Laser ablation-laser induced breakdown spectroscopy for the

Applied optics · Apr 2013

Laser ablation-laser induced breakdown spectroscopy for the measurement of total elemental concentration in soils.

The performances of traditional laser-induced breakdown spectroscopy (LIBS) and laser ablation-LIBS (LA-LIBS) were compared by quantifying the total elemental concentration of potassium in highly heterogeneous solid samples, namely soils. Calibration curves for a set of fifteen samples with a wide range of potassium concentrations were generated. The LA-LIBS approach produced a superior linear response different than the traditional LIBS scheme. ⋯ Results showed an acceptable linear response for Ca, Fe, Mg, and K while poor signal responses were found for Na and Mn. Signs of remaining matrix effects for the LA-LIBS approach in the case of soil analysis were found and discussed. Finally, some improvements and possibilities for future studies toward quantitative soil analysis with the LA-LIBS technique are suggested.

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- Jhon Pareja, Sebastian López, Daniel Jaramillo, David W Hahn, and Alejandro Molina.
- Bioprocesos y Flujos Reactivos, Facultad de Minas, Universidad Nacional de Colombia-Sede Medellín, Carrera 80, Medellín No. 65-223, Colombia.
- Appl Opt. 2013 Apr 10; 52 (11): 2470-7.
AbstractThe performances of traditional laser-induced breakdown spectroscopy (LIBS) and laser ablation-LIBS (LA-LIBS) were compared by quantifying the total elemental concentration of potassium in highly heterogeneous solid samples, namely soils. Calibration curves for a set of fifteen samples with a wide range of potassium concentrations were generated. The LA-LIBS approach produced a superior linear response different than the traditional LIBS scheme. The analytical response of LA-LIBS was tested with a large set of different soil samples for the quantification of the total concentration of Fe, Mn, Mg, Ca, Na, and K. Results showed an acceptable linear response for Ca, Fe, Mg, and K while poor signal responses were found for Na and Mn. Signs of remaining matrix effects for the LA-LIBS approach in the case of soil analysis were found and discussed. Finally, some improvements and possibilities for future studies toward quantitative soil analysis with the LA-LIBS technique are suggested.

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Laser ablation-laser induced breakdown spectroscopy for the measurement of total elemental concentration in soils.

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