Ion exchange in analytical chemistry

Walton, Harold F.

doi:10.1021/ed042p111

Cited by 83 publications

(19 citation statements)

References 2 publications

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“…The world health organization (WHO) recommended a maximum acceptable concentration of copper in drinking water to be 1.5mg/l [6]. Conventional metal removal techniques such as reverse osmosis, solvent extraction, lime coagulation and ion exchange methods [7], [8] are encountered with certain major disadvantages such as high energy requirements, incomplete removal and generation of large quantity of toxic waste sludge due to various reagents used in a series of treatments. Adsorption techniques are proved to be an effective and attractive process for removal of non-biodegradable pollutants [9], [10] from wastewater.…”

Section: Introductionmentioning

confidence: 99%

Equilibrium and Kinetics Studies of adsorption of Copper (II) Ions on Natural Biosorbent

Farouq¹,

Yousef²

2015

IJCEA

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Abstract-The Biosorption of Copper (II) ions from aqueous solution on natural biosorbent (Mussels) has been investigated. Batch shaking adsorption experiments were performed and equilibrium and kinetic isotherms were tested. Results show that Chitin can remove Copper (II) effectively from aqueous solution. To predict the adsorption isotherms and to determine the characteristic parameters for process design, eight isotherm models:Langmuir, Freundlich, Elovich, Temkin, Fowler-Guggenheim, Jovanovic, Koble-Corrigan, and Hill were applied to experimental data. The equilibrium data were analyzed. The results reveal that the adsorption isotherm models fitted the data in the order: Jovanovic > Freundlich , Koble-Corrigan> Temkin> Fowler-Guggenheim> Elovich> Langmuir, Hill. Adsorption kinetic data were tested using pseudo-first order, pseudo-second order and Elovich model. The kinetics of the adsorption were found to fit the Elovich model.

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Section: Introductionmentioning

confidence: 99%

Equilibrium and Kinetics Studies of adsorption of Copper (II) Ions on Natural Biosorbent

Farouq¹,

Yousef²

2015

IJCEA

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“…Macroporous polymers, on the other hand, have higher capacities and are more highly selective than micro-porous resins, and they are not affected by the concentration of the external solution nor by the solvent. 42 The reaction between the functional group and the metal, and the diffusion 43 of the metals into the polymer, determine the success of coordinating resins in adsorbing metals. Steric hindrance by the polymeric matrix and the hydrophobic nature of the polymeric ligand sometimes limit the coordinating reaction.…”

Section: Introductionmentioning

confidence: 99%

New macroporous polymers for the selective adsorption of gold (III) and palladium (II). I. The synthesis, characterization, and effect of spacers on metal adsorption

Sánchez

Hidalgo

Valiente

et al. 2000

J. Polym. Sci. A Polym. Chem.

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“…[211,212] Apart from modified silica gel, the most frequently used solid-phase adsorbents are activated charcoal and resins (XAD). Activated charcoal is a universal adsorbent for concentrating trace organic materials from aqueous solutions and air.…”

Section: Solid Phase Extraction (Spe)mentioning

confidence: 99%

Sample Preparation for Trace Analysis by Chromatographic Methods

Olariu

Vione

Grinberg

et al. 2010

Journal of Liquid Chromatography & Related Technologies

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The determination of trace analytes in complex natural matrices often requires extensive sample extraction and preparation prior to chromatographic analysis. Correct sample preparation can reduce analysis time, sources of error, enhance sensitivity and enable unequivocal identification, confirmation and quantification. This overview considers general aspects on sample preparation techniques for trace analysis in various matrices. The discussed extraction/enrichment techniques cover classical methods, such as Soxhlet and liquid-liquid extractions along with more recently developed techniques like pressurized liquid extraction, liquid phase microextraction (LPME), accelerated microwave extraction, and ultrasoundassisted extraction. This overview also deals with more selective methodologies, such as solid phase extraction (SPE), solid phase microextraction (SPME) and stir bar sorptive extraction (SBSE). The adopted approach considers the equilibriums involved in each technique. The applicability of each technique in environmental, food, biological and pharmaceutical analyses is discussed, particularly for the determination of trace organic compounds by chromatographic methods.

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Ion exchange in analytical chemistry

Cited by 83 publications

References 2 publications

Equilibrium and Kinetics Studies of adsorption of Copper (II) Ions on Natural Biosorbent

Equilibrium and Kinetics Studies of adsorption of Copper (II) Ions on Natural Biosorbent

New macroporous polymers for the selective adsorption of gold (III) and palladium (II). I. The synthesis, characterization, and effect of spacers on metal adsorption

Sample Preparation for Trace Analysis by Chromatographic Methods

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