Listar Química Analítica - (QA) por título
Mostrando ítems 132-151 de 192
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Rapid Magnetic Dispersive solid phase extraction to preconcentration/determination of Cd and Pb in aqueous samples
García-Mesa, Juan Carlos; Montoro-Leal, Pablo; López-Guerrero, María del Mar
; Siles-Cordero, María Teresa; Vereda-Alonso, Elisa Isabel (2019-07-11)
A new magnetic dispersive solid phase extraction (MDSPE) method and graphite furnace atomic absorption spectrometry (GFAAS) have been combined for the analysis of Cd and Pb in environmental samples. For the preconcentration, ... -
Rapid magnetic microextraction to preconcentrate and determinate cadmium from environmental samples
Montoro-Leal, Pablo; García-Mesa, Juan Carlos; López-Guerrero, María del Mar; Siles-Cordero, María Teresa; Vereda-Alonso, Elisa Isabel; García-de-Torres, Amparo; Cano-Pavón, José Manuel[et al.] (2019-05-29)
A novel and greener ultrasonically assisted/modified cloud point extraction procedure for the preconcentration and extraction of trace cadmium from environmental samples was developed. The sorbent material was fabricated ... -
Recent Development in Optical Fiber Biosensors
Ruiz-Sanchez, Antonio Jesus; Sánchez-Rojas, María Fuensanta; Bosch-Ojeda, Catalina; Espinosa-Bosch, Maria (MDPI, 2007)
Remarkable developments can be seen in the field of optical fibre biosensors in the last decade. More sensors for specific analytes have been reported, novel sensing chemistries or transduction principles have been introduced, ... -
Reciclaje y minerales críticos: un juego de tronos entre la geopolítica y la economía.
(2023)En su informe al Parlamento Británico en el área de suministro de materiales críticos para la economía, el Dr Gonzalez Rodriguez estableció una serie de recomendaciones aplicables a muchos países de la UE. El aumento ... -
Remote Laser-Induced Breakdown Spectroscopy in Underwater Archaeology: Identification of Chemical Fingerprints in Shipwrecks
López-Claros, Marina; Fortes-Román, Francisco Javier; Guirado, Salvador; Laserna-Vázquez, José Javier (2015-09-10)
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 ... -
Revolutionizing Environmental Remediation: Innovative Magnetic Systems for Efficient Arsenic, Antimony, and Phosphorus Removal from Potable Aqueous Samples.
Doblado Onieva, Álvaro; Muñoz-Garcia, Andrea; Sánchez-Trujillo, Irene; Montoro-Leal, Pablo; López-Guerrero, María del Mar; Vereda-Alonso, Carlos; Vereda-Alonso, Elisa Isabel[et al.] (2024)
In this comprehensive study, we address the critical issues of environmental contamination by focusing on the remediation of arsenic (As) and antimony (Sb) as well as the efficient removal of phosphorus (P) from aqueous ... -
Role of minor determinants of amoxicillin in the diagnosis of immediate allergic reactions to amoxicillin.
Background: Skin testing of subjects with immediate hypersensitivity to amoxicillin is performed using major and minor determinants of benzylpenicillin plus amoxicillin. However, sensitivity is not optimal, and other ... -
Room-temperature continuous-wave upconverting micro- and nanolasing
(2019-07-18)Abstract: Nanolasers that operate under continuous-wave pump and are robust in diverse environments will make possible compact optoelectronic devices, biomedical imaging, and large-scale quantum photonics. However, current ... -
Searching for Biosignatures in Mars by Differentiation of LIBS Molecular Signals
Delgado-Pérez, Tomás (2022)
If there was life in the past on the Red Planet, specific biosignatures might still be present only if preservation conditions have been favourable for them [1]. The recognition of the habitable past on Mars increases the ... -
Searching for Biosignatures in Mars by LIBS Molecular Signals Discernment
Delgado-Pérez, Tomás; García-Gómez, Laura; Cabalín-Robles, Luisa María; Laserna-Vázquez, José Javier; Fortes-Román, Francisco Javier (2021)
In the present study, LIBS analysis of a set of six selected molecules related to organic biosignatures -or their degradation compounds- have been carried out in both simulated Martian atmosphere and air in order to identify ... -
Secondary ion mass spectrometry and low-energy ion scattering of II-V semiconductor hetero-structures
Laserna-Vázquez, José Javier; Padilla, D.; Vadillo-Pérez, José Miguel (Sociedad Española de Química Analítica, 2013)
Comunicación oral presentada durante la XVIII reunión de la Sociedad Española de Química Analítica y VI reunión Nacional de la Sociedad Española de Espectrometría de MAsas -
Semiautomatic method for the ultra-trace arsenic speciation in environmental and biological samples via magnetic solid phase extraction prior to HPLC-ICP-MS determination
Montoro-Leal, Pablo; García-Mesa, Juan Carlos; Morales-Benítez, Irene; García-de-Torres, Amparo; Vereda-Alonso, Elisa Isabel (Elsevier B.V., 2021)
A novel magnetic functionalized material based on graphene oxide and magnetic nanoparticles (MGO) was used to develop a magnetic solid phase extraction method (MSPE) to enrich both, inorganic and organic arsenic species ... -
Semiautomatic method for the ultra-trace arsenic speciation in environmental waters via magnetic solid phase extraction prior to HPLC-ICP-MS determination
Montoro-Leal, Pablo; García-Mesa, Juan Carlos; López-Guerrero, María del Mar; Siles-Cordero, María Teresa; Vereda-Alonso, Elisa Isabel (2021-01-08)
A new magnetic functionalized material based on graphene oxide magnetic nanoparticles (MGO) was designed and characterized in order to develop a magnetic solid phase extraction method (MSPE) to enrich both inorganic and ... -
Sensitive determination of mercury by magnetic dispersive solid-phase extraction combined with flow-injection-cold vapour-graphite furnace atomic absorption spectrometry
García-Mesa, Juan Carlos; Montoro-Leal, Pablo; Maireles-Rivas, Silvia; López-Guerrero, María del Mar; Vereda-Alonso, Elisa Isabel (Royal Society of Chemistry, 2021-03-31)
Mercury is a non-essential trace element that is toxic to humans due to the bioaccumulation effect. In this work, a ferrofluid based on Fe3O4@graphene oxide nanospheres together with an ionic liquid was used to develop a ... -
Sequential determination of heavy metals in environmental water samples by flow injection-chemical vapour generation-inductively coupled plasma mass spectrometry
Sanchez, Irene; García-de-Torres, Amparo; Vereda-Alonso, Elisa Isabel; Cano-Pavón, José Manuel (2013-12-19)
The toxicity of “heavy metals” has been well recognized for a long time. Often the non-specific term “heavy metals” is used for three of the metals, cadmium, mercury and lead. These have large bioconcentration factors in ... -
Sequential determination of traces of As, Sb and hg by on-line magnetic solid phase extraction coupled with Hr-Cs-Cvg-Gfaas
Cárdenas Valdivia, Abel; Vereda-Alonso, Elisa Isabel; López-Guerrero, María del Mar; García-de-Torres, Amparo; Cano-Pavón, José Manuel (2017-09-21)
A green and rapid method was developed for the simultaneous separation/preconcentration and sequential monitoring pf arsenic, antimony and mercury by flow injection magnetic solid phase extraction coupled with on-line ... -
Simultaneous determination of PT, PD, RH and IR traces in environmental samples by flow injection solid phase extraction coupled with online inductively coupled plasma atomic emission spectroscopy (ICP-AES)
Calvo-Fornieles, Ana; García-de-Torres, Amparo; Vereda-Alonso, Elisa Isabel; Cano-Pavón, José Manuel (2014-07-23)
An increased worldwide usage of platinum group elements (PGEs) has been observed during the last twenty years due to their applications in areas such as chemical industry, metallurgy, jewelry production, dental devices, ... -
Simultaneous determination of traces of PT, PD, OS, IR, RH, AG and AU by using magnetic nanoparticles solid phase extraction coupled with ICP OES
López-Guerrero, María del Mar; Vereda-Alonso, Elisa Isabel; Cano-Pavón, José Manuel; García-de-Torres, Amparo (2017-09-21)
The direct analysis of these target analytes is very limited being essential sample pre-treatment techniques and the use of very sensitive instrumental techniques to carry out determinations. The inductively coupled plasma ... -
Simultaneous enrichment of inorganic and organic species of lead, mercury and vanadium via magnetic solid phase extraction prior to HPLC-ICP-MS determination using a new functionalized patented nanomaterial
Montoro-Leal, Pablo; García-Mesa, Juan Carlos; Morales-Benítez, Irene; López-Guerrero, María del Mar; Vereda-Alonso, Elisa Isabel (X NyNA 2022, 2022-09)
A novel magnetic functionalized nanomaterial based on graphene oxide and magnetic nanoparticles (MGO) was prepared and characterized by several spectroscopic and imaging techniques. This material was packed in a magnetic ... -
Simultaneous LIBS acoustic detection for mineral differentiation. Imaging and standoff studies under terrestrial and martian atmospheric conditions
Álvarez-Llamas, César; Bosáková, Markéta; Purohit, Pablo; Moros-Portolés, Javier; Laserna-Vázquez, José Javier (2022)
The combination of data simultaneously generated by laser-induced breakdown spectroscopy (LIBS) and laser-induced acoustics (LIAc) is a topic of many potential applications as both phenomena cover different sample traits. ...