Journal ArticleDOI
New chelating sorbents for noble metals.
TLDR
The properties of the new ehelate-forming "POLYORGS" sorbents for concentration of noble metals are discussed and some methods of noble metal determination after preliminary concentration of POLyORGS sorbent are given.About:
This article is published in Talanta.The article was published on 1985-12-01. It has received 68 citations till now. The article focuses on the topics: Noble metal & Divinylbenzene.read more
Citations
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Chemical modification of silica surface by immobilization of functional groups for extractive concentration of metal ions.
TL;DR: Increased utilization of mechanically stable synthetic matrices particularly silica gel as a solid support and its surface modification by impregnation of organic ligands directly or covalent grafting through spacer unit for extractive concentration of trace elements are highlighted in the present article.
Journal ArticleDOI
Chelating polymers and related supports for separation and preconcentration of trace metals.
TL;DR: This review is concerned mainly with the applications of chelating polymeric resins for the separation and concentration of trace metals from oceans, rivers, streams and other natural systems.
Journal ArticleDOI
Removal of cr(vi) from alkaline aqueous solutions using chemically modified magnetic chitosan resins
TL;DR: Chitosan was crosslinked using glutaraldehyde in the presence of magnetite, and the resin obtained was chemically modified through the reaction with tetraethylenepentamine followed by glycidyl trimethylammonium chlorid to produce chitosans bearing amine (R1) and quaternary ammonium chloride moieties (R2), respectively as discussed by the authors.
Journal ArticleDOI
Use of an o-aminobenzoic acid-functionalized XAD-4 copolymer resin for the separation and preconcentration of heavy metal(II) ions
TL;DR: In this article, the azo-linkage method was used for the pre-concentration of copolymer resins with heavy metal ion-selective ligands.
Journal ArticleDOI
Extraction and separation studies of silver(I) and copper(II) from their aqueous solution using chemically modified melamine resins
TL;DR: In this article, two modified melamine resins have been prepared and investigated, the modification process took place through the treatment with thiourea to produce R1 or tetraoxalyl ethylenediamine (TELEN) to create R2.
References
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Journal ArticleDOI
Separation of noble metals from base metals by means of a new chelating resin.
G. Koster,G. Schmuckler +1 more
TL;DR: A new type of chelating resin, which is highly selective for gold and the platinum metals, is described and its properties and applications are indicated.
Journal ArticleDOI
Determination of the noble metals in geological materials by neutron activation analysis
R. A. Nadkarni,G. H. Morrison +1 more
TL;DR: Gold, ruthenium, palladium, osmium, iridium, and platinum were determined in geological materials using thermal neutron irradiation, selective adsorption of the noble metal group on Srafion NMRR ion exchange resin, and high-resolution gamma spectrometry as mentioned in this paper.
Journal ArticleDOI
Chelating ion-exchangers containing n-substituted hydroxylamine functional groups: Part 6. Sorption and separation of gold and silver by a polyhydroxamic acid
F. Vernon,Wan Md. Zin +1 more
TL;DR: In this paper, the sorption and desorption characteristics of gold and silver on polyhydroxamic acid chelating resin are described, and gold is quantitatively sorbed from 0.5 M nitric acid or neutral solutions, and readily eluted with 0. 5% ( w v ) potassium cyanide solution.
Journal ArticleDOI
Formazane als funktionelle Gruppen chelatbildender Ionenaustauscher. I
M. Grote,A. Kettrup +1 more
TL;DR: In this paper, die Darstellung substituierter Formazane und ihre chemische fixierung an Cellulose, amino-and chlormethyliertem Polystyrol wird beschrieben.
Journal ArticleDOI
Separation of palladium(II) and platinum(II) chlorides by means of a guanidine resin
TL;DR: In this paper, the preparation and properties of a weakly basic ion-exchanger with suilonylguanidine as active groups are described, and a new, weakly-basic ion exchange system is proposed.
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Separation of noble metals from base metals by means of a new chelating resin.
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