On-line separation of silver with the chelate-forming resin amberlite XAD-2-PAR prior to its determination by flame atomic absorption spectrometry

Brajter, Krystyna; Da̧bek-Złotorzyńska, Ewa

doi:10.1039/an9881301571

Cited by 31 publications

(12 citation statements)

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“…However, it lacks selectivity [20]. Amberlite XAD series resins have shown promise for designing chelating resins [21,22,23,24,25]. Either the adsorption of chelating ligands onto these matrices or the coupling of ligands with the polymer backbone through a spacer arm has been used to design such resins.…”

Section: Introductionmentioning

confidence: 99%

Quinoline-8-ol-immobilized Amberlite XAD-4: Synthesis, characterization, and uranyl ion uptake properties suitable for analytical applications

Gladis

Rao

2002

Anal Bioanal Chem

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Amberlite XAD-4 has been functionalized by coupling it with 5-aminoquinoline-8-ol after acetylation. The resulting resin has been characterized by elemental analysis and IR spectra and has been used for preconcentrating uranyl ions prior to its determination by spectrophotometry. The optimum pH value for quantitative sorption is 4-6, and desorption can be achieved by using 5 mL of 1 mol L(-1) HCl. The sorption capacity of the resin is 11.5 mmol g(-1). The effect of various cations and anions on the preconcentration of uranium in conjunction with the determination procedure has been studied and we have found that none of the ions interfere except thorium. The enrichment factor for preconcentration of uranium was found to be 200. Ten replicate determinations of 40 micro g of uranium present in 1 L of sample gave a mean absorbance of 0.185 with a relative standard deviation of 2.64%. The detection limit corresponding to three times the standard deviation of the bank was found to be 2 micro g L(-1). The validation of the developed preconcentration procedure was carried out by successfully analyzing standard marine sediment reference material. The uranyl content of sediment and soils is estimated by spectrophotometry after its preconcentration with the above chelating resin.

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Section: Introductionmentioning

confidence: 99%

Quinoline-8-ol-immobilized Amberlite XAD-4: Synthesis, characterization, and uranyl ion uptake properties suitable for analytical applications

Gladis

Rao

2002

Anal Bioanal Chem

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“…Metal ions can be removed by adsorption on solid carriers. There are nonspecific adsorbents, such as activated carbon, metal oxides, silica, and ion‐exchange resins,2–4 and specific ones that are considered among the most promising techniques 5–9. These specific sorbents consist of a ligand that can specifically interact with the metal ion and the carrier, which may be an inorganic material or polymer microbead.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Zn(II) by crosslinked acrylic copolymers with amine functional groups

Bârsănescu

Buhaceanu

Dulman

et al. 2004

J of Applied Polymer Sci

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Adsorption of Zn(II) ions from diluted aqueous solutions by the acrylic copolymer based on ethylacrylate : acrylonitrile : divinylbenzene matrix with different crosslinking degrees and ethylenediamine and triethylenetetramine functional groups was investigated. Adsorption experiments were carried out by batch method. The effects of the pH, initial concentration of zinc, time of contact, and the crosslinking degree of the copolymers were studied. On the basis of Langmuir and Freundlich isotherms, the parameters that characterize the adsorption were determined. The maximum Zn(II) retention capacity value (500 mg g Ϫ1 ) was obtained for the acrylic copolymer with 2% crosslinking degree and ethylenediamine, as functional groups.

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“…The preconcentration factor achieved with DHAQ-loaded silica gel is 15 to 25 times higher for Cu, Fe, and Co, and 2.5 times higher for Cu and Ni, than those of 3-hydroxy-2-methyl-1,4-naphthaquinone- [32] and xanthurenic acid- [14] loaded silica gel, respectively. For copper, however, Chelex-100, Chelamin, Cellex, and silica gel loaded with 1-(2-thialylazo)-2-naphthol have better sorption capacity [6,10,22,35] than the DHAQ-modified silica gel matrix. The capacity of 8-hydroxyquino- Table 6 Comparison of the developed chelating matrix with others reported in the literature Immobilized support Metal Sorption capacity (µmol g -1 ) Preconcentration factor line-loaded silica gel for copper is comparable with that of the DHAQ-modified matrix.…”

Section: Determination Of Cobalt In a Pharmaceutical Samplementioning

confidence: 99%

“…There is current interest in the development of new solid-phase collectors of high sorption capacity, selectivity (low matrix effect), and preconcentration factor because they are more eco-friendly and easier to reuse. Immobilization of ligands on polymeric matrices such as cellulose [2], resins of the Amberlite XAD series and Amberlyst A-26 [3,4,5,6,7,8], silica gel [9,10,11,12,13,14,15,16,17,18,19,20,21], and polystyrene [23,24,25] has recently been used to design chelating matrices. Silica gel functionalized with organic molecules have higher sorption capacity than organic polymer-based resins.…”

Section: Introductionmentioning

confidence: 99%

Enrichment of iron(III), cobalt(II), nickel(II), and copper(II) by solid-phase extraction with 1,8-dihydroxyanthraquinone anchored to silica gel before their determination by flame atomic absorption spectrometry

Goswami

Singh

2002

Analytical and Bioanalytical Chemistry

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A chelating matrix prepared by immobilizing 1,8-dihydroxyanthraquinone on silica gel modified with 3-aminopropyltriethoxysilane has been characterized by use of cross-polarization magic angle spinning (CPMAS) NMR, diffuse reflectance infrared Fourier transformation (DRIFT) spectroscopy, and thermogravimetric analysis and used to preconcentrate Fe(III), Co(II), Ni(II), and Cu(II) before their determination by flame atomic absorption spectrometry. The optimum pH ranges for quantitative sorption are 6.5-8.0, 6.0-7.0, 6.0-8.0, and 7.0-8.5 for Cu, Fe, Co, and Ni, respectively. All the metal ions can be desorbed with 2 mol L(-1) HCl or HNO3. The sorption capacity ( micromol g(-1) matrix) and preconcentration factor were 226.6, 250; 365.6, 300; 101.8, 150; and 109.0, 250 for Cu, Fe, Co, and Ni, respectively. The lowest concentration for quantitative recovery was 4.0, 3.3, 6.6, and 4.0 ng mL(-1), respectively for the four metal ions. The limits up to which electrolytes NaNO3, NaCl, NaBr, Na2SO4, and Na3PO4 and cations Ca(II) and Mg(II) can coexist with the four metal ions during their sorption without adverse effect are reported. The simultaneous enrichment and determination of all the four metals is possible if the total load of metal ions is less than the sorption capacity. Flame AAS was used to determine the metal ions in underground, tap, and river water samples (RSD

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On-line separation of silver with the chelate-forming resin amberlite XAD-2-PAR prior to its determination by flame atomic absorption spectrometry

Cited by 31 publications

References 0 publications

Quinoline-8-ol-immobilized Amberlite XAD-4: Synthesis, characterization, and uranyl ion uptake properties suitable for analytical applications

Quinoline-8-ol-immobilized Amberlite XAD-4: Synthesis, characterization, and uranyl ion uptake properties suitable for analytical applications

Adsorption of Zn(II) by crosslinked acrylic copolymers with amine functional groups

Enrichment of iron(III), cobalt(II), nickel(II), and copper(II) by solid-phase extraction with 1,8-dihydroxyanthraquinone anchored to silica gel before their determination by flame atomic absorption spectrometry

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