Gadolinium hydroxide coprecipitation system for the separation-preconcentration of some heavy metals

Journal of Hazardous Materials
M Soylak, Hikmet Balgunes

Abstract

A simple and new procedure for the determination of trace amounts of lead(II), cobalt(II), manganese(II) and copper(II) is described, that combines atomic absorption spectrometry-gadolinium hydroxide coprecipitation. One milliliter of 1% gadolinium(III) solution was added to each sample; the pH was then adjusted to 11 in order to collect trace heavy metals on gadolinium(III) hydroxide. The precipitate was separated by centrifugation and dissolved in 1 mL of 1 mol L(-1) HNO3. The influences of analytical parameters including amount of gadolinium(III), sample volume, etc. were investigated on the recoveries of analyte ions. The effects of concomitant ions were also examined. The recoveries of the analyte ions were greater than 95. The detection limits for the analyte elements based on 3 sigma (n=20) were in the range of 0.52-12.0 microg L(-1). The method was applied to the determination of analytes in real samples and good results were obtained (relative standard deviations <10%, recoveries >95%).

References

Apr 2, 2004·Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry·A Rehber Türker, Sitki Baytak
Jun 30, 2005·Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry·Kousuke AtsumiJoichi Ueda
Dec 29, 2005·Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry·Tomoharu MinamiJoichi Ueda
Jul 18, 2006·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Mehrorang Ghaedi
May 15, 2007·Water Research·Krystyna Pyrzynska, Krzysztof Kilian
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Nov 6, 2007·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·N Rajesh, S Manikandan

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Citations

Mar 4, 2010·Food and Chemical Toxicology : an International Journal Published for the British Industrial Biological Research Association·Sibel Saracoglu, Mustafa Soylak
Jul 18, 2009·Journal of Hazardous Materials·R Zare-DorabeiM R Ganjali
May 3, 2011·Food and Chemical Toxicology : an International Journal Published for the British Industrial Biological Research Association·Ali DuranMustafa Soylak

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