Journal
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
Volume 24, Issue -, Pages 87-91Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2014.09.013
Keywords
Cloud point extraction; Europium; Atomic absorption spectrometry
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Cloud point extraction (CPE) was used for Eu(III) determination in water samples using flame atomic absorption spectrometry (FAAS). Complex of Eu(III) with alizarin red S was extracted into the surfactant-rich phase of octylphenoxypolyethoxyethanol (Triton X-114) from samples at room temperature in presence of an amount of NaNO3. The parameters affecting CPE such as sample pH and concentrations of NaNO3, complexing agent and Triton X-114 were studied. Under the optimized conditions, the limit of detection (3 sigma) was 6 ng mL(-1) and the relative standard deviation (RSD) was 1.95%. The method was successfully applied to Eu(III) determination in water samples. (C) 2014 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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