Article
Energy & Fuels
Adam Smolinski, Marek Stempin, Natalia Howaniec
Summary: In this paper, the content of chemical elements in waste was determined using ICP-OES and WDXRF techniques. To overcome the limitations of expensive and time-consuming analyses, a quick and inexpensive method for preliminary identification of the chemical composition of tested samples was developed. The samples were prepared as durable tablets for X-ray measurements. The limits of quantification were determined, and the uncertainty of the results was estimated by comparing them with a calibration method using standards and certified reference materials.
Article
Oncology
Si Chen, Ruben Omar Lastra, Tatjana Paunesku, Olga Antipova, Luxi Li, Junjing Deng, Yanqi Luo, Michael Beau Wanzer, Jelena Popovic, Ya Li, Alexander D. Glasco, Chris Jacobsen, Stefan Vogt, Gayle E. Woloschak
Summary: Metal-oxide nanomaterials can enter cells and interact with cellular structures and molecules due to their physical-chemical properties. Imaging techniques like X-ray fluorescence microscopy help study these interactions, leading to the development of safer and more predictable nanoparticle-based therapies.
Review
Instruments & Instrumentation
Vanessa J. Ferreira, Fernanda B. S. Virgens, Lais N. Pires, Fabio de S. Dias, Valfredo A. Lemos, Leonardo S. G. Teixeira
Summary: X-ray fluorescence spectrometry (XRF) is widely used for multi-element determination in various samples. However, for trace level determination, separation and preconcentration procedures are often used to enhance sensitivity. Liquid-phase extraction (LPE) is a simple, fast, and easily automated pretreatment technique, and its combination with XRF has been extensively studied.
APPLIED SPECTROSCOPY REVIEWS
(2023)
Article
Spectroscopy
F. D. Leite, P. M. S. Carvalho, R. G. Oliveira, M. C. Lopes, I. Domingues, P. M. M. Correia, L. F. N. D. Carramate, S. Pessanha, J. F. C. A. Veloso, A. L. M. Silva
Summary: Understanding the environmental risks of heavy metals is crucial due to their harmful effects on air, soil, water, and living organisms. The Zebrafish has been proven to be an excellent animal model for studying physiological responses and toxicology. A Full-Field Energy Dispersive X-ray Fluorescence imaging system was used to monitor heavy metal accumulation in Zebrafish during a water borne exposure bioassay.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2022)
Article
Chemistry, Applied
Vanessa J. Ferreira, Valfredo A. Lemos, Leonardo S. G. Teixeira
Summary: Dynamic reversed-phase liquid-liquid microextraction (RP-LLME) was employed to prepare vegetable oil samples for the determination of cadmium, chromium, manganese, and nickel. The method involved optimizing parameters and using EDXRF for metal determination, resulting in low limits of quantification and high preconcentration factors.
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
(2023)
Article
Chemistry, Analytical
Xing Ma, Marti Z. Hua, Chao Ji, Jing Zhang, Rui Shi, Yabing Xiao, Xiaojing Liu, Xiahong He, Wenjie Zheng, Xiaonan Lu
Summary: This study presents a high-sensitivity X-ray fluorescence method for rapid and low-cost detection of arsenic, lead, and cadmium residues in herbal medicines. The method offers fast and accurate analysis, improving the efficiency of heavy metal contamination monitoring in herbal medicines.
Review
Biochemical Research Methods
Korbinian Heimler, Christine Gottschalk, Carla Vogt
Summary: Confocal micro X-ray fluorescence (CMXRF) spectroscopy is a valuable non-destructive technique for analyzing the elemental composition of samples. It uses mono- or polychromatic X-rays to excite atoms in the sample, resulting in the emission of fluorescence radiation that is detected with capillary optics. CMXRF has a depth-resolved analysis capability, making it useful for studying samples with inhomogeneous element distribution and a light matrix. It has applications in materials science, geology, biology, art, and archaeology, providing insights into the provenance, composition, and making of artifacts and works of art. Ongoing technical developments aim to increase sensitivity and improve quantification for three-dimensional samples, expanding the method's utility in various fields.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Vanessa de Jesus Ferreira, Jorge S. Almeida, Valfredo A. Lemos, Olivia M. C. de Oliveira, Karina S. Garcia, Leonardo S. G. Teixeira
Summary: A method combining RP-VALLME and EDXRF was developed for the determination of Cu, Mn, Ni, and Pb in diesel oil samples, showing low detection limits, good precision, and high recovery rates. This method proved to be efficient and comparable to ICP-OES for the analysis of the four analytes.
Review
Chemistry, Analytical
Philip J. Potts, Mike Sargent
Summary: Hand-held X-ray fluorescence (XRF) instrumentation is commonly used in problem solving applications. In situ measurements provide cheap and rapid results, but interpretations must be careful to avoid misleading outcomes. Understanding the depth of the XRF excited volume, data interpretation near detection limits, and factors affecting uncertainty budget are important for the proper use of XRF data.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2022)
Article
Geology
Mathis Warlo, Glenn Bark, Christina Wanhainen, Iris McElroy, Alexander Bjorling, Ulf Johansson
Summary: In order to maximize profit and sustainability in mining operations, understanding the chemistry, mineralogy, texture, and structure of ores is essential. Synchrotron radiation X-ray fluorescence mapping provides high-resolution analysis potential for trace elements, but challenges in data acquisition and processing require careful human examination for complex geological samples.
ORE GEOLOGY REVIEWS
(2022)
Article
Engineering, Environmental
Om Prakash Kumar, P. Gopinathan, Amiya S. Naik, T. Subramani, Prakash K. Singh, Anupam Sharma, Sudip Maity, Sujan Saha
Summary: This study investigated the mineralogical and elemental distribution in thirty lignite samples from the Barmer Basin using advanced techniques such as X-ray diffraction, X-ray fluorescence spectrometry, and inductively coupled plasma mass spectrometry. The research revealed the presence of various minerals and elements in the lignite ash, with iron oxide, sulphur oxide, calcium oxide, and quartz being the most abundant. Trace amounts of toxic oxides were also detected, which can have adverse effects on human health and the environment. Additionally, different concentrations of rare earth elements were observed between the Giral and Sonari mines.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2023)
Article
Chemistry, Physical
Pavel Novotny
Summary: This paper investigates the possibility of characterizing radioactive samples in detail using X-ray fluorescence analysis, as well as demonstrates the application of this measurement for improving the accuracy of beta spectra calculation in the MCNPX software package. The results show that high-resolution XRF 2D scanning can reduce uncertainties in Monte Carlo simulations.
RADIATION PHYSICS AND CHEMISTRY
(2022)
Article
Chemistry, Analytical
Natalia Manousi, Abuzar Kabir, Kenneth G. Furton, Aristidis N. Anthemidis
Summary: This study presents a novel dual lab-in-syringe flow-batch platform for automatic fabric-disk-in-syringe sorptive extraction followed by oxidative back-extraction as a front end to inductively coupled plasma atomic emission spectrometry. The developed platform shows excellent linearity, good method precision, and applicability for metal analysis at trace levels. It offers advantages including effectiveness, compactness, lower back-pressure, and lower time of analysis.
ANALYTICAL CHEMISTRY
(2022)
Article
Computer Science, Interdisciplinary Applications
Chuanpeng Wu, Liang Li
Summary: X-ray fluorescence computed tomography (XFCT) is a promising method for imaging the distribution of high-Z elements in a target object. Using a Compton camera for XFCT can overcome the limitations of mechanical collimators and achieve higher photon collection efficiency. In this work, a Compton camera platform is demonstrated for XFCT imaging, showing its potential for handheld XRF imaging and image-guided interventional operation.
IEEE TRANSACTIONS ON MEDICAL IMAGING
(2023)
Article
Chemistry, Analytical
Frank Foerste, Leona Bauer, Korbinian Heimler, Bastian Hansel, Carla Vogt, Birgit Kanngiesser, Ioanna Mantouvalou
Summary: Confocal micro-X-ray fluorescence spectroscopy is a technique that can be used for elemental imaging with 3D resolution using laboratory spectrometers. Quantification techniques are important for interpreting data and reconstructing sample composition and geometry. This article presents an analytical routine for the quantitative investigation of 3D data sets obtained with laboratory spectrometers.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2022)
Article
Spectroscopy
Eva Margui, Jasna Jablan, Ignasi Queralt, Fabjola Bilo, Laura Borgese
Summary: This study evaluates the possibilities and drawbacks of combining simple sample treatments with total reflection X-ray fluorescence spectrometry (TXRF) for the analysis of various biological samples, based on experiments with different types of biological samples to estimate the analytical capabilities of the proposed TXRF methods.
X-RAY SPECTROMETRY
(2022)
Article
Spectroscopy
Eva Margui, Rogerta Dalipi, Emanuele Sangiorgi, Maja Bival Stefan, Katarina Sladonja, Vanessa Rogga, Jasna Jablan
Summary: This study compared results of essential element analysis in vegetation samples using different analytical approaches, finding suspension preparation and TXRF analysis to be sustainable and fast alternatives compared to traditional digestion and ICP-OES or FAAS analysis. Different methods were applied to herbal tea analysis for medicinal purposes.
X-RAY SPECTROMETRY
(2022)
Article
Engineering, Environmental
Seghir Dekkouche, Sergio Morales-Torres, Ana R. Ribeiro, Joaquim L. Faria, Claudia Fontas, Ounissa Kebiche-Senhadji, Adrian M. T. Silva
Summary: TiO2 in situ growth on three commercial membranes and its hydrothermal post-crystallization were successfully achieved under mild synthesis conditions. The membranes with higher porosity and hydrophilicity showed enhanced distribution of TiO2 nanoparticles. TiO2 membranes, especially those prepared with PVDF, exhibited high stability and photocatalytic activity in removing contaminants through adsorption and UV-LED photocatalysis.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
Berta Alcalde, Enriqueta Antico, Claudia Fontas
Summary: A polymer inclusion membrane consisting of a commercial ionic liquid and a base polymer has been used for the first time to remove fluoride from natural waters. The addition of tributyl phosphate has been found to enhance the membrane's performance. The effect of different ions and pH on the membrane's efficiency has been investigated.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Environmental Sciences
Kevin Rosales-Segovia, Jordi Sans-Duno, Encarna Companys, Jaume Puy, Berta Alcalde, Enriqueta Antico, Claudia Fontas, Josep Galceran
Summary: The uptake of nutrients or toxicants by different organisms in aquatic systems is influenced by different fractions of the nutrient or toxicant's total concentration, which can be determined by various analytical techniques with different characteristic lengths. In this study, a new representation of the pool of Zn complexes in a Mediterranean stream was obtained using four analytical techniques, providing information on free Zn concentration as well as labile fractions related to different characteristic lengths. The combination of information from these techniques allowed for the quantification of lability degrees of the Zn complexes and the establishment of an effective concentration signature for the water system.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Biochemistry & Molecular Biology
Claudia Fontas, Ruben Vera, Enriqueta Antico, Maria del Valle Martinez de Yuso, Enrique Rodriguez-Castellon, Juana Benavente
Summary: Surface characterization of polymer inclusion membranes (PIMs) containing different ionic liquids (ILs) was performed using scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The study investigated the effect of water on the membrane's morphology and composition. The results showed that immersion in ultrapure water caused changes in the surface composition of the PIMs, which may affect the reactivity of the membrane. Additionally, it was found that AlqCl was the most effective IL for arsenic (V) transport in the PIMs.
Article
Energy & Fuels
Rabea Meziani, Lynda Mitiche, Claudia Fontas, Amar Sahmoune
Summary: The study developed and characterized polymer inclusion membranes (PIMs) for efficient recovery of Bi(III) from hydrochloric acid solutions using Aliquat 336 and THTDPCl ionic liquids as carriers. The membranes showed quantitative recovery of Bi(III) and the ability to effectively separate Bi(III) from other metal ions. Stability studies demonstrated that THTDPCl provides stable membranes that can be reused multiple times.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2022)
Article
Environmental Sciences
E. Margui, I. Queralt, E. de Almeida
Summary: This review provides an overview of the applications of X-ray fluorescence instrumentation in environmental science research from 2006 to 2020. It describes the basic principles, instrumentation, and advances in the field, highlighting the potential of XRF for environmental assessment.
Article
Green & Sustainable Science & Technology
Anna Anglisano, Lluis Casas, Ignasi Queralt, Roberta Di Febo
Summary: This article explores the performance of supervised machine learning classification methods for provenancing archaeological pottery through the use of freeware R code. An illustrative example was used to show the steps and effectiveness of the new method, and the provided code and notes make it accessible for both novices and experienced users to apply and further develop.
Article
Spectroscopy
I. Queralt, S. Pessanha, M. L. Carvalho, M. Manso
Summary: In this study, the features of a modern Chinese cloisonné vase were investigated using small-spot energy dispersive X-ray fluorescence (EDXRF) and micro-Raman spectroscopy. Quantitative analysis of enamel revealed the presence of eleven different colored enamels, with chromium, manganese, iron, cobalt, copper, antimony, and cadmium identified as the main coloring agents. The body of the vase was made of copper with minor amounts of zinc and tin. Metal coatings applied for decoration were also found on the surface of the vase, with the gilded coatings consisting of a thick layer made by silver-doped nickel.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2023)
Article
Polymer Science
Ivonne Quintanilla, Carlos Perello, Francesca Merlo, Antonella Profumo, Claudia Fontas, Enriqueta Antico
Summary: Monitoring organic pollutants in environmental water bodies is vital for controlling contamination levels. This study focuses on the development of functionalised polymeric films for measuring toxic compounds. The films, made from modified cellulose triacetate and multi-walled carbon nanotubes, enable the detection of low levels of selected compounds in water samples. The method is found to be satisfactory in terms of repeatability and detection limits, and it is successfully applied to river water without significant matrix effects for certain compounds.
Article
Spectroscopy
Georgia P. Vlamaki, Nikolaos G. Kallithrakas-Kontos, Ignasi Queralt, Manuela Hidalgo
Summary: This study attempts to determine platinum in aqueous samples at low concentrations using energy-dispersive X-ray fluorescence (EDXRF) for the first time. Selective complexing membranes were used and optimized, resulting in a minimum detection limit of 4 μg/L.
X-RAY SPECTROMETRY
(2023)
Article
Geochemistry & Geophysics
Max G. Giannetta, Josep M. Soler, Ignasi Queralt, Jordi Cama
Summary: The study focuses on the Victoria Mine in the Aran Valley, examining the processes influencing metal mobility in the environment. Three sampling campaigns provide a spatiotemporal dataset showing the evolution of solute concentrations along a flow path. Rainwater dissolves ore materials, causing elevated metal concentrations, and precipitation of hydrozincite serves as a metal-removal mechanism, significantly reducing metal concentrations.
JOURNAL OF GEOCHEMICAL EXPLORATION
(2023)
Article
Geochemistry & Geophysics
Lluis Casas, Anna Anglisano, Roberta Di Febo, Berta Pedreno, Ignasi Queralt
Summary: A multi-analytical approach is usually used in provenance studies of archaeological marbles. However, for very similar marble varieties, additional techniques and approaches are needed. In this paper, a case study is conducted on two Catalan marble districts and three sets of archaeological marbles to illustrate this. The results demonstrate that supervised classification models can successfully discriminate between quarries without any special data transformation, providing valuable insights into the origin and use of these marbles.
