p-tert-Butylcalix[8]arene loaded silica gel for preconcentration of uranium(VI) via solid phase extraction

Sevda Ayata; Melek Merdivan

doi:10.1007/s10967-009-0397-8

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 283: Issue 3

p-tert-Butylcalix[8]arene loaded silica gel for preconcentration of uranium(VI) via solid phase extraction

Authors:

Sevda Ayata

Sevda Ayata Dokuz Eylul University Faculty of Arts and Science, Chemistry Department Izmir Turkey

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Melek Merdivan

Melek Merdivan Dokuz Eylul University Faculty of Arts and Science, Chemistry Department Izmir Turkey

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Pages:: 603–607

Online Publication Date:: 02 Dec 2009

Publication Date:: 01 Mar 2010

Article Category:: Research Article

DOI:: https://doi.org/10.1007/s10967-009-0397-8

Keywords:: p-tert-Butylcalix[8]arene; Preconcentration; Uranium(VI); Solid phase extraction

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Abstract

This paper reports silica gel loaded with p-tert-butylcalix[8]arene as a new solid phase extractor for determination of trace level of uranium. Effective extraction conditions were optimized in column methods prior to determination by spectrophotometry using arsenazo(III). The results showed that U(VI) ions can be sorbed at pH 6 in a mini-column and quantitative recovery of U(VI) (>95–98%) was achieved by stripping 0.4 mol L⁻¹ HCl. The sorption capacity of the functionalized sorbent is 0.072 mmol uranium(VI) g⁻¹ modified silica gel. The relative standard deviation and detection limit were 1.2% (n = 10) for 1 μg uranium(VI) mL⁻¹ solution and 0.038 μg L⁻¹, respectively. The method was employed to the preconcentration of U(VI) ions from spiked ground water samples.

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Journal of Radioanalytical and Nuclear Chemistry

Print ISSN:: 0236-5731

Online ISSN:: 1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language	English
Size	A4
Year of Foundation	1968
Volumes per Year	1
Issues per Year	12
Founder	Akadémiai Kiadó
Founder's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher	Akadémiai Kiadó Springer Nature Switzerland AG
Publisher's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible Publisher	Chief Executive Officer, Akadémiai Kiadó
ISSN	0236-5731 (Print)
ISSN	1588-2780 (Online)