Eva Marguí's research while affiliated with Universitat de Girona and other places

Publications (33)

Article
Elemental content plays an important role in biological processes, and so, the multielemental analysis of human tissue samples is required in biomedical research. Still, the small amount of available biological samples and the adipose content of the samples can be major setbacks for the accurate determination of elemental content. In this study, we...
Chapter
Presently, the development of analytical methods to determine elemental composition of vegetation samples is of significance in many different fields. This chapter discusses the details and potentials of different X‐ray fluorescence (XRF) configurations in the field of multi‐elemental analysis of vegetation samples. Most commonly used sample treatm...
Article
In this contribution, the analytical potential of total reflection X-ray fluorescence (TXRF) instrumentation has been evaluated for the determination of major and trace elements in milk powder. TXRF allows the possibility of direct analysis of solid suspensions without the need for a digestion process and therefore it can be a potential analytical...
Article
Full-text available
The research on the possibilities of using biowaste from urban green areas is scarce. In this work, four plants, widely distributed in urban parks in Central Europe (Lotus corniculatus, Medicago lupulina, Knautia arvensis and Plantago major) were extracted using eco-friendly solvents based either on aqueous cyclodextrin solutions (hydroxypropyl-β-c...
Article
This contribution describes the study conducted on two painted wooden reliefs created in the early 1970s by Vasko Lipovac, a prominent Croatian contemporary artist. Due to the poor condition in which the artworks were found, it was important to establish a strategy for conservation and long-term preservation. Accordingly, preliminary knowledge abou...
Article
In view of the large number of soil analysis in environmental studies dealing with metal contamination, the use of simple, fast, sustainable and cost-effective methodologies is desired. In this sense,...
Article
Due to the current use of gold nanoparticles (AuNPs) in many fields and their potential dissolution/transformation into ionic gold (Au+3), there is an increasing interest in methods enabling the discrimination of Au+3 from AuNPs in environmental samples. In this contribution, the combination of a novel ligand-less surfactant assisted emulsification...
Article
While the nanoscale dimensions give metallic nanoparticles unique physical and chemical properties, their potential release in the environment and subsequent effects on ecosystem health are becoming an increasing concern. In the present contribution, for the first time, a novel and simple analytical approach has been developed for the simultaneous...
Article
At present, there is a considerable interest in Hg monitoring in water samples due to its widespread occurrence and the high toxicity of most of its compounds. Hg determination in water samples by means of total reflection X-ray fluorescence spectrometry (TXRF) entails some difficulties due to the high vapour pressure and low boiling point of this...
Article
The work was conducted to establish contamination from improper disposal of hazardous wastes containing lead (Pb) and antimony (Sb) into nearby soils. Besides other elements in the affected area, the biological role of Sb, its behaviour in the pedosphere and uptake by plants and the food chain was considered. Wastes contained 139532 ± 9601 mg kg-1(...
Article
A novel and simple method is presented for the preconcentration and determination of mercury (Hg) from natural waters through its extraction into a polymer inclusion membrane (PIM) containing the task-specific ionic liquid trioctylme-thylammonium thiosalicylate (TOMATS) followed by Energy Dispersive X-ray fluorescence (EDXRF) analysis. The deter-mi...
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Full-text available
The aim of the research was to study the features of accumulation of heavy metals by assimilation apparatus of coniferous and deciduous arboreous plants. The research identified excess of factual concentrations for Arsenic in mining rock in relation to values stated in IPC (indicative permissible concentrations). It is stated that the metals can be...
Article
In this work, a Total Reflection X-ray fluorescence (TXRF) spectrometry based quantitative methodology for elemental characterization of liquid extracts and solids belonging to old building materials and their degradation products from a building of the beginning of 20th century with a high historic cultural value in Getxo, (Basque Country, North o...
Article
Home-based collection protocols for clinical specimens are actively pursued as a means of improving life quality of patients. In this sense, dried blood spots (DBS) are proposed as a non-invasive and even self-administered alternative to sampling whole venous blood. This contribution explores the potential of energy dispersive X-ray fluorescence sp...
Article
Energy dispersive X-ray fluorescence spectrometry (ED-XRF) is widely used in art and cultural heritage for direct measurements and elemental quantification of solid samples. However, in the literature there are not works dealing with the quantitative application of ED-XRF to liquid extracts coming from samples belonging to cultural heritage. In thi...
Article
In recent years, the production of silver nanoparticles (AgNPs) has grown due to their antibacterial properties. This fact enhances the release of these particles into the environment, especially in soils that are the major sink. To better understand adsorption processes in soils, usually batch kinetic studies are carried out. In this context, we t...
Article
In this work, an analytical methodology in combination with a low power benchtop total reflection X-ray fluorescence (TXRF) system has been developed for multi-elemental analysis of vegetal materials. An easy and rapid sample preparation consisting in suspending 20 mg of sample in de-ionized water showed to be the most suitable for this kind of sam...
Article
Monitoring total bromine and bromide concentrations in soils is significant in many environmental studies. Thus fast analytical methodologies that entail simple sample preparation and low-cost analyses are desired. In the present work, the possibilities and drawbacks of low-power total reflection X-ray fluorescence spectrometry (TXRF) for the deter...
Article
Recent technological improvements have led to a widespread adoption of benchtop total reflection X-ray fluorescence systems (TXRF) for analysis of liquid samples. However, benchtop TXRF systems usually present limited sensitivity compared with high-scale instrumentation which can restrict its application in some fields. The aim of the present work...
Article
Full-text available
The presence of potentially toxic elements (PTEs) may hinder a more widespread application of biosolids in agriculture. At present, the European Directive 86/278/CEE limit the total concentrations of seven metals (Cu, Cr, Ni, Pb, Zn, Cd and Hg) in agricultural soils and in sewage sludges used as fertilizers but it has not taken into consideration t...
Article
Liquid phase microextraction (LPME) procedures have been widely used in combination with atomic and emission spectroscopic techniques for the isolation and preconcentration of trace elements. However, its application in combination with total reflection X-ray spectrometry (TXRF) is still scarce. In this paper, we evaluate the possibilities and draw...
Article
A new method based on dispersive micro-solid phase extraction (DMSPE) and total-reflection X-ray fluorescence spectrometry (TXRF) is proposed for multielemental ultratrace determination of heavy metal ions and arsenic species. In the developed methodology the crucial issue is a novel adsorbent synthesized by grafting 3-mercaptopropyl trimethoxysila...
Article
The present contribution presents a preliminary investigation of the chemical composition with respect to major, minor, trace, and ultratrace elements in several clam species that are frequently used for human consumption in Portuguese markets and worldwide. In order to use a simple and rapid analytical methodology for clam analysis, energy dispers...
Article
This work investigates the potential of high-resolution continuum source graphite furnace atomic absorption spectrometry for the direct determination of Pd, Pt and Rh in two samples of very different nature. While analysis of active pharmaceutical ingredients is straightforward and it is feasible to minimize matrix effects, to the point that calibr...
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Full-text available
Until now, the determination of Cd at trace levels in aqueous samples by TXRF has been restricted. When Mo-target X-ray tubes are used, low sensitivity and interferences with Cd L-lines used for quantification prevent trace analysis. Alternatively, when W-target X-ray tubes are used Cd excitation is limited. For this reason, a sample pretreatment i...
Article
The control of metal catalyst residues (i.e., platinum group metals (PGMs)) in different stages of the manufacturing processes of the active pharmaceutical ingredients (APIs) and, especially, in the final product is crucial. For API specimens, there are strict guidelines to limit the levels of metal residues based on their individual levels of safe...
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Full-text available
A dispersive solid-phase microextraction (DSPME) with multiwalled carbon nanotubes (MWCNTs) as solid sorbent and ammonium pyrrolidinedithiocarbamate (APDC) as chelating agent was developed for determination of selenium. In the proposed procedure, the Se(IV)–APDC complex is adsorbed on MWCNTs dispersed in aqueous samples. After the adsorption proces...
Article
Full-text available
The data reported highlights that the use of XRF spectrometry, in particular HE-P-EDXRF, in combination with membrane preconcentration is a promising alternative for metal analysis at low μgL- levels in complex environmental liquid samples. The method described offers important advantages, such as simplicity of operation and high throughput, compar...
Article
Abandoned mining sites contain residues from ore processing operations that are characterised by high concentrations of heavy metals. The form in which a metal exists strongly influences its mobility and, thus, the effects on the environment. Operational methods of speciation analysis, such as the use of sequential extraction procedures, are common...

Citations

... X-ray fluorescence (XRF) is a multi-element nondestructive analytical technique which allows samples to be stored for other subsequent analyses (Feng et al. 2021). XRF analysis is widely used not only in environmental science (Weindorf et al. 2014) but also in ore, agriculture, food, and medicine (Marguí et al. 2022;Guild and Stangoulis 2021;Jyothsna et al. 2021;Lerner et al. 2019;Fan et al. 2020). According to the dispersion methods, XRF can be divided into energy-dispersive X-ray fluorescence (EDXRF) and wavelength-dispersive X-ray fluorescence (WDXRF). ...
... Brinjal is commonly cultivated in peri-urban areas which are majorly irrigated with industrial effluents containing numerous toxic elements. These toxic elements can translocate and accumulate in the edible parts of the crops and can cause human health risks [5]; in addition, PTEs can interfere with the plant growth, biochemistry and yield by leaf chlorosis, stunted growth, and resulted in limited uptake of essential nutrients and protein synthesis [28,29]. So far, no scientific study has been reported to assess the metalassociated human health risks through metal-contaminated brinjal consumption. ...
... In this process, deposition of calcium on the basal plate in linear or circular shapes takes place [19]. Calcification mainly depends on gestational age and is found in about 40% at delivery [20]. But also for trace elements like zinc, copper, iron, cadmium, manganese, or nickel, spatial differences were reported [12,17,21,22]. ...
... Thus, the extraction of gold (separation/preconcentration) before an instrumental determination is necessary. Microextraction methods, both liquid-liquid [7][8][9] and solid-phase extraction, are most often used. Various sorbents are used to effectively preconcentration of gold ions, such as: resins [10][11][12], activated carbon [13], modified silica gel [14,15] and nanoparticles [16][17][18], modified graphene oxide [19] as well as carbon nanotubes [20]. ...
... Similarly, Bahadir et al. [54] have explored the feasibility of CPE combined with total reflection X-ray fluorescence spectrometry (TXRF) for the simultaneous quantification of AuNP and AgNP. This combination was tested on different types of spiked aqueous matrices, including tap water, seawater, and water collected from the river. ...
... Recently published papers present conventional and new mercury adsorbents, e. g., molybdenum disulfide (Ahmad et al., 2022), activated carbon (M. , PVC-based membranes functionalized with dithizone (Marguí et al., 2018), and also carbon-based nanomaterials: alkynyl cross-linked graphite oxide (Y. , ionic liquid immobilized on multi-walled carbon nanotubes (Sun et al., 2020), ionimprinted sponge combined from salecan and graphene oxide (Hu et al., 2021), and cross-linked sulfydryl-functionalized graphene oxide (Bao et al., 2021). ...
... Different approaches to stabilization of waste rock dumps areas have been tested, including remediation, restoration, rehabilitation and reclamation. At this time, many authors noted that remediation, restoration and rehabilitation are all aspects of reclamation (de San Miguel et al., 2019;Savosko et al., 2020a;Zhukov et al., 2021;Zverkovskyy et al., 2018). We also need to emphasize that the reclamation of the dumps is very costly and often ecologically insufficient in the post-mining landscapes where natural revegetation had been started. ...
... Currently, due to the significant exponential growth of the human population, the pollution of ecosystems is increasing exponentially. It is well known that a huge challenge is to decontaminate the pollution of air, water, soil, and food caused by human activities that have caused the appearance of health and environmental threats [178][179][180][181]. Therefore, the application of microalgae biomass obtained from biorefineries for bioremediation of wastewater and for its application as biofertilizers and biostimulants is becoming a new trend with the benefits of enriched soil and achieving an increment in food productivity in a sustainable, ecological, and health-friendly way. ...
... PIMs are easy to prepare, possess good mechanical properties and are versatile in terms of the target chemical species they can extract and transport . In a recent publication, a PIM made of cellulose triacetate (CTA) and a ionic liquid was shown to effectively extract Hg (II) from different natural waters prior its quantification by EDXRF at ultratrace levels (Elias et al., 2018). In this study, it was also demonstrated that the PIM-sorbent was a suitable medium to preserve the analyte for a 6-month period at room temperature. ...
... Measurements were acquired during 300 s using an Rh tube operating at 50 kV and 700 μA. The quantitative elemental information was obtained using previously optimized empirical calibrations described elsewhere (García-Florentino et al., 2018b). For certain elements (Co, V, Cr, Ni, Cu, Br, As and Ba) semi-quantitative information was only possible to obtain. ...