Article
Chemistry, Analytical
Balarabe S. Sagagi, Christine M. Davidson, Mark R. Cave, Joanna Wragg
Summary: Two non-specific sequential extraction methods utilizing chemometric data processing have been developed to determine the physicochemical partitioning of potentially harmful elements in certified reference material. The methods produced similar results, with CISED data processing identifying nine components, seven of which were of geochemical origin. These methods have potential applications in investigating the chemical speciation of PHE associated with urban airborne particular matter.
Article
Green & Sustainable Science & Technology
Yingzun He, Monika Kasina
Summary: This manuscript focuses on the sustainable utilization of municipal waste incineration ashes in construction, evaluating the mobility of heavy metals and the associated environmental contamination risk. The study highlights the importance of stringent environmental management measures for responsible utilization.
Article
Horticulture
Wenyao Shi, Yuzhu Hou, Zezhou Zhang, Xuebin Yin, Xiaohu Zhao, Linxi Yuan
Summary: This study found that the three-step sequential extraction method (aqueous solution extraction-pepsin extraction-trypsin extraction) performed the best in extracting selenium from high selenium-enriched Ganoderma lucidum, with a total selenium extraction rate of 65% and a total selenium enzymatic hydrolysis rate of 40%. The selenium speciation in this high selenium-enriched Ganoderma lucidum was determined. This study provides a reliable and efficient method to evaluate the selenium transformation and safety in high selenium-enriched edible fungi.
Review
Green & Sustainable Science & Technology
Juan Wang, Xuejing Wang, Guoxue Li, Jingtao Ding, Yujun Shen, Di Liu, Hongsheng Cheng, Ying Zhang, Ran Li
Summary: This review examines the methods for speciation analysis of heavy metals in organic fertilizers and summarizes the factors affecting their distribution. It provides guidance for optimizing the sequence extraction procedure of heavy metals in organic fertilizers.
Article
Biochemistry & Molecular Biology
Malwina Tytla, Kamila Widziewicz-Rzonca, Zuzanna Bernas
Summary: The purpose of this study was to determine the heavy metal content in different forms of sewage sludge using conventional and ultrasound-assisted sequential extraction methods. The study found that ultrasound treatment shortened the extraction time and reduced energy consumption. The results suggest that ultrasound-assisted extraction is a fast and simple method for HM fractionation and can be considered as an alternative to conventional procedures.
Article
Geochemistry & Geophysics
Axel Denys, Emilie Janots, Anne-Line Auzende, Martine Lanson, Nathaniel Findling, Nicolas Trcera
Summary: Rare earth elements (REE) speciation in laterites can be estimated through sequential extraction procedure (SEP). The evaluation of a 5-step SEP protocol on synthetic Ce-material showed good selectivity of reagents, but the use of hydroxylamine hydrochloride is not recommended due to potential dissolution of certain Ce-minerals.
Article
Chemistry, Multidisciplinary
Feipeng Li, Yue Wang, Lingchen Mao, Hong Tao, Mengmeng Chen
Summary: The study found a natural Mo background level of 0.35 mg/kg in core sediments, while surface sediments are contaminated with an average Mo concentration of 0.58 mg/kg. The highest proportion of Mo in oxidizable form is observed in the most contaminated samples.
ENVIRONMENTAL CHEMISTRY LETTERS
(2022)
Review
Environmental Sciences
Karsoon Tan, Xiaohui Cai, Kianann Tan, Kit Yue Kwan
Summary: This study comprehensively reviewed the presence of radionuclides in marine bivalves. It was found that bivalves have the ability to accumulate high levels of radionuclides, but the accumulation varies in different species and tissues. Most radionuclides enter the bivalves through the trophic pathway, while some others are absorbed along with other minerals and selectively accumulate in the shells. The information from this study provides an overview of radionuclide contamination in marine bivalves.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Gauthier J. -P. Deblonde, Keith Morrison, Joseph A. Mattocks, Joseph A. Cotruvo, Mavrik Zavarin, Annie B. Kersting
Summary: Minor actinides play a significant role in the radiotoxicity of nuclear fuels and radioactive wastes. Understanding their interactions with natural chelators and minerals is crucial for evaluating their transport behavior in the environment.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Chemical
Yan Wang, Aaron Noble, Christopher Vass, Paul Ziemkiewicz
Summary: Studies on acid mine drainage precipitates from three treatment sites in Northern and Central Appalachia showed that rare earth elements were mainly found in soluble phases bound to Fe-Mn oxides. Different chemical characteristics and treatment approaches can lead to substantial variation in the distribution of rare earth elements. Further testing is needed to determine the overall economic viability.
MINERALS ENGINEERING
(2021)
Review
Chemistry, Analytical
Swadesh Mandal, Susanta Lahiri
Summary: Cloud point extraction (CPE) is a greener alternative to conventional separation techniques in the field of analytical chemistry. This article provides an overview of various aspects of CPE and its recent developments, focusing on the extraction and speciation of metal ions and anionic species. The article also briefly discusses the extraction and determination of nanoparticles by CPE.
MICROCHEMICAL JOURNAL
(2022)
Article
Environmental Sciences
Muhammad Waris, Jameel Ahmed Baig, Tasneem Gul Kazi, Hassan Imran Afridi, Farah Maqsood
Summary: The research presents a new Microwave induced single-step extraction (MSE) method to analyze the chemical fractionation of cadmium (Cd), chromium (Cr), and lead (Pb) in saline soil samples of Hyderabad, Pakistan. The MSE method showed satisfactory results in terms of experimental efficiency and accuracy when compared with the BCR-CSE method.
ENVIRONMENTAL EARTH SCIENCES
(2021)
Article
Environmental Sciences
Amanda Jo Zimmerman, Danira Garcia Gutierrez, Negar Shaghaghi, Aakriti Sharma, Amrika Deonarine, Gautier Landrot, David C. Weindorf, Matthew G. Siebecker
Summary: This study systematically investigates the mobility of arsenic-enriched titanium dioxide water treatment residuals (TiO2 WTRs), and finds that a significant portion of arsenic can be extracted when exposed to phosphate solutions. Macroscopic desorption experiments and X-ray absorption spectroscopy (XAS) confirm the formation of inner-sphere bonds between arsenic and TiO2 particles. Additionally, incubation experiments reveal the reduction of arsenic(V) to arsenic(III) in solution. The high mobility of arsenic and the potential for reduction present important risks, particularly in agriculturally important areas where waste products are not properly managed.
ENVIRONMENTAL POLLUTION
(2023)
Editorial Material
Chemistry, Multidisciplinary
Tova N. Williams
Summary: The article explores the history, components, and terminology of madder, a well-known source of red color, which can be confusing for some.
Article
Engineering, Chemical
Evgeny E. Tereshatov, Jonathan D. Burns, Amy L. Vonder Haar, Steven J. Schultz, Lauren A. McIntosh, Gabriel C. Tabacaru, Laura A. McCann, Geoffrey Avila, Andrew Hannaman, Kylie N. Lofton, Mallory A. McCarthy, Bowen Zhang, Michael B. Hall, Sherry J. Yennello
Summary: A detailed study has been conducted on the extraction of Bi and At from nitric acid media into conventional solvents, with a mathematical modeling used to fit experimental data and determine extraction and stability constants. A computational study was also performed to evaluate At interaction with the solvents.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Environmental Sciences
Manuel Contreras Llanes, Maximina Romero Perez, Manuel Jesus Gazquez Gonzalez, Juan Pedro Bolivar Raya
Summary: The study showed that using up to 50% of recycled aggregates from construction and demolition waste is feasible for manufacturing eco-friendly concrete, and can also be used to produce paving blocks that meet industrial standards. By reducing cement incorporation, production costs were saved and environmental impact minimized.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Physical
E. Cuesta, A. Barba-Lobo, R. L. Lozano, E. G. San Miguel, F. Mosqueda, J. P. Bolivar
Summary: The study investigates three alternative methods for measuring the 210Pb levels in environmental samples and examines their precision, linearity, and proportionality. The results show that there were no significant differences in the measurements obtained by the three methods, with alpha-particle spectrometry providing the highest precision but also being more expensive and time-consuming.
RADIATION PHYSICS AND CHEMISTRY
(2022)
Article
Multidisciplinary Sciences
Patricia Gomez-Villegas, Jose Luis Guerrero, Miguel Perez-Rodriguez, Juan Pedro Bolivar, Javier Vigara, Rosa Leon
Summary: This study provides the first description of prokaryotic and eukaryotic diversity in the phosphogypsum stacks of Huelva, Spain, and presents sequencing data and taxonomic assignments.
Article
Marine & Freshwater Biology
Patricia Gomez-Villegas, Jose Luis Guerrero, Miguel Perez-Rodriguez, Juan Pedro Bolivar, Antonio Morillo, Javier Vigara, Rosa Leon
Summary: This study investigated the microbial community in phosphogypsum (PG) deposits in Huelva, Spain and identified a diverse range of microbial species that can thrive in the extreme acidic and polluted environment. The study also discovered the presence of algae, fungi, and ciliates in the PG stacks. The findings suggest that the microbial community in these PG deposits may play a significant role in the dynamics of contaminating compounds and have potential for biotechnological applications.
AQUATIC TOXICOLOGY
(2022)
Article
Meteorology & Atmospheric Sciences
J. A. Adame, I Gutierrez-Alvarez, P. Cristofanelli, A. Notario, J. A. Bogeat, A. Lopez, A. Gomez, J. P. Bolivar, M. Yela
Summary: This study analyzed the trends of near-surface ozone concentration measured at El Arenosillo observatory in Southwestern Europe over a period of 21 years. The results showed that there is an overall upward trend in ozone concentration, particularly during cold seasons and nighttime. Factors such as temperature and atmospheric pressure were found to influence the ozone concentration, while reductions in emissions had a negative impact on ozone formation during warm seasons and daytime. Further research is needed to explore other processes contributing to the observed upward trend.
ATMOSPHERIC RESEARCH
(2022)
Article
Environmental Sciences
Ricardo Millan-Becerro, Francisco Macias, Carlos R. Canovas, Rafael Perez-Lopez, Jose M. Fuentes-Lopez
Summary: A phosphogypsum stack in SW Spain releases acidic and contaminated leachates into the surrounding estuarine environment. Column experiments using alkaline reagents dispersed in an inert matrix showed high effectiveness in treating the leachates. Precipitation of phosphate and sulfate minerals helped control the solubility of contaminants. Standardized leaching tests classified the waste as hazardous according to EU regulations, but non-hazardous according to US legislation. The solids generated in the treatment systems could be a promising secondary source for calcite and/or phosphate.
Article
Geochemistry & Geophysics
Alejandro Barba-Lobo, Manuel Jesus Gazquez, Juan Pedro Bolivar
Summary: This article discusses the measurement methods of radioactive materials related to NORMs control in industries such as mining, and emphasizes the importance of calculating the radioactive index and using both alpha and gamma spectrometric techniques for accurate measurements.
Article
Environmental Sciences
Carlos Ruiz Canovas, Maria Dolores Basallote, Francisco Macias, Remi Freydier, Annika Parviainen, Rafael Perez-Lopez
Summary: This study investigates the behavior of Tl in the Ria de Huelva in SW Spain. The dissolved Tl concentration decreases across the estuary during both the dry and wet seasons. Unlike other estuaries, Tl is mainly desorbed from particulate matter in this area and released back into the water column due to the increasing salinity. Mining spills can contribute to higher Tl concentrations and enhance these desorption processes.
ENVIRONMENTAL POLLUTION
(2022)
Article
Geosciences, Multidisciplinary
Carlos R. Canovas, Maria Dolores Basallote, Francisco Macias, Manuel Olias, Rafael Perez-Lopez, Jose Miguel Nieto
Summary: The study found that during sulfide oxidation processes, thallium is mobilized from sulfides, leading to an enrichment of thallium in acid mine drainage leachates, while the precipitation of secondary minerals may serve as a sink for thallium.
EARTH-SCIENCE REVIEWS
(2022)
Article
Chemistry, Analytical
Manuel Jesus Gazquez, Daniela Carolina Paz Gomez, Jose Juan Alonso, Silvia Maria Perez-Moreno, Inmaculada Ramos-Lerate, Melquiades Casas-Ruiz, Juan Pedro Bolivar
Summary: This report presents a new methodology to isolate and measure 210Po, uranium, and thorium isotopes, which reduces the time and chemical reagents used compared to standard procedures. The method has been validated using samples of various activities and materials.
Article
Engineering, Environmental
J. L. Guerrero, N. Suarez-Vaz, D. C. Paz-Gomez, S. M. Perez-Moreno, J. P. Bolivar
Summary: The study evaluated the spatiotemporal evolution of U and Th isotopes in a contaminated mine effluent caused by acid mine drainage. The acidic tributary, originating from an abandoned sulfide mine, flows into the Odiel River. The mine effluent has significantly elevated concentrations of 238U and 232Th compared to background values. These natural radionuclides behave conservatively throughout the hydrological year under the acidic conditions. The polluted tributary acidifies the Odiel River and increases the activity concentrations of U and Th isotopes.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Nuclear Science & Technology
M. Sangiorgi, M. A. Hernandez-Ceballos, J. P. Bolivar
Summary: JRODOS simulated the dispersion of airborne radioactive material from a point source from 2012 to 2015. The study found that changes in meteorological conditions can affect the performance of monitoring networks. The results showed seasonal differences in the number of affected monitoring stations, first detection time, and maximum registered values. These findings highlight the importance of considering this type of analysis in the design of monitoring networks and nuclear emergency preparedness and response plans.
PROGRESS IN NUCLEAR ENERGY
(2023)
Article
Environmental Sciences
R. Padilla, J. A. Adame, P. J. Hidalgo, J. P. Bolivar, M. Yela
Summary: This study used carbon monoxide (CO) observations from El Arenosillo observatory in Southwest Europe to explore levels, variations, and patterns. The results showed that CO concentrations fluctuated seasonally between 127 +/- 21 and 97 +/- 14 ppb, with extreme peaks during wildfire plume arrival. Monthly evolution revealed higher peaks in cold months (135 +/- 20 ppb in January) and lower levels in summer (90 +/- 11 ppb in June). The study also investigated potential trends and found a downward trend in emissions, counteracted by other processes.
ATMOSPHERIC ENVIRONMENT
(2023)
Article
Chemistry, Analytical
Sergio Carrero, Alejandro Fernandez-Martinez, Rafael Perez-Lopez, Jordi Cama, Catherine Dejoie, Jose Miguel Nieto
Summary: This study investigates the impact of aluminum incorporation on the removal capacity of toxic oxyanions by Schwertmannite in AMD and ASS. The results show limited Al accumulation in Schwertmannite with little effect on its structure. The maximum arsenate sorption capacity is comparable to pure Schwertmannite, but higher proportions of inner-sphere coordination are observed. Additionally, Al can desorb from Schwertmannite, but adsorbed arsenate prevents this effect and increases the stability of the mineral.
ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS
(2022)
