Sorption of arsenic, antimony and bismuth on glycolmethacrylate gels with bound thiol groups for direct sampling in electrothermal atomic absorption spectrometry

Metal ion extraction with a thiol hydrophilic resin

“…Modified radioimmunoassay (RIA) procedures have been employed for the various routine clinical and research determinations (7-9) of 3,5diiodothyronine (T2), 3,5,3'-triiodothyronine (T3), and 3,5,3',5'-tetraiodothyronine (T4). There has been activity in recent years in the development of high-performance liquid chromatography (HPLC) and gas chromatography (GC) procedures for iodoamino acid and hormonal iodine determinations in water, serum, thyroid tissue, and thyroglobulin (10)(11)(12)(13)(14)(15)(16)(17).…”

“…The sulfur-containing chemical groups act as selective ligands with a high bond stability for transition-metal ions (2). Several papers (3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14) describe the immobilization of thiolcontaining groups on various more or less hydrophobic matrices, particularly styrene-divinylbenzene copolymers (3)(4)(5)(6)(7)(8) or polymethacrylate resins (3,(9)(10)(11).…”

Experimental and DFT studies for selective separation of Sb(iii) and Sb(v) from mixtures with Zr(iv)/Co(ii) using thiourea grafted polystyrene adsorbent

“…Hence, taking advantage of this weak acidity of antimony, sulfur in thioether and thiols as so base, is considered as the best choice for the donor atom. The S-containing organics, [15][16][17][18] mainly thiourea, have been reported for antimony complexation [19][20][21][22][23] and also as antimony eluting agent from ion exchange columns. 7,24 In addition, thiourea immobilized as thiol and isothiouronium resins have also been reported for selective removal of heavier transition metals.…”

Determination of Tin by Resin-Suspension Electrothermal Atomic Absorption Spectrometry after Enrichment as the Complex with Ammonium Pyrrolidinedithiocarbamate

“…Solid analysis by ETAAS, in which a solid sample is placed directly in a furnace or a sample prepared as a slurry or a suspension is injected to a furnace, has been widely used, as summarized in the monograph 1 and the reviews. 2,3 The methods have substantially been applied for the determination of trace elements in solid samples, such as soil, sediment and sludge, however, they have also been applied to water samples after preconcentration of the desired trace element in the precipitate 4,5 or on fine particles such as chelating resins, [6][7][8] activated carbon, 9,10 ion-exchange resins, [11][12][13][14][15] and cobalt(III) oxide. 16,17 So far, a solid sampling procedure was applied to the determination of tin in natural water, 5 in which the tin was preconcentrated by coprecipitation with a Ni-APDC complex and a part of the precipitate was packed in a miniature cup for ETAAS analysis.…”