions in amounts mirroring in vivo concentrations...discussed. INTRODUCTION Various divalent metal ions are known to interact with nucleic acids...investigations underlined the important role of metal ions in various functions of DNA in ...
U. Brain Institute awarded grant
; ...Alzheimer's patients have higher levels of metal ions such as aluminum, copper and iron in...stress is often caused by high levels of metal ions in the body. We want to find a safe...therapy can be used to reduce amounts of metal ions in the brain. Past attempts at the therapy...
Neurodegenerative diseases and metal ions volume 1: metal ions in life sciences.(Heady metals)(Neurodegenerative Diseases and Metal Ions: Metal Ions in Life Sciences, vol. 1)(Book review)
; * Neurodegenerative diseases and metal ions volume 1: metal ions in life sciences A Sigel, H Sigel & RKO Sigel...copper-regulation network. Therefore, the links between metal ions and brain disease are diverse, complicated, and far...