Listar por autor "García-Mesa, Juan Carlos"
Mostrando ítems 1-20 de 31
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A novel material for Sb speciation in aqueous samples.
Morales-Benítez, Irene; García-Mesa, Juan Carlos; Montoro-Leal, Pablo; López-Guerrero, María del Mar
; Vereda-Alonso, Elisa Isabel (2023)
In this work, a new double-reactor method for the analysis and speciation of trace amounts of SbIII/SbV in environmental samples has been developed combining online magnetic solid phase extraction (MSPE) with graphite ... -
Antimony remediation using a new magnetic system in potable aqueous samples.
López-Guerrero, María del Mar; Sánchez-Trujillo, Irene; Morales-Benítez, Irene; García-Mesa, Juan Carlos; Vereda-Alonso, Elisa Isabel (2023)
Heavy metals are serious pollutants because of their toxicity, persistence, and non-degradability in the environment. Sb is easily accumulated in organism and will cause deleterious effects on human beings when the content ... -
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 ... -
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 ... -
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 ... -
Direct solid sampling for speciation of Zn2+ and ZnO nanoparticles in cosmetics by graphite furnace atomic absorption spectrometry
García-Mesa, Juan Carlos; Montoro-Leal, Pablo; Rodríguez-Moreno, Andrés; López Guerrero, María del Mar; Vereda-Alonso, Elisa Isabel (Elsevier, 2021)
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. ... -
Green chemistry: magnetic dispersive solid phase extraction for simultaneous enrichment and determination of V, Ni, Ti and Ga in water samples by HR-CS ETAAS
Vázquez‑Palomo, Laura; Montoro-Leal, Pablo; García-Mesa, Juan Carlos; López Guerrero, María del Mar; Vereda-Alonso, Elisa Isabel (Royal society of chemistry, 2024-11)
This work presents a straightforward, highly sensitive, and cost-effective method for the simultaneous determination of V, Ti, Ni and Ga by high resolution-continuum source electrothermal atomic absorption spectrometer ... -
Magnetic dispersive solid phase extraction for simultaneous enrichment of cadmium and lead in environmental water samples
Montoro-Leal, Pablo; García-Mesa, Juan Carlos; Siles-Cordero, María Teresa; López-Guerrero, María del Mar; Vereda-Alonso, Elisa Isabel (Elsevier, 2020-03-05)
A new magnetic dispersive solid phase extraction (MDSPE) method and graphite furnace atomic absorption spectrometry (GFAAS) have been combined for the simultaneous enrichment of Cd and Pb from environmental water samples ... -
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, María Teresa; Vereda-Alonso, Elisa Isabel; García-de-Torres, Amparo; Cano-Pavón, José Manuel[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 ... -
Magnetic graphene oxide as a valuable material for the speciation of trace elements
Morales-Benítez, Irene; Montoro-Leal, Pablo; García-Mesa, Juan Carlos; Verdeja-Galán, J; Vereda-Alonso, Elisa Isabel (Elsevier, 2022-12)
Magnetic solid phase extraction (MSPE) has been explored for the application in preconcentration processes to achieve highly sensible analytical methods. Attending to the different magnetic adsorbent materials used in this ... -
New magnetic chelating sorbent for chromium speciation by magnetic solid phase extraction on-line with inductively coupled plasma optical emission spectrometry
Morales-Benítez, Irene; Montoro-Leal, Pablo; García-Mesa, Juan Carlos; López-Guerrero, María del Mar; Vereda-Alonso, Elisa Isabel (Elsevier, 2023)
A novel sorbent material employing magnetic nanoparticles (MNPs) coupled to graphene oxide (GO) functionalized with 4-aminobenzenesulfonic acid (M@GO-ABS) has been synthesized and applied to develop an inexpensive and ... -
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, the use of Flipped Classroom
The use of ICT could be interesting for students to increase the participation, motivation and learning about sciences. Chemistry is considerated as very difficult subject. The objective was to carry out a new didactic ... -
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 ... -
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 ... -
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 ...