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Listar por autor "Vereda-Alonso, Elisa Isabel"
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New methodologies to characterize ZnO nanoparticles in cosmetic samples
García-Mesa, Juan Carlos; Montoro-Leal, Pablo; Morales-Benítez, Irene; López-Guerrero, María del Mar; Vereda-Alonso, Elisa Isabel (2022-08-29)In recent years, based on their good properties as solar radiation filters and antibacterial agent, the use of zinc nanoparticles (ZnO NPs) in cosmetic industry has been increased. According to the literature, the potential ... -
New methodologies to improve the chemistry learning at University
López-Guerrero, María del Mar; López Guerrero, Gema; Siles-Cordero, María 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 ... -
Novel molecularly imprinted impedimetric biosensor based on polypyrrole and decorated graphene oxide for the routine monitoring of Lysozyme
Montoro-Leal, Pablo; Frías, Isaac A.M.; Vereda-Alonso, Elisa Isabel; Errachid, Abdelhamid; Jaffrezic-Renault, Nicole (EuChem2022, 2022-09)In this work, a novel molecularly imprinted polymer based on polypyrrole (PPy) and decorated graphene oxide (GO@Fe3O4) was developed for the sensitive detection of lysozyme (LYS). The synthesized material (MIPPy/GO@Fe3O4) ... -
Optimization of the mechanochemical synthesis of graphene oxide and its characterization. Application to the synthesis of magnetic graphene oxide.
Montoro-Leal, Pablo; García-Mesa, Juan Carlos; Morales-Benítez, Irene; López-Guerrero, María del Mar; Vereda-Alonso, Elisa Isabel (2023)Nowadays, the use of materials derived from graphene oxide (GO) is extended in the technologycal industry and research due to their excellent physico-chemical properties. This fact invites us to investigate a sustainable ... -
Optimization of the synthesis of functionalized magnetic nanoparticles and their characterization
Siles-Cordero, María 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, María 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 ... -
Phosphorus remediation using a new magnetic system in aqueous samples
Morales-Benítez, Irene; García-Muñoz, Ana María; Montoro-Leal, Pablo; García-Mesa, Juan Carlos; López-Guerrero, María del Mar; Vereda-Alonso, Elisa Isabel[et al.] (2022-08)Phosphorus is a natural element that can be found in soils and aquatic ecosystems. Its presence over the recommended concentration, damages the hydrosphere equilibrium, through eutrophication. Consequently, there is a ... -
Phosphorus removal and recycled from tertiary effluent in sewage treatment plant using graphene modified with magnetic nanoparticles (M@GO).
Muñoz-García, Andrea; Montoro-Leal, Pablo; López-Guerrero, María del Mar; Vereda-Alonso, Carlos; Vereda-Alonso, Elisa Isabel (2023)Phosphorus is employed in detergents, as fertilizers in agriculture, etc. As a nutrient for plants, too much phosphorus can cause increased growth of algae and large aquatic plants, which can result in decreased levels of ... -
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 ... -
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 preconcentration and determination of trace metals (V, Ni, Ti, and Ga) in environmental samples by high resolution continuum source electrothermal atomic absorption spectrometry.
Vázquez‑Palomo, Laura; Montoro-Leal, Pablo; García-Mesa, Juan Carlos; López-Guerrero, María del Mar; Vereda-Alonso, Elisa Isabel (2023)In this work is presented a simple, sensitive, low-cost method for direct and simultaneous determination of V, Ti, Ni and Ga by electrothermal atomic absorption spectrometer (ETAAS) in aqueous environmental samples (tap ... -
Síntesis y aplicación de un nuevo nanomaterial magnético para la especiación online de cromo en muestras acuosas
Morales-Benítez, Irene; García-Mesa, Juan Carlos; Montoro-Leal, Pablo; López-Guerrero, María del Mar; Vereda-Alonso, Elisa Isabel (2022-07)En este trabajo, se ha desarrollado un nuevo método de doble reactor para el análisis y especiación de cantidades traza de iones Cr (III)/Cr (VI) en muestras ambientales que combina la extracción magnética en fase sólida ...