Preconcentration and Determination of Chromium Species Using Octadecyl Silica Membrane Disks and Flame Atomic Absorption Spectrometry

Extraction of Zn(II) Using Magnetic Chitosan Nanoparticles Grafted with B-cyclodextrin and Determination by FAAS

“…Sorption of Zn(II) by some sulfur containing complexing agents loaded on various solid supports [24] was also reported. 2-Amino-1-cyclopentene-1-dithiocaboxylic acid (ACDA) for the extraction of silver(I), Co(II) and palladium(II) 25 , 2-[2-triethoxysilyl-ethylthio] aniline for the selective extraction and separation of palladium from other interfering metal ions 26 as well as thiosemicarbazide for sorption of different metal ions 27 and thioanilide loaded on silica gel for preconcentration of palladium(II) from water 28,29 are also sulfur contaning silica gel phases.…”

Selective Pre‐concentration and Solid Phase Extraction of Mercury(II) from Natural Water by Silica Gel‐loaded (E)‐N‐(1‐Thien‐2′‐ylethylidene)‐1,2‐phenylenediamine Phase

“…[14][15][16][17][18] The most successful selective solid phases for soft metal ions are sulfur-containing compounds, which are widely used in different analytical fields. Amongst these sulfur-containing compounds are dithiocarbamate deriva-tives for selective extraction of mercury(II) 19,20 and pre-concentration of various cations 21,[23][24][25][26] and 2-mercaptobenzothiazole-modified silica gel for on-line preconcentration and separation of silver for atomic absorption spectrometric determinations. 22 Ammonium hexa-hydroazepine-1-dithiocarboxylate (HMDC)-loaded on silica gel as solid phase pre-concentration column for atomic absorption spectrometry (AAS) and inductively coupled plasma atomic emission spectrometry (ICP-AES) was reported.…”

“…23 Sorption of copper(II) by some sulfur containing complexing agents loaded on various solid supports 24 was also reported. 2-Aminocyclopentene-1-dithiocaboxylic acid (ACDA) for the extraction of silver(I), mercury(II) and palladium(II), 25 2-(2-triethoxysilylethylthio)aniline for the selective extraction and separation of palladium from other interfering metal ions, 26 thiosemicarbazide for sorption of different metal ions 27 and thioanilide loaded on silica gel for pre-concentration of palladium(II) from water 28 are also sulfur contaning silica gel phases.…”

Solid Phase Extraction of Trace Copper(II) Using Octadecyl Silica Membrane Disks Modified with N,N′‐Disalicylideneethylenediamine

“…Nevertheless, several other techniques for the preconcentration and separation of copper have been proposed, including liquid chromatography, 22 supercritical fluid extraction, 23 flotation, 24 aggregate film formation, 25 liquid membrane, 26 column adsorption of pyrocatechol violet-copper complexes on activated carbon, 27 ion pairing, 8,29 preconcentration with yeast, 30 and solid phase extraction (SPE) using C 18 cartridges and disks. [31][32][33]56 Solid phase extractions or liquid-solid extractions are popular and growing techniques that are used to sample preparation for analysis. They are an attractive alternative for classical liquid-liquid extraction methods that reduce solvent usage and exposure, disposal costs and extraction time for sample separation and concentration purposed.…”