Article
Chemistry, Analytical
Daisuke Kozaki, Masanobu Mori, Shinichi Hamasaki, Tomotaka Doi, Souma Tanihata, Atushi Yamamoto, Takeshi Takahashi, Koutarou Sakamoto, Shigeto Funado
Summary: A simple method using enclosed quartz cell and cold vapour-atomic absorption spectrometry is proposed for determining total inorganic mercury in solution, achieving similar precision to conventional methods while reducing sample volume, reductant, and cost.
ANALYTICAL METHODS
(2021)
Article
Chemistry, Applied
Fernanda Garcia de Almeida, Milena do Prado Ferreira, Mariana Gava Segatelli, Alexandra Beal, Wilma Aparecida Spinosa, Fabio Antonio Suquila Cajamarca, Cesar Ricardo Teixeira Tarley
Summary: A solid phase preconcentration method for cobalt determination at trace levels was developed using a cross-linked polymer as an efficient adsorbent, achieving high sensitivity and recoveries ranging from 91-104% in different samples.
REACTIVE & FUNCTIONAL POLYMERS
(2021)
Article
Chemistry, Multidisciplinary
Elena Pavoni, Efren Garcia-Ordiales, Stefano Covelli, Pablo Cienfuegos, Nieves Roqueni
Summary: At the Nalon River estuary in Northern Spain, the distribution and partitioning behavior of Hg and MeHg in the water column were studied, showing the influence of river discharge and tidal currents on the prevalence of dissolved and particulate Hg under different seasonal conditions. Particulate MeHg was found to prevail when river flow was low, especially at the estuary mouth, possibly due to resuspension of fine particles caused by strong tidal currents. Compared to total Hg concentration, extremely low amounts of dissolved and particulate MeHg were observed, with strong interactions between MeHg and organic carbon indicating a minimal risk of increased mobility and potential bioaccumulation of MeHg.
APPLIED SCIENCES-BASEL
(2021)
Review
Instruments & Instrumentation
Haiyan Yang, Rui Jian, Jing Liao, Jie Cui, Ping Fang, Zhirong Zou, Ke Huang
Summary: Understanding the content of inorganic and organic mercury in organisms or the environment requires speciation analysis. Traditional chromatographic methods coupled with atomic spectrometry have been commonly used, but non-chromatographic atomic spectroscopy methods have also been developed as efficient alternatives in recent years. These methods offer advantages such as time saving, cost-effectiveness, and high detection power compared to chromatographic techniques.
APPLIED SPECTROSCOPY REVIEWS
(2022)
Article
Chemistry, Multidisciplinary
Thuong Thi Kim Nguyen, Huyen Thu Luu, Loi Duc Vu, Thao Thi Ta, Giang Thi Huong Le
Summary: The anodic stripping voltammetry (ASV) method with a gold electrode was successfully applied for determining total mercury in solid samples. Under optimal conditions, the method showed good accuracy and reproducibility for determining total mercury content.
JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Jinshun Cang, Weixi Gu, Yuheng Zhang, Xiashi Zhu
Summary: This study developed a magnetic solid extractant coated with amino acid ionic liquid and graphene oxide for the speciation analysis of Cr(iii) and Cr(vi) in water samples using ICP-OES. The method showed good linear ranges and detection limits under optimal conditions, and its effectiveness was validated through quantitative analysis of environmental water samples. This method reveals promising potential in the field of environmental remediation.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Analytical
Yifeng He, Man He, Beibei Chen, Bin Hu
Summary: A novel Fe3O4@BD-TpMA-S-SH MOP was synthesized as a magnetic solid-phase extraction sorbent for mercury speciation, displaying high sensitivity, low LOD, high EF, fast adsorption/desorption kinetics, and successful application in trace mercury speciation in environmental water and fish samples.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2021)
Article
Engineering, Environmental
Zhimou Cui, Xiaohong Shi, Shengnan Zhao, Junping Lu, Zhiqiang Tian, Hao Zhang, Xin Guo, Yanjun Wang
Summary: This study aimed to understand the occurrence of mercury in the water environment of typical cold and arid lakes and the regulating environmental factors. The results showed that the concentrations of total mercury (THg) and total methylmercury (TMeHg) in Wuliangsuhai Lake water were higher than environmental quality standards. The factors affecting mercury speciation in water were identified as salinity, total dissolved solids, conductivity, and redox potential. The study also found that reducing human activities and the use of mercury-rich substances are necessary to address mercury pollution.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2023)
Review
Chemistry, Multidisciplinary
Bashdar Abuzed Sadee, Yaseen Galali, Salih M. S. Zebari
Summary: The speciation of arsenic is important due to its varying toxicity depending on its chemical form. Long-term exposure to arsenic can have severe health effects. Various methods and techniques have been developed to identify arsenic species in vegetation samples, including extraction, separation, and detection techniques.
Article
Biochemistry & Molecular Biology
Yesica Vicente-Martinez, Maria Jose Munoz-Sandoval, Manuel Hernandez-Cordoba, Ignacio Lopez-Garcia
Summary: Due to the toxicity of mercury, it is necessary to implement analytical procedures that can quantify the different forms of mercury in the environment, even at low concentrations. Additionally, it is desirable for the procedures to distinguish between these forms due to their various environmental and health consequences. This study proposes a dispersive solid-phase microextraction method using a magnetic hybrid material formed by graphene oxide and ferrite (Fe3O4@GO) as the adsorbent, followed by determination using electrothermal atomic absorption spectrometry (ETAAS).
Article
Chemistry, Analytical
J. C. Garcia-Mesa, P. Montoro-Leal, S. Maireles-Rivas, M. M. Lopez Guerrero, E. Vereda Alonso
Summary: Mercury is a toxic non-essential trace element that can bioaccumulate in humans. A ferrofluid-based MDSPE method combined with FI-CV-GFAAS was developed for the determination of ultra-trace amounts of Hg(ii) in biological and environmental samples, showing high sensitivity and accuracy.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2021)
Article
Chemistry, Analytical
Jana Thissen, Martin D. Klassen, Philipp Constantinidis, Michael C. Hacker, Joerg Breitkreutz, Thorsten Teutenberg, Bjoern Fischer
Summary: This study demonstrates the successful assessment of the higher-order structure of proteins using the online coupling of size exclusion chromatography and capillary enhanced Raman spectroscopy. The method also allows for the quantitative detection of the stabilizing excipient sucrose.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Yaru Zhang, Xuefei Mao, Di Tian, Jixin Liu, Chunsheng Li
Summary: A novel method using low-cost miniaturized hydride generation optical emission spectrometry equipment coupled with an in situ dielectric barrier discharge trap was developed for the determination of As in edible seaweed samples. The method significantly improved the linear range and sensitivity, with a detection limit of 0.2 μg L-1. Application of the method to seaweed samples yielded a method detection limit of 0.25 mg kg(-1) with good accuracy and precision.
ANALYTICAL METHODS
(2021)
Article
Biochemistry & Molecular Biology
Maryam Doroudian, Michelle E. Thibault, Juergen Gailer
Summary: The anthropogenic release of Hg is associated with an increased human exposure risk. This study investigated the competitive interactions of mercurials with L-glutathione (GSH) and N-acetylcysteine (NAC) using a liquid chromatographic approach. The results revealed the presence of coordination/displacement of GS-moieties from each mercurial by NAC, explaining their retention behavior.
Article
Chemistry, Analytical
Lin Yang, Ben Yu, Hongwei Liu, Xiaomeng Ji, Cailing Xiao, Yong Liang, Ligang Hu, Yongguang Yin, Jianbo Shi, Guibin Jiang
Summary: A sensitive method for the online determination of mercury isotopic compositions in solution samples with low mercury concentrations was developed, which decreased the sample consumption and analytical time significantly.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2022)
Article
Biochemical Research Methods
Yanli Yu, Anna Vivo Navarro, Angels Sahuquillo, Guangming Zhou, Jose Fermin Lopez-Sanchez
JOURNAL OF CHROMATOGRAPHY A
(2020)
Article
Chemistry, Analytical
Roger Pero-Gascon, Marcos Tascon, Victoria Sanz-Nebot, Leonardo G. Gagliardi, Fernando Benavente
Article
Chemistry, Analytical
Roger Pero-Gascon, Fernando Benavente, Zoran Minic, Maxim V. Berezovski, Victoria Sanz-Nebot
ANALYTICAL CHEMISTRY
(2020)
Article
Biochemical Research Methods
Oumaima El Ouahabi, Hiba Salim, Roger Pero-Gascon, Fernando Benavente
Summary: Extracellular vesicles (EVs) were enriched for exosomes from human serum using polyethylene glycol (PEG) precipitation in this study. A novel capillary electrophoresis-ultraviolet diode array (CE-UV-DAD) method was developed to obtain characteristic electrophoretic profiles of the EV preparations. Under optimized conditions, characteristic electrophoretic multiwavelength profiles of the EV preparation and exosome standard were obtained, showing excellent reproducibility and appropriate analysis times.
JOURNAL OF CHROMATOGRAPHY A
(2021)
Article
Environmental Sciences
Roger Pero-Gascon, Lieselot Y. Hemeryck, Giulia Poma, Gwen Falony, Tim S. Nawrot, Jeroen Raes, Lynn Vanhaecke, Marthe De Boevre, Adrian Covaci, Sarah De Saeger
Summary: FLEXiGUT is the first large-scale exposomics study focusing on chronic low-grade inflammation. By analyzing biomonitoring data and applying advanced omics techniques in two Flemish prospective cohorts, this study aims to uncover the associations between environmental exposure and gut inflammation.
ENVIRONMENT INTERNATIONAL
(2022)
Article
Environmental Sciences
Ilaria Langasco, Francesco Barracu, Mario Antonello Deroma, Jose Fermin Lopez-Sanchez, Andrea Mara, Paola Meloni, Maria Itria Pilo, Angels Sahuquillo Estrugo, Gavino Sanna, Nadia Spano, Antonino Spanu
Summary: This study aimed to assess and validate a group of analytical methods for measuring the concentration of arsenic in various chemical forms in soil and rice, focusing on the extraction methods of arsenic species from these matrices. The results revealed that the nature and amount of arsenic chemical species in rice grains and soils are significantly influenced by the irrigation methods used.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Food Science & Technology
Biel Granell, Anais Izquierdo-Llopart, Angels Sahuquillo, Jose F. Lopez-Sanchez, Javier Saurina
Summary: The elemental composition of different processing stages in the production of sparkling wine (cava) has been analyzed using ICP techniques. The data obtained has been used to characterize the wines and identify key elements in the winemaking process. Cu and K were found to be abundant in musts and their concentrations decrease throughout the production process, while S levels increase at the base wine step due to the addition of sulfites. Na, Ca, Fe, and Mg concentrations increase after the first fermentation due to the addition of clarifying agents. PCA was used to efficiently analyze trends and chemical markers within the samples.
Article
Chemistry, Analytical
Hiba Salim, Roger Pero-Gascon, Estela Gimenez, Fernando Benavente
Summary: This paper presents a fully integrated valve-free method for the sensitive targeted bottom-up analysis of proteins. The method combines online aptamer affinity solid-phase extraction and immobilized enzyme microreactor capillary electrophoresis-mass spectrometry (AA-SPE-IMER-CE-MS) to achieve purification, digestion, separation, and identification of proteins. The method has a low detection limit and good repeatability.
ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Aina Mir-Cerda, Biel Granell, Anais Izquierdo-Llopart, Angels Sahuquillo, Jose Fermin Lopez-Sanchez, Javier Saurina, Sonia Sentellas
Summary: In this study, samples from various stages of sparkling wine production were analyzed using fluorescence detection and inductively coupled plasma techniques to extract information on winemaking practices, product quality, and grape varieties. The results showed that combining data of different natures can lead to more comprehensive models.
Article
Medical Laboratory Technology
Leonor Guinon, Anna Soler, Rosa Maria Lopez, Sonia Pajares, Jose Manuel Gonzalez de Aledo, Ana Argudo-Ramirez, Jose Luis Marin, Judit Garcia-Villoria, Angeles Sahuquillo, Luisa Alvarez
Summary: This study assessed the inter-rater reliability of subjective activities during new-born screening and implemented measures to improve agreement between observers. The results showed that consistency improved after establishing appropriate evaluation criteria and reinforcing training.
Article
Biochemical Research Methods
Alba Morales-Rodriguez, Miquel Perez-Lopez, Elle Puigpelat, Angels Sahuquillo, Dolores Barron, Jose Fermin Lopez-Sanchez
Summary: This study explored the feasibility of using anionic exchange SPE cartridges for the isolation and preconcentration of arsenosugars, demonstrating successful extraction and analysis of three major arsenosugars with recoveries over 75% for two of them.
JOURNAL OF CHROMATOGRAPHY A
(2022)
Review
Chemistry, Analytical
Hiba Salim, Roger Pero-Gascon, Laura Pont, Estela Gimenez, Fernando Benavente
Summary: This review discusses the importance of miRNA purification and measurement in biomarker research, and provides an overview of non-conventional mass spectrometry-based methods for miRNA analysis.
MICROCHEMICAL JOURNAL
(2022)
Article
Biochemistry & Molecular Biology
Sergio Carneado, Jose Fermin Lopez-Sanchez, Angeles Sahuquillo
Summary: A novel strategy was proposed to assess the main variables affecting the migration of antimony from PET bottles to beverages. The study showed that temperature, storage time, matrix characteristics, and type of PET bottle all influence antimony leaching. The results are important for future legislation concerning migration of pollutants from packaging to food commodities.
Article
Medical Laboratory Technology
Leonor Guinon, Anna Soler, Angel Molina, Jose Luis Marin, Rosa Maria Lopez, Judit Garcia-Villoria, Angeles Sahuquillo, Luisa Alvarez
CLINICA CHIMICA ACTA
(2020)
Article
Chemistry, Analytical
Jeanneth Vasconez, Roger Pero-Gascon, Estela Gimenez, Fernando Benavente
Article
Chemistry, Analytical
Gang Qu, Yuxin Zhao, Qiaoli Zhang, Jina Wu, Xiaosen Li, Yang Yang, Shilei Liu
Summary: In this study, magnetic mesoporous materials combined with real-time in situ mass spectrometry were used for the high-throughput detection of hydrolyzed products of organophosphorus nerve agents. The method showed good linearity, low limits of detection and quantification, and high extraction recoveries. The magnetic preparation method used was quick, cost-effective, rugged, and safe. The results demonstrated the potential of this method for rapid and efficient determination of the target analytes in environmental samples.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Anna Hildebrand, Mariam Merchant, Danny O'Hare
Summary: Substandard and falsified artemisinin derivatives in antimalarials have caused significant deaths and economic losses. This study evaluates the feasibility of voltammetric methods for identifying and quantifying artemether. The findings suggest that electrochemical analysis shows promise as a method for artemether identification and quantification.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Marx Osorio Araujo Pereira, Alvaro Ferreira Junior, Edson Silvio Batista Rodrigues, Helena Mulser, Giovanna Nascimento de Mello e Silva, Wallans Torres Pio dos Santos, Eric de Souza Gil
Summary: Brazilian spotted fever (BSF) is a serious and rapidly evolving disease. A new impedimetric immunosensor was developed for rapid diagnosis by measuring specific antibodies in plasma. The sensor demonstrated selectivity and accuracy, and has potential for important applications in diagnostic testing.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Kathrin Schilling, Ronald A. Glabonjat, Olgica Balac, Marta Galvez-Fernandez, Arce Domingo-Relloso, Vesna Slavkovich, Jeff Goldsmith, Miranda R. Jones, Tiffany R. Sanchez, Ana Navas-Acien
Summary: Analysis of trace elements in urine is an important tool for assessing exposures, diagnosing nutritional status, and guiding public health and healthcare intervention. This study provides a sensitive method for analyzing 18 elements in urine samples, using only 100 μL. The results show good accuracy and sensitivity of the method.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Mengya Li, Shijie Liu, Shiliang Guo, Dong Liang, Miaoyun Li, Yaodi Zhu, Lijun Zhao, Jong-Hoon Lee, Gaiming Zhao, Yangyang Ma, Yanxia Liu
Summary: In this study, a magnetic flow device was developed to purify spores in a culture medium system. The device used magnetic nanoparticles to absorb vegetative cells, separating them from the spores. The achieved purity of the collected spores was over 95%. The study also demonstrated a rapid quantitative detection method using Raman spectroscopy.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Wanqiong Liu, Zixuan Wu, Jianwei Peng, Zebin Xu, Yong Liang
Summary: Metal-organic frameworks (MOFs) are effective carriers for molecular imprinting, but their poor dispersibility in aqueous solution is a significant drawback. In this study, we have applied amphiphilic block copolymers and molecularly imprinted technology on MOFs to improve the hydrophilicity of molecularly imprinted fluorescent materials.
ANALYTICAL METHODS
(2024)