A simple and sensitive method for the determination of ultra trace amounts of U(VI) and Th(IV) ions by spectrophotometric method after solid-phase extraction on a new extractant-impregnated resin (EIR) has been reported. The new EIR was synthesised by impregnating a weakly polar polymeric adsorbent, Amberlite XAD-7, with titan yellow (TY) as extractant. The analytical method is based on the simultaneous adsorption of analyte ions in a mini-column packed with TY/XAD-7 and performing sequential elution with 0.5% (w/v) Na2CO3 for uranium and 2.0 M HCl for thorium. The influences of the analytical parameters including pH, salting out agent and sample volume were investigated. The interference effects of foreign ions on the retention of the analyte ions were also explored. The limits of detection for U(VI) and Th(IV) were as low as 50 and 25 ng L−1, respectively. Relative standard deviations (n = 7) for U(VI) and Th(IV) were 3.1% and 2.9%, respectively. The method was successfully applied to the determination of ultra trace amounts of U(VI) and Th(IV) in different real matrices including industrial wastewater samples and environmental waters. The proposed method was validated using three certified reference materials and the results were in good agreement with the certified values.
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Original Articles
Preconcentration and determination of ultra-trace amounts of U(VI) and Th(IV) using titan yellow-impregnated Amberlite XAD-7 resin
Seyyed-Hossein Hosseini Department of Engineering, Kashmar Branch, Islamic Azad University, Kashmar, PO Box 161, Iran, Abolfazl Rahmani-Sani Wastewater Division, Faculty of Health, Sabzevar University of Medical Sciences, Sabzevar, PO Box 319, Iran, Yousef Jalalabadi Department of Engineering, Kashmar Branch, Islamic Azad University, Kashmar, PO Box 161, Iran, Mohammad Karimzadeh Water Division, Department of Engineering, Torbatheydarieh Branch, Islamic Azad University, Torbatheydarieh, PO Box 121, Iran, Ahmad Hosseini-Bandegharaei Department of Engineering, Kashmar Branch, Islamic Azad University, Kashmar, PO Box 161, Iran; Wastewater Division, Faculty of Health, Sabzevar University of Medical Sciences, Sabzevar, PO Box 319, IranCorrespondenceahoseinib@iaukashmar.ac.ir
, Keivan Kharghani Water Division, Department of Engineering, Torbatheydarieh Branch, Islamic Azad University, Torbatheydarieh, PO Box 121, Iran & Ahmad Allahabadi Wastewater Division, Faculty of Health, Sabzevar University of Medical Sciences, Sabzevar, PO Box 319, Iran show all
Seyyed-Hossein Hosseini Department of Engineering, Kashmar Branch, Islamic Azad University, Kashmar, PO Box 161, Iran, Abolfazl Rahmani-Sani Wastewater Division, Faculty of Health, Sabzevar University of Medical Sciences, Sabzevar, PO Box 319, Iran, Yousef Jalalabadi Department of Engineering, Kashmar Branch, Islamic Azad University, Kashmar, PO Box 161, Iran, Mohammad Karimzadeh Water Division, Department of Engineering, Torbatheydarieh Branch, Islamic Azad University, Torbatheydarieh, PO Box 121, Iran, Ahmad Hosseini-Bandegharaei Department of Engineering, Kashmar Branch, Islamic Azad University, Kashmar, PO Box 161, Iran; Wastewater Division, Faculty of Health, Sabzevar University of Medical Sciences, Sabzevar, PO Box 319, IranCorrespondenceahoseinib@iaukashmar.ac.ir
, Keivan Kharghani Water Division, Department of Engineering, Torbatheydarieh Branch, Islamic Azad University, Torbatheydarieh, PO Box 121, Iran & Ahmad Allahabadi Wastewater Division, Faculty of Health, Sabzevar University of Medical Sciences, Sabzevar, PO Box 319, Iran show all
, Keivan Kharghani Water Division, Department of Engineering, Torbatheydarieh Branch, Islamic Azad University, Torbatheydarieh, PO Box 121, Iran & Ahmad Allahabadi Wastewater Division, Faculty of Health, Sabzevar University of Medical Sciences, Sabzevar, PO Box 319, Iran show all
Pages 277-290
Received 31 May 2014
Accepted 01 Jan 2015
Published online: 01 Apr 2015
Original Articles
Preconcentration and determination of ultra-trace amounts of U(VI) and Th(IV) using titan yellow-impregnated Amberlite XAD-7 resin
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