Laser-induced breakdown spectroscopy for simultaneous determination of Sm, Eu and Gd in aqueous solution

This paper reports studies on the determination of trace levels of samarium, europium and gadolinium in aqueous samples by laser-induced breakdown spectroscopy (LIBS). In this work, a membrane-based filter paper was used as a sample support for the liquid samples. The laser-induced plasma was produc...

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Bibliographic Details
Published in:Talanta (Oxford) 2008-10, Vol.77 (1), p.256-261
Main Authors: Alamelu, D., Sarkar, A., Aggarwal, S.K.
Format: Article
Language:English
Subjects:
Analytical chemistry
Chemistry
Europium
Exact sciences and technology
Filter paper
Gadolinium
Lanthanides
Laser-induced breakdown spectroscopy (LIBS)
LIBS in liquids
Samarium
Spectrometric and optical methods
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Summary:This paper reports studies on the determination of trace levels of samarium, europium and gadolinium in aqueous samples by laser-induced breakdown spectroscopy (LIBS). In this work, a membrane-based filter paper was used as a sample support for the liquid samples. The laser-induced plasma was produced in air at atmospheric pressure, using a pulsed Nd:YAG laser. Calibration standards and synthetic mixtures of these lanthanides were prepared using solutions prepared from respective high purity oxides. Linear calibration was obtained for Sm, Eu and Gd by normalizing the intensities of lanthanides emission lines with respective to C(I) 193.029 nm emission line. The concentrations of Sm, Eu and Gd were then determined in a solution containing a mixture of these lanthanides. The concentrations of individual lanthanides were obtained within 5% of the expected values. Limits of detection were found to be 1.3 ppmw (Sm), 1.9 ppmw (Eu) and 2.3 ppmw (Gd).
ISSN:0039-9140
1873-3573
DOI:10.1016/j.talanta.2008.06.021