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5 results on '"Mayra Garcimuño"'

1. Determinación de sodio en agua mediante espectroscopia de plasmas producidos por láser

Author

Mayra Garcimuño and Diego M. Díaz Pace

Subjects
Technology, Science
Abstract

En el presente trabajo, la técnica Espectroscopia de plasmas producidos por láser (Laser-induced breakdown spectroscopy –LIBS–) se aplicó a la determinación cuan- titativa de Na en agua natural dulce, de interés en agricultura para el estudio de la alcalinidad de aguas de regadío. Para efectuar el análisis, se prepararon soluciones con concentraciones conocidas del analito, se mezclaron con óxido de calcio y se compactaron en pastillas sólidas. Los plasmas se produjeron en aire a presión atmos- férica utilizando un láser pulsado Nd:YAG. Se construyó una curva de calibración y se calculó el límite de detección. Se analizaron muestras de agua natural y los resultados se compararon con los obtenidos mediante espectroscopia de absorción atómica. Se demostró la factibilidad del método para la determinación de Na en agua natural dulce.

Published
2013

2. Repensar los museos y centros de ciencias

Author

César A. Domínguez, Gabriela Guzzy Arredondo, Elaine Reynoso Haynes, Javier Arias Jiménez, Mayra Garcimuño, Marco Antonio Ortega Soriano, Omar Torreblanca Navarro, Patricia Aguilera Jiménez, María Yazmín Hernández Arellano, Diana Carina Monterrosa Ferreira, Alba Patricia Macías Nestor

Published
2020

3. Characterization of main constituents in potato (Solanum tuberosum) tissues using LIBS

Author

Graciela Bertuccelli and Mayra Garcimuño

Subjects
Mechanical Engineering, Engineering (miscellaneous), Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials
Abstract

Fil: Garcimuno, Mayra. Universidad Nacional del Centro de la Provincia de Buenos Aires. Centro de Investigaciones en Fisica e Ingenieria del Centro de la Provincia de Buenos Aires. - Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Tandil. Centro de Investigaciones en Fisica e Ingenieria del Centro de la Provincia de Buenos Aires. - Provincia de Buenos Aires. Gobernacion. Comision de Investigaciones Cientificas. Centro de Investigaciones en Fisica e Ingenieria del Centro de la Provincia de Buenos Aires; Argentina

Published
2015

4. Analysis of Minerals and Rocks by Laser-Induced Breakdown Spectroscopy

Author

Norberto A. Gabriele, Cristian A. D'Angelo, Graciela Bertuccelli, Diego Martin Diaz Pace, Mayra Garcimuño, and D. Bertuccelli

Subjects
Atmospheric pressure, Infrared, Chemistry, Analytical chemistry, Mineralogy, Surface finish, Plasma, Laser, Atomic and Molecular Physics, and Optics, Analytical Chemistry, Characterization (materials science), law.invention, law, Laser-induced breakdown spectroscopy, Spectroscopy
Abstract

Laser-induced breakdown spectroscopy (LIBS) technique was applied for rapid analysis of major and minor elements composing geological samples including minerals, rocks, and a soil sample. The plasma was produced in air at atmospheric pressure by focusing on the targets a pulsed infrared Nd:YAG laser in open-path configuration. The emitted light in the UV-Vis was analyzed by a compact LIBS system to measure spectral emission lines of Si, Al, Fe, Ca, Na, K, Mg, C, Cu, Mn, and Ti. The experimental issues relevant for the analysis of the different samples were investigated by taking into account their peculiar features: drilling through a weathered layer, roughness and grain-size considerations, statistical averaging, and accuracy of the measurements. In this approach, the characterization of the samples was achieved by studying the relative variations of the emission intensities of each element normalized with respect to an internal standard. The present study shows the usefulness of LIBS as a tool ...

Published
2011

5. Laser-induced breakdown spectroscopy for quantitative analysis of copper in algae

Author

Graciela Bertuccelli, D.M. Díaz Pace, and Mayra Garcimuño

Subjects
Física Atómica, Molecular y Química, Materials science, Calcium hydroxide, LIBS, Atmospheric pressure, Algae, Calibration curve, Copper analysis, Ciencias Físicas, Pellets, Analytical chemistry, chemistry.chemical_element, Laser, Copper, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, law.invention, chemistry.chemical_compound, chemistry, law, Laser-induced breakdown spectroscopy, Electrical and Electronic Engineering, Spectroscopy, CIENCIAS NATURALES Y EXACTAS
Abstract

Laser-induced breakdown spectroscopy (LIBS) has been applied for quantitative analysis of Cu in algae plants, an issue of paramount importance for environmental monitoring. For the analysis with LIBS, algae were compacted into solid pellets with powdered calcium hydroxide addition as binder and a pulsed Nd:YAG laser was employed to produce the plasmas in air at atmospheric pressure. In this approach, atomic lines from traces of Cu were detected, as well as other major and minor elements. The plasma was characterized and a calibration curve was constructed with reference samples prepared with calcium hydroxide. The results obtained demonstrated the usefulness of the method for Cu monitoring in algae plants. Fil: Bertuccelli, Graciela. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ciencias Exactas. Instituto de Fisica Arroyo Seco; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Tandil. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires; Argentina Fil: Diaz Pace, Diego Martin. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ciencias Exactas. Instituto de Fisica Arroyo Seco; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Tandil. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires; Argentina Fil: Garcimuño, Mayra. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ciencias Exactas. Instituto de Fisica Arroyo Seco; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Tandil. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires; Argentina

Published
2013

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