Adsorption of Metallic Cations on Silica Gel-Immobilized 8-Hydroxyquinoline

Bernal, Juan Pablo; Miguel, Eduardo Rodríguez de San; Aguilar, Julio César; Salazar, G.; Gyves, Josefina de

doi:10.1081/ss-100100247

Cited by 25 publications

(18 citation statements)

References 14 publications

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“…Furthermore, it reduces consumption of and exposure to solvent and disposal costs. A number of different solid sorbents such as naphthalene [3,4,5], cellulose [6], C 18 -bonded silica membrane discs [7], silica gel [8,9], glass beads [10,11,12], silica frit [13], metal hydroxides [14], activated carbon [15,16] and polymer supports [17,18] have been investigated for the preconcentration of trace metals.…”

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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“…After dried at 80°C under vacuum for 24 h, the final product of KIT-6-quinoline-8-ol was obtained [34]. Additionally, KIT-6-quinaldine-8-ol was prepared via the same method (see Fig.…”

Section: Synthesis Of Sorbents Materialsmentioning

confidence: 99%

Mesoporous silica (KIT-6) derivatized with hydroxyquinoline functionalities as a selective adsorbent of uranium(VI)

Zhu

Shi

Song

et al. 2015

J Radioanal Nucl Chem

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Two modified mesoporous silica (KIT-6) materials for absorbing uranium(VI) were prepared respectively via post-grafting of 8-hydroxyquinoline and 8-hydroxyquinoline onto surface of KIT-6, which were characterized by FT-IR, NMR, TEM, and sorption/desorption analysis. Effect of pH values, contact time, ionic strength, solid-liquid ratio, temperature, and coexisting ions on sorption behavior of the modified KIT-6 were also investigated. Typical sorption isotherms (Langmuir and Freundlich) were used to determine the sorption process and the maximum U(VI) sorption capacity. The results indicate that the two modified KIT-6 exhibit better selective sorption of U(VI) as compared to the original KIT-6.

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“…Two methodologies were commonly practiced for solid phase extraction of lead. One was based on chemical reactions either for synthesis of a selective ligand [14] or its covalent coupling to support material [12,15,16] and other for functionalization of the solid support itself [10][11][12][13]17]. These methods were somewhat lengthy and time-consuming.…”

Section: Introductionmentioning

confidence: 99%

“…Solid phase extraction procedures for lead have been reported using various solid supports such as activated carbon [9], silica gel [10], cellulose [11], Amberlite XAD series resins [12][13][14][15][16][17], Chromosorb resin [18], Ambersorb resin [19] and polyurethane foam [20]. Two methodologies were commonly practiced for solid phase extraction of lead.…”

Section: Introductionmentioning

confidence: 99%

Solid phase extraction of lead on octadecyl bonded silica membrane disk modified with Cyanex302 and determination by flame atomic absorption spectrometry

Karve

Rajgor

2007

Journal of Hazardous Materials

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Adsorption of Metallic Cations on Silica Gel-Immobilized 8-Hydroxyquinoline

Cited by 25 publications

References 14 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

Mesoporous silica (KIT-6) derivatized with hydroxyquinoline functionalities as a selective adsorbent of uranium(VI)

Solid phase extraction of lead on octadecyl bonded silica membrane disk modified with Cyanex302 and determination by flame atomic absorption spectrometry

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