Listar Química Analítica - (QA) por título
Mostrando ítems 43-62 de 192
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Deep-UV laser-induced breakdown spectrometry and laser-ionization mass spectrometry for astrochemistry studies.
The recent ambitions of different national space agencies to return to the Moon and to potentially set up a permanent moon base soon, have triggered the interest to adapt different analysis techniques to the conditions of ... -
Dendrimer-Modified Solid Supports: Nanostructured Materials with Potential Drug Allergy Diagnostic Applications
Ruiz-Sanchez, Antonio Jesus; Montañez-Vega, María Isabel
; Nájera-Albendín, Francisco; Vida-Pol, Yolanda; Pérez-de-Inestrosa-Villatoro, Ezequiel (CURRENT MEDICINAL CHEMISTRY, 2012)
Complex functional materials consisting of bioactive molecules immobilized on solid supports present potential applications in biosensoring. Advances in the fabrication of these surface materials are of growing interest ... -
Desarrollo de instrumentación basada en LIBS y su aplicaión en la industria del acero
Cabalín-Robles, Luisa María; Delgado-Pérez, Tomás; Ruiz-del-Castillo, Javier; Laserna-Vázquez, José Javier (2016-07-11)
Resumen: Los avances en la industria del acero y la aparición de nuevos materiales con mejores propiedades físico-químicas y mejor comportamiento frente a fenómenos de corrosión, está promoviendo tanto el desarrollo de ... -
Desarrollo de un método de determinación multielemental para muestras medioambientales por espectrometría de absorción atómica
Vázquez-Palomo, L.; García-Mesa, Juan Carlos; Montoro-Leal, Pablo; Morales-Benítez, Irene; Sánchez Trujillo, I; López Guerrero, M.M.; Vereda-Alonso, Elisa Isabel[et al.] (2022)
La contaminación ambiental es una gran preocupación para el ser humano, siendo los metales de transición y sus derivados los contaminantes más destacables del planeta, por ello es importante su control. La concentración ... -
Detección de compuestos orgánicos mediante LIBS en rocas de interés en exploración planetaria. Aplicaciones en Astrobiología
Cabalín-Robles, Luisa María; Delgado-Pérez, Tomás; García Gómez, Laura; Laserna-Vázquez, José Javier (2019-07-24)
La integración de instrumentos LIBS en misiones de exploración planetaria es una realidad desde hace ya unos años, siendo una tecnología conducente a la obtención de información multielemental en las distintas rocas y ... -
Detection of indigenous organic matter in rocks from the interpretation of carbon molecular forms in the laser-induced plasma
García-Gómez, Laura; Delgado-Pérez, Tomás; Fortes-Román, Francisco Javier; Cabalín-Robles, Luisa María; Laserna-Vázquez, José Javier (Elsevier, 2024-01-19)
Detection of indigenous organic matter (IOM) in rocks using molecular-laser-induced breakdown spectroscopy (LIBS) is reported. IOM refers to carbon-based compounds of variable complexity intimately associated with mineral ... -
Detection of indigenous organic matter in rocks from the interpretation of carbon molecular forms in the laser-induced plasma.
García-Gómez, Laura; Cabalín-Robles, Luisa María; Lucena Navarro, Patricia; Delgado-Pérez, Tomás; Fortes-Román, Francisco Javier; Laserna-Vázquez, José Javier[et al.] (2023)
Oil shale, a sedimentary rock containing organic matter and a variety of inorganic minerals including carbonates and kerogens, serves as a significant source of organic material on Earth [1]. Kerogen, the most abundant ... -
Detection of kerogens in sedimentary rocks by LIBS. Implications for the search for biosignatures on Mars.
García Gómez, Laura; Cabalín-Robles, Luisa María; Vela, Ignacio; Lucena Navarro, Patricia; Delgado-Pérez, Tomás; Fortes-Román, Francisco Javier; Laserna-Vázquez, José Javier[et al.] (2023)
Oil shale is a sedimentary rock that naturally contains organic matter. In its chemical composition presents a wide range of inorganic minerals including carbonates, silicates, etc. and kerogens – a mixture of fossil ... -
Determinación secuencial de CH3Hg y Hg mediante vapor frío-inyección en flujo-ICP-MS
Sánchez-Trujillo, Irene; Vereda-Alonso, Elisa Isabel; García-de-Torres, Amparo; Cano-Pavón, José Manuel (Sociedad Española de Química Analítica (SEQA), 2013)
El mercurio es uno de los contaminantes ambientales más importantes y sus efectos tóxicos se conocen desde hace siglos. Todas las especies de mercurio son tóxicas, aunque generalmente lo son más los compuestos orgánicos ... -
Determination of mercury by flow injection solid phase extraction coupled with on-line hydride generation ETAAS using as solid phase extractant a new functionalized mesoporous silica
López-Guerrero, María del Mar; Siles-Cordero, María Teresa; Vereda-Alonso, Elisa Isabel; García-de-Torres, Amparo; Cano-Pavón, José Manuel (Sociedad Española de Química Analítica (SEQA), 2013)
A chelating resin, [1,5 bis(di-2-pyridyl) methylene thiocarbohydrazide] bonded to mesoporous silica (DPTH-ms), has been used as a novel solid phase extractant. This resin has some advantages compared to most of other ... -
Determination of mercury in sea waters by magnetic dispersive solid phase extraction prior to quantitation by FI-CV-GFAAS
García-Mesa, Juan Carlos; Montoro-Leal, Pablo; Maireles-Rivas, Silvia; López-Guerrero, María del Mar; Vereda-Alonso, Elisa Isabel (2021-01-08)
Mercury is a non-essential trace element that is toxic to humans due to the bioaccumulation effect. In this work, a shell structured Fe3O4@graphene oxide nanospheres were used to develop a magnetic dispersive solid phase ... -
Determination of Pb using F3eO4 GO join to DPTH for ferrofluid based dispersive solid phase extraction
López-Guerrero, María del Mar; Vereda-Alonso, Elisa Isabel; Siles-Cordero, María Teresa; García-de-Torres, Amparo; Cano-Pavón, José Manuel (2018-10-26)
In this work has been described a green and rapid method the synthesis of Fe3O4@GO nanospheres via chemical covalent bonding method. The Fe3O4@GO DPTH was applied to ferrofluid based dispersive solid phase extraction of ... -
Determination of plasmas formation thresholds using femtosecond laser pulses
López-Claros, Marina; Carrasco-García, Irene María; Vadillo-Pérez, José Miguel; Laserna-Vázquez, José Javier (2013-11-05)
Our current research line focuses on studying and understanding processes of laser-material interaction in condensed phase using femtosecond lasers in an attempt to improve the analytical performance of laser-based optical ... -
Development and application of microsampling approaches.
(2023)The talk presented a comprehensive overview of the Volumetric Absorptive Microsampling (VAMS) approach, including the procedures followed and the results obtained by researchers who have worked on this analytical field in ... -
Development of a laser-based analytical platform for the LIBS inspection of individual nanoparticles within an atmospheric pressure optical trap
(UMA Editoria, 2021-02-02)En esta tesis doctoral se presenta un sensor basado en LIBS como técnica de inspección para la caracterización de nanopartículas individuales. El cuerpo de este trabajo se divide en cuatro capítulos en los que se recoge, ... -
Development of a new method for preconcentration, chemical vapour generation and determination of metal ions by ICP OES in environmental samples using magnetic nanoparticles
López-Guerrero, María del Mar; Siles-Cordero, María Teresa; Vereda-Alonso, Elisa Isabel; García-de-Torres, Amparo; Cano-Pavón, José Manuel (2015-12-21)
Silica-coated magnetic nanoparticles (MNP SCMNPs) modified with [1,5-bis (2-pyridyl)-3-sulphophenyl methylene] thiocarbonohydrazide were synthesized by a sol-gel method. These magnetic nanoparticles (PSTHmnp) were employed ... -
Development of an on-line MSPE-ICP-OES method for the preconcentration and speciation of Cr(III)/Cr(VI) in aqueous samples
Morales-Benítez, Irene; García-Mesa, Juan Carlos; Montoro-Leal, Pablo; López-Guerrero, María del Mar; Vereda-Alonso, Elisa Isabel (2021-01-08)
In this work, a new double-reactor method for the analysis and speciation of trace amounts of Cr(III)/Cr(VI) ions in environmental samples has been developed combining on-line magnetic solid phase extraction (MSPE) with ... -
Development of new strategies for direct determination, or using preconcentration, of species with environmental or industrial interest in solid samples or in solution.
(UMA Editorial, 2024)En los últimos años, se ha experimentado una revolución en las ciencias analíticas gracias al desarrollo de la Nanociencia y la Nanotecnología (N&N). Estas dos disciplinas explican conceptos relacionados con materiales y ... -
Differential laser-matter interaction in the ablation of solid samples with laser pulses in the interval between 35 fs – 4 ps.
López-Claros, Marina; Carrasco-García, Irene María; Vadillo-Pérez, José Miguel; Laserna-Vázquez, José Javier (2014-07-16)
Our communication is focused on the influence of the pulse width in the laser-matter interaction during laser ablation of solid materials. The experiments were performed with an 80 MHz, 100 nJ, 400 fs Ti-Saphire oscillator, ... -
Differentiation of closely related mineral phases in Mars atmosphere using frequency domain laser-induced plasma acoustics.
Álvarez-Llamas, César; Purohit, Pablo; Moros-Portolés, Javier; Laserna-Vázquez, José Javier (Elsevier, 2022-08-16)
The combination of data yielded by laser-induced breakdown spectroscopy (LIBS) and laser-induced plasma acoustics (LIPAc) is a topic of many prospective applications as these coexisting phenomena can cover different sample ...