Sorption Profile and Thermodynamic Characteristics of Nitrosonaphthol Functionalized Sorbent for Metal Ion Enrichment

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Title:Sorption Profile and Thermodynamic Characteristics of Nitrosonaphthol Functionalized Sorbent for Metal Ion Enrichment
Creators:
Memon, Saima Q.
Bhanger, Muhammad I.
Khuhawar, Muhammad Y.
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 70, 9, pp. 1341-1356
Uncontrolled Keywords:Nitroso compounds, Preconcentration, Sorption, Ion exchangers, Functionalized sorbent, Atomic absorption spectroscopy, Azo compounds, Nickel, Thermodynamics, Functionalized resins, Copper, Metal ions

Abstract

A simple and reliable method has been developed using styrene-divinylbenzene-based polymeric material containing 1-nitroso-2-naphthol as chelating agent, to concentrate ultratrace amounts of Ni(II) and Cu(II) ions in aqueous samples. Sorption of both the ions on the new synthetic resin under static and dynamic conditions has been investigated. The sorption has been optimized with respect to pH, shaking and contact time of two phases. Maximum sorption has been achieved from solution of pH 5-8 after 8 min of agitation. Total saturation capacities were 516 ± 2 and 316 ± 2.5 μmol g<sup>-1</sup> for Ni(II) and Cu(II) ions, respectively. The lowest concentration for quantitative recovery (98 ± 1%) is 1.33 and 5 ppb with the preconcentration factor of 750 and 200 for Ni(II) and Cu(II), respectively. Monitoring of the influence of diverse ions on the sorption of metal ions has revealed that phosphate, hydrogencarbonate and citrate reduce the sorption to some extent. Under optimum conditions the sorption data followed Langmuir, Freundlich, and Dubinin-Radushkevich isotherms. The kinetics and thermodynamics of sorption are studied in detail. The sorption procedure is utilized to preconcentrate these ions prior to their determination in tea, human hair, and tap water samples by atomic absorption spectrometry using direct and standard addition methods. <p>

Title:Sorption Profile and Thermodynamic Characteristics of Nitrosonaphthol Functionalized Sorbent for Metal Ion Enrichment
Creators:
Memon, Saima Q.
Bhanger, Muhammad I.
Khuhawar, Muhammad Y.
Uncontrolled Keywords:Nitroso compounds, Preconcentration, Sorption, Ion exchangers, Functionalized sorbent, Atomic absorption spectroscopy, Azo compounds, Nickel, Thermodynamics, Functionalized resins, Copper, Metal ions
Divisions:Life and Chemical Sciences > Institute of Organic Chemistry and Biochemistry > Collection of Czechoslovak Chemical Communications
Journal or Publication Title:Collection of Czechoslovak Chemical Communications
Volume:70
Number:9
Page Range:pp. 1341-1356
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc20051341UNSPECIFIED
ID Code:2415
Item Type:Article
Deposited On:06 Feb 2009 17:18
Last Modified:06 Feb 2009 16:18

Citation

Memon, Saima Q.; Bhanger, Muhammad I.; Khuhawar, Muhammad Y. (2005) Sorption Profile and Thermodynamic Characteristics of Nitrosonaphthol Functionalized Sorbent for Metal Ion Enrichment. Collection of Czechoslovak Chemical Communications, 70 (9). pp. 1341-1356. ISSN 0010-0765

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