Article
Food Science & Technology
Lena Ruzik, Malgorzata Jakubowska
Summary: The popularity of plant-based food products has grown in response to the increasing demand for plant foods. This study analyzed the total arsenic content and its species in plant-based beverages purchased in Poland. The research validated a method for analyzing arsenic using high-performance liquid chromatography combined with inductively coupled plasma mass spectrometry.
Article
Chemistry, Analytical
C. Derrick Quarles, Patrick Sullivan, Nick Bohlim, Nathan Saetveit
Summary: This study presents two fast and reliable separation methods for arsenic compounds. The recovery rate of both methods falls between 94% and 107%, and the accuracy was evaluated by analyzing proficiency samples. The detection limits in urine matrix for the two methods ranged from 2.8-6.0 ng L-1 As and 4.1-9.1 ng L-1 As, respectively.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2022)
Article
Chemistry, Analytical
Maria Vanesa Taboada-Lopez, Dorota Bartczak, Susana Cuello-Nunez, Heidi Goenaga-Infante, Pilar Bermejo-Barrera, Antonio Moreda-Pineiro
Summary: A method using AF4 coupled with UV-vis and ICP-MS has been developed for detecting and quantifying Ag NPs in bivalve molluscs, showing an interaction between Ag NPs and proteins, as well as different size distributions of Ag NPs in selected samples. Confirmation of Ag NPs presence in enzymatic extracts was demonstrated by SEM after an oxidative pre-treatment.
Article
Environmental Sciences
Marina Vidosavljevic, Dinko Puntaric, Vlatka Gvozdic, Domagoj Vidosavljevic, Dragana Juric, Lidija Begovic
Summary: This study assessed the arsenic content in human hair in selected areas of eastern Croatia and compared them with measured values after the installation of a new water supply system. The results showed a significant reduction in hair arsenic concentrations after changing the water source.
Article
Chemistry, Multidisciplinary
Manuel D. Montano, Chad W. Cuss, Haley M. Holliday, Muhammad B. Javed, William Shotyk, Kathryn L. Sobocinski, Thilo Hofmann, Frank von der Kammer, James F. Ranville
Summary: Nanogeochemistry is a burgeoning field that investigates the role of nanoparticles in Earth systems. By utilizing engineered nanotechnology and advanced analytical techniques such as ICP-TOF-MS and AF4-ICP-MS, researchers can study the mechanisms and processes of nanogeochemistry. This study specifically focuses on the isotopic and elemental ratios of individual nanoparticles and the importance of suspended Fe and Mn in the speciation of Pb. The combination of spICP-TOF-MS and AF4-ICP-MS offers a powerful tool for exploring the colloid facilitated transport of trace elements.
ACS EARTH AND SPACE CHEMISTRY
(2022)
Article
Engineering, Environmental
N. E. Nieva, M. G. Garcia, L. Borgnino, L. G. Borda
Summary: The evaporation of As-rich leachates from sulfide-rich mine wastes in La Concordia mine leads to the formation of saline crusts and efflorescences, which may release high concentrations of arsenic after rainfall. The solid speciation of As in these efflorescences is mainly in the form of As(V) and depends on the mineralogical composition of salts, with copiapite showing the highest capacity to retain arsenic. Copiapite, as a transient reservoir of arsenic, can release high concentrations of this hazardous pollutant during occasional rainfall events.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Analytical
Vladimir N. Losev, Svetlana L. Didukh-Shadrina, Anastasia S. Orobyeva, Sergey I. Metelitsa, Elena V. Borodina, Urana V. Ondar, Pavel N. Nesterenko, Natalia V. Maznyak
Summary: A simple and efficient method for the determination of highly toxic arsenic species using noncovalently aminated silica was proposed. The method allows for the effective preconcentration of arsenic anionic species from aqueous solutions, with separate preconcentration and determination of As(V) and As(III) at pH 5.
ANALYTICA CHIMICA ACTA
(2021)
Article
Environmental Sciences
Antonino Spanu, Ilaria Langasco, Francesco Barracu, Mario Antonello Deroma, Jose Fermin Lopez-Sanchez, Andrea Mara, Paola Meloni, Maria Itria Pilo, Nadia Spano, Gavino Sanna
Summary: This study aimed to investigate the influence of different irrigation methods on the speciation of arsenic in rice and measure the concentrations of As(III), As(V), DMA, and MMA in different rice genotypes. The results showed that the concentrations of As(III) and DMA were roughly equal in rice irrigated with continuous flooding, only As(III) was found in rice irrigated with periodic saturation, and As(V) was predominantly present over As(III) in rice irrigated with sprinkler irrigation. Organic arsenic species were below the limits of detection in rice irrigated by intermittent methods. Principal component analysis also revealed significant differences in arsenic speciation as a function of rice genotype.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Chemistry, Multidisciplinary
Marinos Stylianou, Etienne Montel, Andreas Zissimos, Irene Christoforou, Konstantinos Dermentzis, Agapios Agapiou
Summary: The present study investigates the efficiency of the electrocoagulation process on removing heavy metals from real acid mine drainage samples. The results show that the EC process effectively removes heavy metals, but the treatment time may vary.
SUSTAINABLE CHEMISTRY AND PHARMACY
(2022)
Article
Biochemistry & Molecular Biology
Syed Muhammad Shoaib, Samina Afzal, Ali Feezan, Muhammad Sajid Hamid Akash, Ahmed Nadeem, Tahir Maqbool Mir
Summary: Our study investigated the effects of arsenic-induced metabolic disorders, specifically disruptions in lipid metabolism, amino acid metabolism, and carbohydrate metabolism. We also assessed the potential therapeutic effects of resveratrol as a remedy for arsenic-induced diabetes. The findings showed significant changes in glucose levels, insulin resistance, inflammatory biomarkers, and liver and kidney function in mice exposed to arsenic. Additionally, enzyme levels related to carbohydrate metabolism and oxidative stress biomarkers were reduced in the arsenic-exposed group. The study also observed alterations in gene expression related to lipid and carbohydrate metabolism, as well as decreases in certain amino acids in arsenic-exposed mice. Metabolomics analysis identified disruptions in lipid metabolomes, amino acids, and arsenic metabolites. Histopathological observations revealed significant changes in liver architecture in the arsenic-exposed group.
Article
Chemistry, Analytical
Fen Yang, Shaowen Xie, Zhenzhen Yu, Hanxiao Feng, Chaoyang Wei
Summary: This study investigated the arsenic concentrations and species in home-grown cage-free chickens collected from residents' backyards near the Shimen Realgar Mine in Hunan province, China. The predominant form of arsenic found in the chicken's muscle, stomach, liver, heart, and eggs was dimethylarsinic acid (DMA). Inorganic arsenic was the main species in the stomach skin, gastric contents, and feathers. Additional information about non-extractable and unidentified forms of arsenic was obtained through X-ray absorption near edge structure analysis. Overall, the estimated daily intake of arsenic from consuming chicken raised near the realgar mine was acceptable, and the corresponding hazard quotient values indicated minimal health risks for consumers.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Applied
Semih Kara, Dotse Selali Chormey, Ahmet Saygilar, Sezgin Bakirdere
Summary: This study utilized a combination of high-performance liquid chromatography and inductively coupled plasma mass spectrometry (HPLC-ICP-MS) to separate and quantify six arsenic species. The method demonstrated high sensitivity and accuracy, with limits of detection ranging between 0.14-0.29 ng/mL. Spike recovery experiments on rice samples validated the method's applicability to complex matrices, with recovery results ranging between 93 and 109%. Triplicate measurements on all spiked samples recorded percent relative standard deviation values below 10%, indicating the reliability and precision of the method.
Article
Environmental Sciences
Jojo Tibon, Heidi Amlund, Ana Gomez-Delgado, Marc H. G. Berntssen, Marta S. Silva, Martin Wiech, Jens J. Sloth, Veronika Sele
Summary: This study conducted detailed arsenic speciation analysis of mesopelagic organisms in Norwegian fjords, revealing that the dominant form was the nontoxic arsenobetaine, while considerable fractions of potentially toxic arsenolipids were found in the biomass.
Article
Chemistry, Analytical
Xinyu Wang, Zhao Qian, Haitao Li, Hongzhu Chen, Liwang Lin, Meihua Guo, Xin Hai
Summary: The study evaluated the levels and distributions of arsenic species in leukocytes and granulocytes of APL patients, and found that iAs was the predominant arsenic species throughout the treatment process, suggesting a dominant therapeutic role of iAs in APL treatment.
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
(2021)
Article
Food Science & Technology
Xin Zheng, Jing Hong, Jingyi Zhang, Yulong Gao, Peng Li, Jian Yuan, Guanglei Li, Changrui Xing
Summary: Rice grains were found to have higher levels of total arsenic compared to other crops. Arsenite (As(III)) was found to be twice as high as arsenate (As(V)) in polished and brown rice. The accumulation of arsenic between the husk and the endosperm was identified as the main source of arsenic in rice bran.
Article
Biochemical Research Methods
Ana C. Gimenez-Ingalaturre, Khaoula Ben-Jeddou, Josefina Perez-Arantegui, Maria S. Jimenez, Eduardo Bolea, Francisco Laborda
Summary: SP-ICP-MS is widely used for obtaining information about nanoparticles in liquid suspensions, but lacks clear quality control strategies. Detection of complete size distribution is necessary for unbiased quantitative information. An approach based on size critical values and dilutions is proposed for the assessment of validity of quantitative information obtained.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2023)
Article
Engineering, Environmental
Ian Byrnes, Lisa Magdalena Rossbach, Jakub Jaroszewicz, Daniel Grolimund, Dario Ferreira Sanchez, Miguel A. Gomez-Gonzalez, Gert Nuyts, Estela Reinoso-Maset, Koen Janssens, Brit Salbu, Dag Anders Brede, Ole Christian Lind
Summary: Micro- and nanoscopic X-ray techniques were used to investigate the relationship between uranium tissue distributions and adverse effects on the digestive tract of Daphnia magna. The study showed that exposure to uranium nanoparticles (UNPs) resulted in adverse morphological changes to the midgut and hepatic ceca, as well as abnormal intestinal epithelial cells. High-resolution nano-XRF identified U particulates throughout the midgut and within hepatic ceca cells, coinciding with tissue damages. These findings highlight the importance of disrupted intestinal function as a mode of acute U toxicity in D. magna.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
G. D. Soria, A. Serrano, J. E. Prieto, A. Quesada, G. Gorni, J. de la Figuera, J. F. Marco
Summary: We investigated the influence of the annealing treatment on the crystalline growth of previously deposited SrFe12O19 films on Si (100) substrates by RF magnetron sputtering. The results showed that the as-grown film consisted of nanocrystalline maghemite nanoparticles and amorphous strontium oxide, while the annealed film exhibited a strontium hexaferrite canonical structure with a c-axis orientation. The findings were obtained through various analysis techniques, including Mossbauer spectroscopy, EXAFS, and XANES data.
JOURNAL OF MATERIALS RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
P. G. de la Iglesia, O. Garcia-Moreno, J. L. Menendez, R. Torrecillas, J. F. Marco
Summary: Calcium hexaluminate forms solid solutions with magnetic ions, allowing for the design of magnetic behavior based on composition. In this study, various synthesis methods of calcium hexaluminate with iron were investigated to determine the maximum percentage of iron that can exhibit magnetic behavior.
JOURNAL OF MATERIALS RESEARCH
(2023)
Article
Engineering, Chemical
Nicolas Soto-Donos, Lidia Favier, Sandra Fuentes Villalobos, Veronica Paredes-Garcia, Thierry Bataille, Jose F. Marco, Raluca Maria Hlihor, Eric Le Fur, Diego Venegas-Yazigi
Summary: This study successfully synthesized a new composite named TiO2@La(OH)2Cl using a sol-gel and hydrothermal route. The composite consists of micrometric platelets of La(OH)2Cl covered by c.a. 10 nm TiO2 anatase nanoparticles. The composite exhibited excellent photocatalytic activity compared to pure anatase and pure La(OH)2Cl, showing the positive role of the synergy between the two solids. The composite was also effective in degrading cetirizine and showed low toxicity in phytotoxicity investigations. These findings demonstrate the excellent catalytic efficiency and potential applications of the new synthesized material for water purification.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2023)
Article
Geology
Javier Garcia-Guinea, Fernando Gervilla, Fernando Garrido, Virgilio Correcher, Jose F. Marco, Laura Tormo
Summary: Antimony ochres are yellowish antimony oxo-hydroxides formed by the weathering of Stibnite (Sb2S3). They have a pyrochlore-type structure and contain Ca and water molecules. Due to their chemical variability and similar X-ray diffraction patterns, additional techniques are needed to distinguish between different minerals. This study characterizes the antimony ochres from Cervantes (Spain) and Brasina (Serbia) by analyzing their chemical composition, structure, thermal properties, and speciation using techniques such as X-ray diffraction, Raman spectroscopy, FTIR, and XPS.
ESTUDIOS GEOLOGICOS-MADRID
(2023)
Article
Chemistry, Multidisciplinary
Jose F. Marco, Juan Z. Davalos-Prado, Drahomir Hnyk, Josef Holub, Ofelia B. Ona, Diego R. Alcoba, Maxime Ferrer, Jose Elguero, Luis Lain, Alicia Torre, Josep M. Oliva-Enrich
Summary: High-level quantum-chemical computations were performed in combination with Mo??ssbauer and X-ray photoelectron spectroscopies to investigate the geometric and electronic structure of the paramagnetic salt [Fe(1,2-C2B9H11)2]Cs = FeSanCs. Comparisons between experimental 57Fe isomer shifts and quadrupole splitting parameters and theoretical predictions showed good agreement. The presence of two sets of Cs(3d) doublets in the XPS spectrum indicated the existence of two different chemical environments for Cs due to the easy movement of the Cs(+) cation around the sandwich complex.
Article
Nanoscience & Nanotechnology
Pamela M. Sepulveda, Sebastiain A. Campos, Wendy Calzadilla, Jose F. Marco, Juliano C. Denardin, Ricardo A. Salazar-Gonzalez
Summary: In this study, Fe2O3-Ni, Fe2O3-Ni-Pd, MgO-Ni, and MgO-Ni-Pd nanoparticles were synthesized and used for the degradation of florfenicol (FLO). The degradation mechanisms of FLO using Fe2O3-Ni and MgO-Ni nanocatalysts were compared, and the effect of Pd incorporation on the degradation processes was evaluated. The results showed that the degradation of FLO was mainly achieved through the heterogeneous photo-Fenton process, with Fe2O3-Ni and MgO-Ni nanocatalysts achieving 78% and 44% removal of the antibiotic, respectively. The incorporation of Pd improved the degradation efficiency by 22%. Organic intermediates produced during the degradation were identified, and a degradation pathway was proposed. These findings suggest that heterogeneous Fenton and photo-Fenton processes using nanoparticles as catalysts are a promising method for the degradation of FLO in water.
ACS APPLIED NANO MATERIALS
(2023)
Article
Materials Science, Ceramics
O. Madkhali, Umit H. Kaynar, Y. Alajlani, M. B. Coban, J. Garcia Guinea, M. Ayvacikli, J. F. Pierson, N. Can
Summary: GdAl3(BO3)4:Dy3+, Sm3+, Eu3+, and Tb3+ samples were successfully prepared via a sol-gel combustion method. The XRD analysis confirmed the formation of the desired GAB host with rhombohedral structures. FTIR analyses detected B -O stretching, B -O -B bending, Al -O bonds, and Gd -O bonds in the phosphor samples. EDS analysis showed successful doping of Sm, Eu, Dy, and Tb into GdAl3(BO3)4. The luminescence properties of rare earth ion-doped GdAl3(BO3)4 samples were analyzed, revealing optimal doping concentrations and critical distances for each ion.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
N. Can, M. B. Coban, G. Souadi, Umit H. Kaynar, M. Ayvacikli, J. Garcia Guinea, E. Ekdal Karali
Summary: This study successfully synthesized ZrO2:Dy3+ phosphors with the incorporation of K+ ions and comprehensively characterized them. The introduction of Dy3+ and K+ ions in the ZrO2 lattice enhances the luminescence intensity and shows remarkable enhancement at lower temperatures. These properties make it a promising candidate for white light-emitting diodes and high-quality lighting applications.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Mickella Dawkins, David Saal, Jose F. Marco, James Reynolds, Sandra Dann
Summary: Experiments on the catalytic pyrolysis of methane using an iron ore-based catalyst were conducted to optimize catalytic activity and examine the purity of the carbon produced. The effect of ball milling the iron ore for different times (from 30 to 330 min) at 300 rpm on methane conversion was studied. Optimal milling for 270 min resulted in a significant increase in methane conversion to 5%, but further grinding led to a decline in conversion to 4% due to particle agglomeration.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Alvaro Tolosana-Moranchel, Alvaro Garcia, Alvaro Garcia-Corral, Jose F. Marco, L. Pascual, Dalia Liuzzi, Mohamed A. Salam, Pilar Ferrer, Jorge Torrero, David C. Grinter, Georg Held, Daniel Garcia Sanchez, K. Andreas Friedrich, Maria Retuerto, Sergio Rojas
Summary: The overall performance of proton exchange membrane fuel cells is limited by the sluggish kinetics of the oxygen-reduction reaction (ORR). Among the most active PGM-free ORR electrocatalysts are metal-nitrogen-carbon (M-N-C), such as Fe-N-C. In this work, a Fe/N/C catalyst was synthesized via thermal treatment of a polymeric CxNy precursor obtained by the wet-polymerization of melamine (a nitrogen rich molecule) and terephthaldehyde, and it displayed high ORR activity in acid electrolyte compared to other Fe-N-C catalysts.
JOURNAL OF POWER SOURCES
(2023)
Article
Spectroscopy
C. Boronat, V. Correcher, J. C. Bravo-Yague, I. Sarasola-Martin, J. Garcia-Guinea, J. F. Benavente
Summary: This paper presents the luminescence characterization of various dosimeters exposed to different types of radiation. The dosimeters show high sensitivity to both ionizing and partially ionizing radiation based on their luminescence properties. The chemical compositions of the dosimeters significantly affect their cathodoluminescence emission, and the dopant in CaF2 dosimeters leads to different luminescence spectra. The variation in thermoluminescence glow curves allows for discrimination between dosimeters exposed to beta and UVC radiation.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Multidisciplinary Sciences
Miguel A. Gomez-Gonzalez, Tatiana Da Silva-Ferreira, Nathaniel Clark, Robert Clough, Paul D. Quinn, Julia E. Parker
Summary: In recent decades, the production of engineered nanomaterials has increased significantly, leading to their release in the environment. Zinc oxide (ZnO) is widely used due to its advantageous properties, but its fate in aquatic media is still unknown. This study confirms the adsorption of ZnO nano/microstructures onto polystyrene surfaces within 24 hours. The transformation of ZnO into Zn-sulfide and Zn-phosphate after aging in different environmental media is also observed. The relevance of this work is highlighted by studying the interaction between ZnO-based sunscreen and microplastics, revealing the adsorption of transformed Zn-species. Understanding the impacts and fate of microplastics/ZnO complexes is crucial for predicting their behavior in the environment.
Article
Chemistry, Physical
Alexander J. Mayer, Owain T. Beynon, Andrew J. Logsdail, K. G. Upul Wijayantha, Sandra E. Dann, Jose F. Marco, Joshua D. Elliott, Matteo Aramini, Giannantonio Cibin, Simon A. Kondrat
Summary: In this study, we investigated the speciation of potassium within Prussian blue during cyclic voltammetry using operando potassium K-edge XANES analysis. It was found that potassium ions are located within the channels of the Prussian blue structure but are displaced towards the periphery of the channels by occluded water and/or structural water. These findings demonstrate the potential of XANES to directly study the nature and evolution of potassium species during electrochemical processes.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)