Article
Environmental Sciences
Bertille Bonnaud, Cecile Miege, Amandine Daval, Vincent Fauvelle, Nicolas Mazzella
Summary: The diffusive gradient in thin film technique was applied to measure organic compounds in this study. Two methods for measuring the diffusional coefficient (D) were compared for 112 organic compounds. The D-stack method tends to be higher than the D-cell method, and is considered as a reference value for diffusion in gel.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Rachel Martins de Barros, Juliette Rougerie, Robin Guibal, Sophie Lissalde, Remy Buzier, Stephane Simon, Gilles Guibaud
Summary: In this study, the performances of L-DGT, conventional DGT, and POCIS were compared for monitoring organic contaminants. The results showed that L-DGT had advantages in sensitivity and robustness during field deployment compared to the conventional DGT. POCIS had the highest sensitivity, but both L-DGT and DGT provided more reliable determination of time-weighted average concentrations (CW). L-DGT was more suitable for low-contaminated contexts requiring higher sensitivity, while POCIS remained the most suitable passive sampler for qualitative evaluation.
ENVIRONMENTAL POLLUTION
(2023)
Review
Chemistry, Analytical
Yue Gao, Chunyang Zhou, Josep Galceran, Carlos Rey-Castro, Jaume Puy, Willy Baeyens, Martine Leermakers
Summary: This article reviews the application of Diffusive Gradients in Thin-films (DGT) in environmental studies, focusing on oxyanions and platinum group elements (PGEs). It summarizes the recent analytical advances in the development and use of DGT for these target element groups, while also highlighting the remaining knowledge gaps.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2022)
Article
Environmental Sciences
Po Wang, Bowen Du, Jayme Smith, Wenjian Lao, Charles S. Wong, Eddy Y. Zeng
Summary: A passive sampler based on organic-diffusive gradients in thin films (o-DGT) was developed for monitoring microcystins (MCs) in waterbodies, showing effectiveness in assessing dissolved MCs. o-DGT demonstrated a lower time-weighted average MC concentration compared to grab sampling, indicating its potential limitations in capturing total MC levels in waterbodies.
Review
Chemistry, Multidisciplinary
Josep Galceran, Yue Gao, Jaume Puy, Martine Leermakers, Carlos Rey-Castro, Chunyang Zhou, Willy Baeyens
Summary: The paper reviews the use of Diffusive Gradients in Thin-films (DGT) technique for assessing free ions and labile metal complexes in aquatic systems. It discusses the principles and applications of this technique in determining the speciation of different species of elements, including their labile concentrations, mobilities, and labilities. DGT has been successfully applied in determining the organic pool of trace metals in freshwaters and characterizing organic and inorganic complexes in seawaters.
FRONTIERS IN CHEMISTRY
(2021)
Article
Environmental Sciences
Darren J. Koppel, Gwilym A. Price, Kathryn E. Brown, Merrin S. Adams, Catherine K. King, Damian B. Gore, Dianne F. Jolley
Summary: Metal contaminants in Antarctic soils show varied concentrations and activities in different extraction agents, while the DGT method can provide environmentally relevant measurements of metal contaminant lability.
Article
Chemistry, Analytical
Hao Cheng, Yanying Li, Hamid Pouran, William Davison, Hao Zhang
Summary: This study demonstrated that the diffusion coefficient of uranium is independent of pH and the type of binding gel used, as long as the binding efficiency (B) is taken into account. These findings suggest that DGT equipped with either Metsorb or Chelex binding gels can accurately measure uranium under various environmental conditions.
ENVIRONMENTAL CHEMISTRY
(2022)
Article
Engineering, Environmental
Mengke Song, Yicheng Su, Longfei Jiang, Ke Peng, Jinling Li, Sisi Liu, Yingtao Sun, Chang-Er Chen, Chunling Luo
Summary: This study utilized the DGT technique to determine the bioavailability of antibiotics in soil and compared the results with plant uptake, soil solutions, and solvent extraction methods. The results showed that DGT had predictive capability for plant uptake of antibiotics and the bioavailability varied in different soils.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Shuang Wu, Hanbing Li, Dayi Zhang, Hao Zhang
Summary: Heavy metal contaminations can have severe toxic impacts on ecological systems and human health. This study introduces a novel technique called Bio-DGT, which combines the use of a bioassay with the diffusive gradients in thin-films (DGT) method to simultaneously assess the toxicity of metals while measuring their labile concentrations. The results show that Bio-DGT has good sensitivity and stability, making it a potential tool for risk assessment of heavy metal contaminations.
ENVIRONMENTAL POLLUTION
(2023)
Review
Engineering, Environmental
Yixuan Liang, Hanbing Li, Sumei Li, Sha Chen
Summary: Antibiotics, widely used in human and veterinary medicine, are persistent organic compounds that contribute to the development of antibiotic resistance in microbes. This review discusses the use of o-DGT technology to study the behavior of antibiotics in different environmental media. It compares different agarose diffusive gel and binding agents, explores the feasibility of o-DGT in water and soil, and analyzes the potential of using o-DGT in sediment for antibiotic measurements.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Cheng Yao, Feifei Che, Xia Jiang, Zhihao Wu, Junyi Chen, Kun Wang
Summary: The study revealed that under the influence of pollutants discharged by textile plants, the concentrations of antimony compounds in the sediment of shallow lakes are relatively high. Antimony was found to be immobile in the oxygen-rich layer, but released along with other elements in the anoxic environment, depending on the redox conditions and the labile antimony content in the sediment. The mobility of antimony in shallow lakes and wetland sediments should be carefully considered when assessing the potential ecological risks.
Article
Environmental Sciences
Megan L. Gillmore, Gwilym A. Price, Lisa A. Golding, Jenny L. Stauber, Merrin S. Adams, Stuart L. Simpson, Ross E. W. Smith, Dianne F. Jolley
Summary: The geographical shift of nickel mining to small island countries of the Southeast Asia and Melanesia region has increased the environmental risk associated with sediment nickel exposure to benthic estuarine/marine biota. The DGT technique can be used as a complementary tool to assess the bioavailability of nickel in estuarine/marine sediments, especially in areas where there is limited toxicity data available.
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
(2021)
Article
Environmental Sciences
Chongyang Qin, Xiaoyu Xu, Erin Peck
Summary: The H-02 constructed wetland effectively removed copper and zinc from industrial wastewater with high removal efficiencies. By combining DGTs and BLM, the study explored metal speciation and bioavailability in the wetland waters, providing insights into the understanding of metal biogeochemistry and removal processes for ensuring long-term sustainability.
ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Hongmei Cao, Qingwei Bu, Qingshan Li, Xiaohong Gao, Huaijun Xie, Wenwen Gong, Xiaoxiao Wang, Lei Yang, Jianfeng Tang
Summary: This study developed passive sampling devices called diffusive gradients in thin films (DGTs) for sampling pharmaceuticals in surface waters. The results showed that the HLB-DGT devices exhibited good performance and their results were comparable to conventional grab sampling. Additionally, the study expanded the monitoring range to include three antiviral drugs used for COVID-19 treatment.
ENVIRONMENTAL POLLUTION
(2022)
Article
Engineering, Environmental
Sisi Liu, Shibao Chen, Xiaohao Li, Yubo Yue, Jinling Li, Paul N. Williams, Zhanyun Wang, Cailin Li, Yuanyuan Yang, Guang-Guo Ying, Chang-Er Chen
Summary: DB is a commonly used bitter agent in products, but little is known about its occurrence in global aquatic environments. MCX-DGT is a reliable method for measuring DB in water, and DB was found to persist in wastewater treatment plants.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Water Resources
Mikaela Cherry, Troy Gilmore, Aaron Mittelstet, Didier Gastmans, Vinicius Santos, John B. Gates
HYDROLOGICAL PROCESSES
(2020)
Article
Chemistry, Analytical
Lauren N. Marques Yabuki, Karen S. Luko Sulato, Milena R. Boniolo, Amauri A. Menegario, Marcelo L. Garcia
Summary: Novel binding agents Musa cavendishi banana peel and Moringa Oleifera seeds immobilized in agarose gel have been developed and validated for the determination of Cd, Cu, Pb, and Zn in waters using the DGT technique. The proposed methods showed excellent performance and could be applied in various environmental samples, offering cost-effective and environmentally friendly solutions.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Sibele Ezaki, Didier Gastmans, Mara Akie Iritani, Vinicius dos Santos, Marcia Regina Stradioto
ISOTOPES IN ENVIRONMENTAL AND HEALTH STUDIES
(2020)
Article
Environmental Sciences
Lucas Vituri Santarosa, Didier Gastmans, Tatiana Penteado Sitolini, Roberto Eduardo Kirchheim, Sebastian Balbin Betancur, Marcelo E. Dias de Oliveira, Jose Claudio Viegas Campos, Rodrigo Lilla Manzione
Summary: This study aims to estimate the spatial and temporal variations of groundwater recharge in the outcrop zones of the Guarani Aquifer System in Brazil, using the Spatial Recharge method and comparing it with two traditional methods. The three methods showed similar estimates for groundwater recharge, around 17% of total rainfall, with the SR method providing robust estimation capabilities for areas lacking hydrological monitoring programs. The SR method offers valuable information for water management policymakers to mitigate impacts of climate variations and land use on recharge processes.
ENVIRONMENTAL EARTH SCIENCES
(2021)
Article
Environmental Sciences
Karen Luko-Sulato, Vinicius Atilio Rosa, Lucas Moreira Furlan, Vania Rosolen
Summary: This study investigated the concentration of essential and toxic elements in the soil solution of a wetland impacted by intense agricultural activity. Results indicate that the complexation of metals with organic matter may play a significant role in regulating the distribution of these elements in the ecosystem.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2021)
Article
Chemistry, Inorganic & Nuclear
Lucas Vituri Santarosa, Didier Gastmans, Ricardo Sanchez-Murillo, Vinicius dos Santos, Ludmila Vianna Batista, Sebastian Balbin Betancur
Summary: The Corumbatai River basin in Sao Paulo, Brazil, is facing a critical situation in water availability due to intensive use for agriculture and urbanization. The study findings indicate that baseflow contribution varies from 50% to 70% of the total flow, with a seasonal regime of mixing surface and groundwater during the wet season and groundwater discharge in the dry season. It highlights the urgent need for diversified monitoring methods and feasible regional and political regulations to control the impacts on basin water resilience in response to climate change and increasing demand.
ISOTOPES IN ENVIRONMENTAL AND HEALTH STUDIES
(2021)
Article
Environmental Sciences
Cleber Santos, Rayonil Carneiro, Camilla Borges, Didier Gastmans, Laura Borma
Summary: The use of stable isotopes of hydrogen and oxygen is a widely used tool to trace water paths along the hydrological cycle, providing support for understanding climatic conditions. The South Atlantic Convergence Zone (SACZ) in southeastern Brazil causes a significant amount of precipitation during the southern summer. Research shows that the isotopic composition of precipitation is more depleted during SACZ events, indicating a higher contribution of evapotranspiration from the Amazon rainforest to the water supply in southeastern Brazil.
Article
Environmental Sciences
Everton Tiago Sulato, Karen Luko-Sulato, Jorge Henrique Pedrobom, Lucia Maria de Souza de Oliveira, Guilherme dos Santos Lima, Jose Silvio Govone, Andre S. Barreto, Marcus Antonio Goncalves de Araujo Junior, Amauri Antonio Menegario
Summary: The study analyzed metal and metalloid concentrations in the liver tissue of green turtles stranded on the Brazilian coast, finding significant correlations between dietary shifts and element concentrations. Biological characteristics like age and sex also influenced element concentrations.
ENVIRONMENTAL RESEARCH
(2022)
Article
Water Resources
Lucas Vituri Santarosa, Didier Gastmans, Troy E. Gilmore, Jan Boll, Sebastian Balbin Betancur, Vitor Fidelis Monteiro Goncalves
Summary: This study examines the impact of hydrogeological frameworks on streamflow fluctuations in two water resource management units in Sao Paulo state, Brazil. The results show that basins overlying crystalline and sedimentary aquifers have significant contributions from baseflow, with PCJ basins being more vulnerable to drought due to higher dependence on surface water.
INTERNATIONAL JOURNAL OF RIVER BASIN MANAGEMENT
(2023)
Article
Environmental Sciences
Vanderlei Gomes Lancas, Lucas Vituri Santarosa, Lia Nogueira Garpelli, Laura de Simone Borma, Carolina Stager Quaggio, Veridiana Teixeira de Souza Martins, Didier Gastmans
Summary: Urban growth can lead to changes in the urban hydrological cycle, affecting water availability in densely populated regions. The use of water isotopologues can provide valuable information about water sources and aid in implementing better water conservation strategies in urban environments. This study assessed the isotopic compositions of water sources in both a pristine and urbanized watershed, highlighting the importance of isotope hydrology techniques in understanding and managing urban hydrology.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2022)
Article
Geochemistry & Geophysics
Davi Diorio Parrotti, Fabiano Tomazini da Conceicao, Guillermo Rafael Beltran Navarro
Summary: Supergene mineral deposits formed through water/rock interactions are economically important, as demonstrated by the supergene manganese deposits in Brazil. In southern Minas Gerais, the municipalities of Ouro Fino and Careacu host supergene manganese occurrences with high manganese content. These deposits contain a diverse mineral assemblage, including spessartine, quartz, Mn-oxides, goethite, and kaolinite. The study areas are relevant for potential commercial mining of manganese.
Article
Water Resources
Marcelo Eduardo Dias de Oliveira, Didier Gastmans, Marcelo Donadelli Sacchi, Rodrigo Esteves Rocha, Camila de Lima, Vinicius dos Santos
Summary: This study aimed to obtain a composite value of saturated hydraulic conductivity (Ks) at a catchment scale using pedotransfer functions (PTFs) in a recharge area of the Guarani Aquifer System. The use of PTFs proved to be a faster and simpler method to efficiently determine the Ks value for the watershed and to capture the stochastic variation in terms of soil pore combination at the watershed scale.
RBRH-REVISTA BRASILEIRA DE RECURSOS HIDRICOS
(2021)
Article
Water Resources
Sebastian Balbin Betancur, Didier Gastmans, Katherine Vasquez Vasquez, Lucas Vituri Santarosa, Vinicius dos Santos, Roberto Eduardo Kirchheim
RBRH-REVISTA BRASILEIRA DE RECURSOS HIDRICOS
(2020)
Article
Chemistry, Multidisciplinary
Thiago Dourado, Hendryk Gemeiner, Ana Carla F. Gomes, Eduardo Almeida, Adivania C. da Silva, Nayara Valadao, Amauri Antonio Menegario, Jose Silvio Govone, Didier Gastmans
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
(2020)
Article
Water Resources
Camila Marcon de Carvalho Leite, Edson Wendland, Didier Gastmans
Summary: This study characterized the hydrogeochemical features of groundwater in the northeast region of GAS in Sao Carlos, Brazil, revealing a significant ionic variability and identifying four main types of hydrochemical water. The variability in groundwater composition is mainly attributed to mineral dissolution and anthropic activities, with principal component analysis showing two main factors explaining a large portion of the total sample set variability.
ENGENHARIA SANITARIA E AMBIENTAL
(2021)
Article
Chemistry, Analytical
Qian Wu, Li Tian, Xiangyu Shan, Huiling Li, Chao Li, Juan Lu
Summary: A novel ECL sensor was developed by modifying Fe3CuO4-Ru(bpy)3+ and GO-CdS@ZnS on the electrode for the detection of permethrin. The sensor exhibited high sensitivity and a wide detection range.
Article
Chemistry, Analytical
Tingting Gong, Lei Liao, Bingying Jiang, Ruo Yuan, Yun Xiang
Summary: In this study, a fluorescent biosensing system for high sensitivity detection of MT was established using a new Ag+-stabilized DNA triplex probe (Ag+-SDTP) combined with catalytic hairpin assembly (CHA) and CRISPR/Cas12a signal enhancements. The sensing method is able to selectively detect MT from other non-specific molecules and can achieve low level detection of MT in diluted human serums, demonstrating its potential for monitoring disease-specific MT biomarker at trace levels.
Article
Chemistry, Analytical
Estrella Sanz Rodriguez, Kyra Wood, Paul R. Haddad, Brett Paull
Summary: This study presents a simple, rapid, and reliable method for determining boron in aqueous solutions using suppressed ion chromatography coupled to electrospray ionisation-triple quadrupole mass spectrometry. The method achieved a low limit of detection and demonstrated excellent analytical performance.
Article
Chemistry, Analytical
Aline Cournut, Paul Moustiez, Yannick Coffinier, Christine Enjalbal, Claudia Bich
Summary: Alzheimer's disease is a major cause of senile dementia and is characterized by the aggregation of neurofibrillary tangles and amyloid plaques in the brain. The A beta 1-42 peptide is considered the primary cause of neurotoxicity due to its insolubility and subsequent aggregation. A beta 1-42 and A beta 1-40 have been identified as relevant biomarkers for AD diagnosis, and SurfaceAssisted Laser Desorption/Ionization Mass Spectrometry (SALDI-MS) was used to monitor the A beta 1-42/A beta 1-40 ratio without prior sample treatment.
Article
Chemistry, Analytical
Dotse Selali Chormey, Buse Tugba Zaman, Tulay Borahan Kustanto, Sezin Erarpat Bodur, Suleyman Bodur, Elif Ozturk Er, Sezgin Bakirdere
Summary: This review provides an overview of the harmful effects of endocrine disrupting chemicals (EDCs) on human health and introduces the methods for analyzing EDCs. Recent research has focused on using green chemicals, such as deep eutectic solvents (DESs), for microextraction to ensure environmental safety.
Article
Chemistry, Analytical
Yan Zhang, Renfeng Xu, Jingjing Wu, Zhenghong Zhang, Yuhuang Wang, Hongqin Yang, Sheng Zhang
Summary: This study visualized the pore-like structures in prostate cancer cell membranes after treatment with the anticancer drug paclitaxel, demonstrating its mechanism of action related to oxidative damage.
Article
Chemistry, Analytical
Chihong Ma, Qin Zhou, Jinjin Shi, Hua Gao, Di Huang, Huimin Xue, Han Wang, Zhenzhong Zhang, Sen Yang, Junli Zhang, Kaixiang Zhang
Summary: We developed a CRISPR-empowered electrochemical biosensor, named PER-E-CRISPR, for amplification-free and sensitive detection of miR-21. The biosensor combines the advantages of CRISPR/Cas13a and primer exchange reaction (PER) for target amplification. Under optimized conditions, the PER-E-CRISPR assay exhibits a linear range from 10-13 to 10-7 M and a limit of detection of 30.2 fM. The biosensor shows excellent performance in actual plasma, indicating promising prospects for miRNA detection in molecular diagnosis.
Article
Chemistry, Analytical
Gang Liang, Jie Zhao, Yufei Gao, Tao Xie, Jianhui Zhen, Ligang Pan, Wenwen Gong
Summary: Molecular docking (MD) analysis is widely used for studying the interaction between aptamers and small molecules. This study established steady-state aptamers of tertiary structures (SATS) using specific aptamers of tetracycline antibiotics as docking models. Molecular docking results revealed multiple binding sites in the SATS of aptamers, with significant variations in binding free energy (BFE) and docking score (DS). The study also proposed a method for MD analysis based on SATS, providing insights into binding mode and predicting binding sites.
Article
Chemistry, Analytical
Yixuan Xu, Changchang Teng, Huiping Dang, Dalong Yin, Lifeng Yan
Summary: Stable organic radical molecules with high NIR fluorescence quantum efficiency have been synthesized and encapsulated into nanoparticles, which show great potential for both photodynamic therapy (PDT) and photothermal therapy (PTT) of tumors.
Article
Chemistry, Analytical
Yu Su, Dandan Yang, Yanjie Wang, Jie Ding, Lan Ding, Daqian Song
Summary: In this study, a highly selective molecularly imprinted polymer Cu-MIPs@CS was designed and synthesized for bisphenol A (BPA). Cu-MIPs@CS showed significantly enhanced imprinting factor and selective factor towards BPA compared to MIPs@CS. It also exhibited superior discrimination ability between BPA and its structural analogue. Additionally, Cu-MIPs@CS were successfully applied as a solid phase extraction adsorbent for the determination of BPA in drinking water samples.
Article
Chemistry, Analytical
Yi Qiao, Qiongdan Zhang, Yukun He, Tianguang Cheng, Jing Tu
Summary: Single cell heterogeneity plays an important role in many biological phenomena, and distinguishing cells with specific mutations is beneficial for clinical diagnosis and drug screening. This study introduces a gel plate platform that can distinguish cell types based on their phenotypes, with low equipment requirement. The gel platform has potential in point-of-care circumstances and single-cell stimulation responses that prioritize efficiency and simplicity.
Article
Chemistry, Analytical
Chengke Wang, Shuyang Sun, Ping Wang, Huawei Zhao, Wenling Li
Summary: The food safety of aquatic products is a global concern. Nanotechnology-based analyses have advantages in the detection of bacteria, metal ions, and small molecule contaminants. This review summarizes the recent advances in biosensing strategies for aquatic products and highlights the application of nanomaterials, lateral flow-based biosensors, surface-enhanced Raman scattering, microfluidic chips, and molecular imprinting technologies.
Article
Chemistry, Analytical
Liping Zhu, Zeng Tang, Xuemei Zhang, Li Zhu, Tian Meng, Linying Yu, Ting Xiao, Shasha Lu, Xiaoli Xiong, Xiurong Yang
Summary: A sensitive off-on electrochemiluminescence DNA sensor was developed using Exo III-assisted cascade amplification system. The sensor achieved high selectivity and ultra-high sensitivity in detecting target DNA by utilizing ECL and SPR effects. This study provides a new perspective for designing highly sensitive and programmable ECL biosensors.
Article
Chemistry, Analytical
Tong Li, Mengxu Sun, Suping Xia, Ting Huang, Rong-Tian Li, Chunrong Li, Zong Dai, Jin-Xiang Chen, Jun Chen, Nuan Jia
Summary: Here, we developed a binary system based on DNA tetrahedron and fluorogenic RNA aptamers for highly specific and label-free mRNA imaging in living cells. This system achieved high specificity label-free detection of nucleic acids with a detection limit of 1.34 nM. The method has potential applications in early disease diagnosis and new drug development.
Article
Chemistry, Analytical
Yao Zhao, Shu Zhang, Wang Yao, Yuxuan Zhu, Jing Qian, Juan Yang, Nianjun Yang
Summary: A new hierarchical nanostructured composite with high conductivity and catalytic activity is synthesized. The sensor exhibits significant catalytic effect and high sensitivity for monitoring the environmental endocrine disruptor bisphenol A (BPA).