Abstract

GARCIMUNO, Mayra  and  DIAZ PACE, Diego M. Determinación de sodio en agua mediante espectroscopia de plasmas producidos por láser. Cienc. docencia tecnol. [online]. 2013, n.47, pp.219-230. ISSN 1851-1716.

In the present work, Laser-induced breakdown spectroscopy (LIBS) was applied to quantitative determination of Na in fresh water, of interest to agriculture for the study of alkalinity in irrigation water. To perform the analysis, liquid solutions were prepared with known concentrations of the analyte, mixed with calcium oxide and pressed into solid pellets. The plasmas were generated in air at atmospheric pressure using a pulsed Nd:YAG laser. A calibration curve was constructed and the limit of detection was calculated. Fresh water samples were analyzed and the results were compared with those obtained by atomic absorption spectroscopy, demonstrating the feasibility of the method for determination of Na in fresh water.

Keywords : LIBS; Laser-Induced Breakdown Spectroscopy; Water; Na analysis.

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