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Listar por autor "Siles-Cordero, Maria Teresa"
Mostrando ítems 1-19 de 19
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Characterization of solid magnetic nanoparticles by high resolution continuum source electrothermal atomic absorption spectrometry (HR-CS-ETAAS)
Vereda-Alonso, Elisa Isabel; López-Guerrero, María del Mar; Siles-Cordero, Maria Teresa; Cano-Pavón, José Manuel; García-de-Torres, Amparo (2015-12-21)Nanometer-sized materials have attracted substantial interest in the scientific community because they offer a highly active surface area to volume ratio enable them to have a wide range of potential applications because ... -
Cold vapour generation electrothermal atomic absorption spectrometry and solid phase extraction based on a new nanosorbent for sensitive HG determination in environmental samples (sea water and river water)
Vereda-Alonso, Elisa Isabel; Siles-Cordero, Maria Teresa; López-Guerrero, María del Mar; García-de-Torres, Amparo; Cano-Pavón, José Manuel (2016-07-07)Mercury is not an essential element for plant or animal life and it is a potential environmental toxic because of its tendency to form covalent bonds with organic molecules and the high stability of the Hg-C bond. Reports ... -
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, Maria 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 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, Maria 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 ... -
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, Maria 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 ... -
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, Maria 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 ... -
Magnetic dispersive solid phase microextraction coupled with on-line chemical vapor generation method to extraction/preconcentration of mercury from environmental samples and determination by graphite furnace atomic absorption spectrometry.
García-Mesa, Juan Carlos; Montoro-Leal, Pablo; López-Guerrero, María del Mar; Siles-Cordero, Maria Teresa; Vereda-Alonso, Elisa Isabel; [et al.] (2019-05-29)Mercury (Hg) is classified as priority hazardous substances. Concentrations found in the aquatic environment are at trace levels as result of natural processes, such as erosion and volcanism, and anthropogenic discharges ... -
New methodologies to improve the chemistry learning at University
López-Guerrero, María del Mar; López Guerrero, Gema; Siles-Cordero, Maria Teresa; Vereda-Alonso, Elisa Isabel (2019-09-04)The main objective was to improve the learning of Chemistry subject using Flipped classroom, because it makes class time more engaging. The lecture portion of General Chemistry courses in engineers degrees have been pushed ... -
Optimization of the synthesis of functionalized magnetic nanoparticles and their characterization
Siles-Cordero, Maria Teresa; López-Guerrero, María del Mar; Vereda-Alonso, Elisa Isabel; García-de-Torres, Amparo; Cano-Pavón, José Manuel (2015-12-21)Magnetic nanoparticles (MNPs), a new kind of nanometer-sized material, are widely used in the fields of biotechnology and biomedicine. These particles are superparamagnetic, which means that they are attracted to a magnetic ... -
Optimization of the synthesis of magnetic nanoparticles by solid sampling high resolution continuum source graphite furnace atomic absorption spectrometry and multi-response surface methodology
Vereda-Alonso, Elisa Isabel; López-Guerrero, María del Mar; García-de-Torres, Amparo; Cano-Pavón, José Manuel; Siles-Cordero, Maria Teresa (2016-10-04)Magnetic nanoparticles (MNPs) are a new kind of nanometer-sized materials superparamagnetic with potential applications as magnetic carries for various biomedical uses, wastewater remediation, preconcentration of various ... -
PBL based on chemistry laboratories at engineering degree
López Guerrero, María del Mar; López Guerrero, Gema; Hernandez López, Miguel; Siles-Cordero, Maria Teresa; Gonzalez-Rodriguez, José (2020-10-05)Until now, the didactics used in the teaching of experimental chemistry contradicts its objective by continuing with a traditional approach and with passive didactic methods for students. Even, in virtual environments, ... -
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, Maria 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, Maria Teresa; Vereda-Alonso, Elisa Isabel; [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 ... -
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, Maria 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 ... -
Solid sampling determination of ZnO nanoparticles in eyeshadows by graphite furnace atomic absorption spectrometry
García-Mesa, Juan Carlos; Montoro-Leal, Pablo; Vereda-Alonso, Elisa Isabel; López-Guerrero, María del Mar; Siles-Cordero, Maria Teresa; [et al.] (2019-05-29)The application of nanoparticles (NPs) in science and technology is a fast growing field. Therefore, reliable and straightforward analytical methods are required for their fast determination in different types of samples. ... -
Synthesis and characterization of a novel mesoporous silica funtionalized whith [1,5 bis (di-2-pyridyl) methylene thiocarbohydrazide] and its application as enrichment sorbent for determination of antimony by FI-HG-ETAAS
Siles-Cordero, Maria Teresa; López-Guerrero, María del Mar; Vereda-Alonso, Elisa Isabel; García-de-Torres, Amparo; Cano-Pavón, José Manuel (2014-07-24)Antimony is an element of environmental concern due to its toxicity and biological effects and is therefore considered as a priority pollutant by the US Environmental Protection Agency (EPA). Dissolved antimony is present ... -
Synthesis and characterization of a new nanosorbent based on functionalized magnetic nanoparticles and its use in the determination of mercury by FI-CV-ETAAS
Vereda-Alonso, Elisa Isabel; Siles-Cordero, Maria Teresa; Cano-Pavón, José Manuel; García-de-Torres, Amparo (2015-07-20)In this work, a new chelating sorbent which employs 1,5-bis(di-2-pyridil)methylene thiocarbohydrazide as the functional group and magnetic nanoparticles (MNPs) as its support (DPTH-MNP) was synthetized and characterized. ... -
Synthesis of a new functionalized mesoporous silica for determination of antimony by flow injection solid phase extracton coupled with on line hydride generation ETAAS.
López-Guerrero, María del Mar; Siles-Cordero, Maria Teresa; García-de-Torres, Amparo; Cano-Pavón, José Manuel; Vereda-Alonso, Elisa Isabel (2013-12-19)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 ... -
“Zombie attack” a new way to teach Chemistry
López-Guerrero, María del Mar; García-Mesa, Juan Carlos; Siles-Cordero, Maria Teresa; López Guerrero, Gema; López Jiménez, A. (2019-05-29)The Higher Education requires new models which allow training people able to adapt and survive in changing environments. It is based on the use of technologies and the adaptation of knowledge to people. It is about an ...