Listar Química Analítica - (QA) por título
Mostrando ítems 83-102 de 192
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Inductively coupled plasma mass spectrometry study of the retention behavior of arsenic on solid phase extraction and its application
López-Guerrero, María del Mar
; Vereda-Alonso, Elisa Isabel; Siles-Cordero, María Teresa; García-de-Torres, Amparo; Cano-Pavón, José Manuel (2016-10-04)
A rapid and easy method has been developed for separation, pre-concentration and determination of arsenic by flow injection solid phase extraction coupled with on-line chemical vapour generation inductively coupled plasma ... -
Insights on the acting role of Martian atmosphere in the fragmentation pathways of organic and C-containing inorganic compounds using LIBS
Delgado-Pérez, Tomás; Mora, Rocío; García, Laura; Cabalín-Robles, Luisa María; Laserna-Vázquez, José Javier (2018-07-20)
In the present work, a preliminary fundamental study about the influence of background gas in Martian surface conditions (CO2, P=7 mbar) on the formation of emitting species in laser-induced plasmas of ablated C-containing ... -
Ion and Photon Emission in Laser Ablation Processes of Energetic Materials in Condensed Phase
Delgado-Pérez, Tomás (UMA Editorial, 2013)
En la presente memoria se ha llevado a cabo en primer lugar un estudio de los procesos de ionización y fragmentación de materiales energéticos orgánicos mediante espectrometría de masas de tiempo de vuelo por ionización ... -
La detección de explosivos de elaboración casera: ciencia forense al servicio de la seguridad
(2018-11-02)Un informe reciente producido por la acción sobre la violencia armada (AOAV) sobre el número de muertes causadas por explosiones en 2017 concluye que veintiún países sufrieron violencia por la acción de explosivos con ... -
Laser ionization mass spectrometry is not the poor man`s ICPMS
Vadillo-Pérez, José Miguel; Medina, Samara; Laserna-Vázquez, José Javier (2016-09-28)
Laser ionization mass spectrometry includes in a broad sense, any laser-based technique capable of generating ions by the direct action of a pulsed laser over a solid sample. Over a certain laser energy, LIMS allows the ... -
Laser-induced breakdown spectrometry with laser pulses in femtoseconds to picoseconds regime and their influence on ablation quality
Manzoor, Sadia; Vadillo-Pérez, José Miguel; Laserna-Vázquez, José Javier (2019-09-20)
The communication is focused on the influence of the pulse width, ranging from femtosecond to picosecond, on the laser – matter interaction during laser ablation of solid materials. Modifications in the stretcher-compressor ... -
Laser-induced breakdown spectroscopy of cyanobacteria in carbonate matrices under simulated Martian environment
García-Gómez, Laura; Delgado-Pérez, Tomás; Fortes-Román, Francisco Javier; Laserna-Vázquez, José Javier; Cabalín-Robles, Luisa María; Del Rosal Padial, Yolanda Remedios; Lucena, Patricia[et al.] (2021)
The finding on the Martian surface of hydrated salt minerals, like carbonates and sulphates, and their interpretation as deriving from the desiccation of old bodies of water, has provided an evidence of liquid water activity ... -
Laser-induced breakdown spectroscopy of samples of astrochemical interest handled as individual particles by means of non-inertial acoustic confinement.
Vadillo-Pérez, José Miguel; Moros-Portolés, Javier; Laserna-Vázquez, José Javier; Marzo Pérez, Asier (2023)
The present communication will show experiments performed with an acoustic levitator capable of trapping individual solid particles of different sizes (preferably in the range between 0.1 - 5 mm), shapes, and chemical ... -
Laser-induced breakdown spectroscopy with laser pulses in the interval between 35 fs – 4 ps
Manzoor, Sadia; Vadillo-Pérez, José Miguel; Laserna-Vázquez, José Javier (2020-09-02)
This works presents the laser ablation studies for metals such as Chromium, Titanium, Iron and Copper by ultrashort laser pulses under pulse-width from 35 fs to 4 ps. -
Laser-induced breakdown spectroscopy. Un herramienta exclusiva para el análisis químico de objetos distantes
Laserna-Vázquez, José Javier (2013-11-19)
El desarrollo y aplicación de tecnologías avanzadas de láser para la caracterización de materiales ofrece soluciones rentables para una variedad de problemas técnicos y de investigación en diversas áreas de aplicación, ... -
Laser-Induced Plasma Spectroscopy Of Organic Compounds: Understanding Fragmentation Processes Using Ion-Photon Coincidence Measurements
Comunicación enviada a la 8th Euromditerranean Conference on Laser Induced Breakdown Spectroscopy, presentada en forma de charla oral -
LIBS analysis of individual nanoparticles: attogram detection limits in optical traps
Laserna-Vázquez, José Javier (2019-10-21)
LIBS ANALYSIS OF INDIVIDUAL NANOPARTICLES: ATTOGRAM DETECTION LIMITS IN OPTICAL J. Laserna* Department of Analytical Chemistry, University of Malaga, Malaga, Spain *laserna@uma.es Single particle characterization ... -
LIBS and Acoustic Measurements of Rocks and Regolith Found in the Traverse of the Perseverance Rover Across the Jezero Crater, Mars
Laserna-Vázquez, José Javier; Moros-Portolés, Javier; Álvarez-Llamas, César; Purohit, Pablo; Angel, S.M.; Bernardi, P.; Bousquet, O.; Cadu, A.; Chide, B.; Clavé, E.; Clegg, S.; Dauson, E.; Forni, O.; Fouchet, T.; Gasnault, O.; Jacob, X.; Lacombe, G.; Lanza, N.L.; Larmat, C.; Lasue, J.; Lorenz, R.D.; Meslin, P. -Y.; Montmessin, F.; Murdoch, N.; Ollila, A.M.; Pilleri, P.; Reyes-Newell, A. L.; Schroder, S.; Stott, A.; Cate, J. Ten; Vogt, D.; Maurice, S.; Wiens, R.C.; Mimoun, D.[et al.] (2022)
The SuperCam instrument of the NASA MARS 2020 Perseverance rover combines a suite of atomic and molecular spectroscopies intended for an extensive description of rocks, soils and minerals in the surroundings of the landing ... -
LIBS and acoustics correlated. Towards an improved strategy for rocks and minerals identification
Laserna-Vázquez, José Javier (2021)
The SuperCam instrument of the NASA MARS 2020 rover combines a suite of atomic and molecular spectroscopies intended for an extensive description of rock, soils and minerals in the surroundings of the landing site of the ... -
LIBS combined with a decision tree-based algorithm: an analytical tandem for sorting of waste refractories used in steelmaking industries
Moros-Portolés, Javier; Maza, David; Soto, Aintaze; Cabalín-Robles, Luisa María; Laserna-Vázquez, José Javier (2021)
Refractories are materials that can withstand high temperatures and maintain their mechanical functions and properties during long time, even in contact with corrosive liquids or gases. These materials are indispensable ... -
LIBS detection of atoms and molecules in nanoplasmas of levitated particles
Laserna-Vázquez, José Javier (2018-11-09)
Single particle characterization still constitutes a challenge to contemporary chemical analysis. Considerable effort worldwide is being devoted to conceive experimental strategies providing detection capabilities compatible ... -
Libs in cultural heritage: recognition and identification of objects in an underwater archaeological shipwreck
López-Claros, Marina; Fortes-Román, Francisco Javier; Laserna-Vázquez, José Javier; Guirado, Salvador (2016)
Nowadays, one of the most important areas of interest in archeology is the characterization of the submersed cultural heritage. Mediterranean Sea is rich in archaeological findings due to storms, accidents and naval battles ... -
LIBS molecular signals in martian atmosphere as a tool in the search for biosignatures
LIBS spectra acquisition of a set of selected organic molecules related to biosignatures or their degradation compounds have been carried out in Martian atmosphere by simulating planetary exploration conditions. The study ... -
LIBS spectroscopy meets the ocean. Chemical analysis of archeological materials in Mediterranean waters
Laserna-Vázquez, José Javier (2015-09-02)
After decades of development in laboratories and land operations, chemical analysis of submerged objects is starting to become a reality. While the analysis of water at variable depth has been demonstrated in the past using ... -
LIBS-Acoustic Mid-Level Fusion Scheme for Mineral Differentiation under Terrestrial and Martian Atmospheric Conditions
Álvarez-Llamas, César; Purohit, Pablo; Laserna-Vázquez, José Javier (American Chemical Society, 2022-01-12)
The shockwave produced alongside the plasma during a laser-induced breakdown spectroscopy event can be recorded as an acoustic pressure wave to obtain information related to the physical traits of the inspected sample. In ...