Article
Environmental Sciences
Yuping Xiang, Guangliang Liu, Yongguang Yin, Yong Cai
Summary: This study extracted and characterized extracellular polymeric substances (EPS) from periphyton in Florida Everglades to explore their role in the binding and speciation of mercury (Hg(II)). The results showed that EPS primarily consisted of proteins, polysaccharides, phospholipids, and nucleic acids, and could transform Hg(II) into colloidal and capsular EPS-bound forms. The study found that proteins and polysaccharides in EPS contributed to Hg(II) binding, with different preferred binding groups for colloidal and capsular EPS. EPS also significantly decreased the reactive Hg(II) in the aquatic environment.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Jiang Liu, Benqi Lu, Alexandre J. Poulain, Rui Zhang, Tong Zhang, Xinbin Feng, Bo Meng
Summary: Rice consumption is a major pathway for human methylmercury exposure in inland China, especially in mercury contaminated regions. However, high levels of methylmercury are still found in rice, calling for reconsideration of the bioavailability of mercury species in paddy soils. Incubation experiments showed that different Hg(II) species have varying impacts on mercury methylation at different mercury concentrations, emphasizing the importance of considering site-specific characteristics and the nature of mercury substrates for determining net methylmercury production.
ENVIRONMENTAL POLLUTION
(2022)
Article
Chemistry, Inorganic & Nuclear
Susan Nehzati, Anne O. Summers, Natalia Dolgova, Jianfeng Zhu, Dimosthenis Sokaras, Thomas Kroll, Ingrid J. Pickering, Graham N. George
Summary: Research shows that Hg(II) can directly bind to DNA, forming interstrand cross-links, with the energetically preferred mode of binding to thymine being through N3. Using 1-methylthymine as a model, it is found that the bis-thymine coordination of Hg(II) provides a highly characteristic X-ray spectroscopic signature.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Maryam Bahrani-Pour, Azizolla Beheshti, Tahereh Sedaghat, Elham Hoveizi, Nadieh Naseri, Peter Mayer, Roberto Centore
Summary: In this study, three new mercury coordination polymers with fascinating structures and properties were successfully synthesized and characterized using various techniques. These polymers exhibit different toxicities and adsorption capacities, making them promising for various applications.
DALTON TRANSACTIONS
(2023)
Article
Geochemistry & Geophysics
Lijie Zhang, Xujun Liang, Quanying Wang, Yaoling Zhang, Xiangping Yin, Xia Lu, Eric M. Pierce, Baohua Gu
Summary: This study investigated the isotope exchange between newly spiked and pre-existing Hg(II) in environmental matrices, as well as its impact on Hg(II) transformation and bioaccumulation. The results suggest that isotope exchange may lead to biased rate calculations of Hg(II) transformation and bioaccumulation when enriched Hg isotopes are applied in environmental matrices.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Article
Engineering, Environmental
Yuping Xiang, Yingying Guo, Guangliang Liu, Yanwei Liu, Maoyong Song, Jianbo Shi, Ligang Hu, Yongguang Yin, Yong Cai, Guibin Jiang
Summary: A biosensor based on Escherichia coli was developed to assess the bioavailability of particle-bound mercury (HgP). The results showed that HgP uptake by microorganisms was ubiquitous in both oxic and anoxic environments, with enhanced bioavailability under anoxic conditions.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Ahmed S. Al-Janabi, Omar D. H. Al-Mouqdady, Mohammad E. A. Al-Doori, Hela Ferjani, O. K. Al Duaij, Zeid A. ALOthman, Tarek A. Yousef
Summary: Nine Hg(II) complexes were synthesized and characterized, with some complexes used as precursors for the synthesis of HgS nanoparticles.
JOURNAL OF SAUDI CHEMICAL SOCIETY
(2022)
Article
Environmental Sciences
Gufeng Li, Mingrong Lu, Shaoqing Li, Min Yang, Yuanling Zhang, Yanli Zhang, Hongbin Wang, Wenrong Yang
Summary: A novel detection strategy based on fluorescence OFF-ON was proposed for the detection of mercury ion in water environment. The system incorporated gold nanoparticles and L-cysteine, and the fluorescence state transition was observed through the catalytic hydrolysis mechanism of Hg2+. The strategy exhibited high specificity, sensitivity, and stability, providing a new sensing platform for heavy metal ions detection in water environment.
Article
Chemistry, Analytical
Pamela S. M. Rocha, Andre S. Araujo, Ricardo J. Cassella
Summary: A single-vial methodology for the extraction and determination of mercury(II) in water samples was developed. The method showed good accuracy and interference suppression ability through optimization and evaluation of the method's performance.
ANALYTICAL METHODS
(2023)
Article
Chemistry, Multidisciplinary
R. Fouad, Ibrahim A. Shaaban, Tarik E. Ali, Mohammed A. Assiri, S. S. Shenouda
Summary: Novel and stable coordinating compounds were successfully isolated and characterized through various techniques. Experimental data matched well with theoretical calculations, indicating the bidentate nature of MCMT as a ligand forming chelates with metal ions. Thermal analysis and optical property studies further confirmed the structure and properties of the complexes.
Article
Chemistry, Inorganic & Nuclear
Tong Cao, Francisco Javier Valverde-Munoz, Xiaoyi Duan, Mingjian Zhang, Ping Wang, Lingbao Xing, Fenggang Sun, Zhen Zhou, Hui Liu, Jianzhuang Jiang, M. Carmen Munoz, Jose Antonio Real, Daopeng Zhang
Summary: The self-assembly of tetrahedral building blocks and iron(II) ions resulted in a series of heterobimetallic Hg-II-Fe-II coordination polymers with diverse structural and magnetic properties. The nature of the bridging organic ligands plays a crucial role in determining the structural features of the products.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Francisco Sanchez-Ferez, Xavier Solans-Monfort, Teresa Calvet, Merce Font-Bardia, Josefina Pons
Summary: Controlling the formation of desired product in the appropriate crystalline form is a fundamental breakthrough in crystal engineering. In this study, the formation of two concomitant polymorphs was observed, which originated from the Hg(II) cores and intermolecular associations, particularly indicated by Hg···π and π···π interactions. The selective synthesis of these polymorphs was successfully achieved by changing the synthetic conditions, and significant variations in solid-state photoluminescence were found due to differences in stability between the polymorphs.
INORGANIC CHEMISTRY
(2022)
Article
Materials Science, Biomaterials
Wei Ge, Yatao Xu, Chao Liu, Wenjng Xu, Yewei Zhang, Weili Si, Wenli Zhao, Changjin Ou, Xiaochen Dong
Summary: This study successfully prepared NIR-II absorbing PTAs by synthesizing different substituted electron donors and assembling them with electron-deficient F4TCNQ to form charge-transfer complex nanoparticles. Among them, Et-F4 NPs showed the highest NIR-II absorption ability and best photothermal effect, demonstrating potential antitumor efficacy. The research indicated that the photophysical properties of CTCs can be tailored by changing molecular structure and aggregate behaviors.
JOURNAL OF MATERIALS CHEMISTRY B
(2021)
Article
Environmental Sciences
Raewyn M. Town, Herman P. van Leeuwen
Summary: Studying the bioavailability of Ni(II) in freshwaters and its complexes with dissolved organic carbon, as well as evaluating the potential contribution of complex dissociation to the diffusive supply flux of free Ni2+ in freshwaters. The results demonstrate the crucial role of dissociation kinetics in buffering the metal ion concentration.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2022)
Article
Chemistry, Inorganic & Nuclear
Dhrubajyoti Majumdar, Tapan Kumar Pal, Shahenur Alam Sakib, Sourav Das, Kalipada Bankura, Dipankar Mishra
Summary: A novel heteronuclear Salen complex has been synthesized and characterized using various spectroscopic techniques, providing insights into its crystal structure and intermolecular interactions.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Engineering, Environmental
Carolyn M. Wilke, Bettina Wunderlich, Jean-Francois Gaillard, Kimberly A. Gray
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2018)
Article
Engineering, Environmental
Minwei Xie, Ning Wang, Jean-Francois Gaillard, Aaron I. Packman
JOURNAL OF HAZARDOUS MATERIALS
(2018)
Article
Chemistry, Physical
Marco A. Alsina, Jean-Francois Gaillard
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2018)
Article
Engineering, Environmental
Minwei Xie, Marco A. Alsina, Jeffrey Yuen, Aaron I. Packman, Jean-Francois Gaillard
JOURNAL OF HAZARDOUS MATERIALS
(2019)
Article
Dentistry, Oral Surgery & Medicine
Carl P. Myers, Iraklis Pappas, Ekta Makwana, Rehana Begum-Gafur, Neelima Utgikar, Marco A. Alsina, Michael Fitzgerald, Harsh M. Trivedi, Jean-Francois Gaillard, James G. Masters, Richard J. Sullivan
JOURNAL OF THE AMERICAN DENTAL ASSOCIATION
(2019)
Article
Environmental Sciences
Rong Huang, Guangcheng Huo, Shaoxian Song, Yinta Li, Ling Xia, Jean-Francois Gaillard
ENVIRONMENTAL POLLUTION
(2019)
Article
Biotechnology & Applied Microbiology
Jaeyoung K. Jung, Khalid K. Alam, Matthew S. Verosloff, Daiana A. Capdevila, Morgane Desmau, Phillip R. Clauer, Jeong Wook Lee, Peter Q. Nguyen, Pablo A. Pasten, Sandrine J. Matiasek, Jean-Francois Gaillard, David P. Giedroc, James J. Collins, Julius B. Lucks
NATURE BIOTECHNOLOGY
(2020)
Article
Environmental Sciences
Xiaoya Chen, Carolyn M. Wilke, Jean-Francois Gaillard, Kimberly A. Gray
Article
Green & Sustainable Science & Technology
Felipe Vargas, Marco A. Alsina, Jean-Francois Gaillard, Pablo Pasten, Mauricio Lopez
Summary: Utilizing copper tailings as supplementary cementitious material can help reduce environmental impact, but the leaching of toxic metals, especially copper, remains a concern. Investigating the entrapment mechanisms of copper in the cementitious matrix has shown promising results, such as reducing leaching by decreasing the water-to-binder ratio and promoting the formation of hydration products. Understanding these mechanisms could lead to new strategies for reducing the mobility of toxic elements and increasing the use of copper tailings as a replacement for cement.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Chemistry, Multidisciplinary
Mohamed Elsamadony, Ahmed Elreedy, Alsayed Mostafa, Manabu Fujii, Johannes Gescher, Sepehr Shakeri Yekta, Anna Schnurer, Jean-Francois Gaillard, Deepak Pant
Summary: This article delves into the mechanisms of nanosized metal derivatives (NMDs) impacting the production of methane (CH4) and hydrogen (H-2) in anaerobic digestion (AD) and dark fermentation (DF) processes, exploring effects on extracellular electron transfer, biotic-biotic interactions such as direct interspecies electron transfer (DIET), and biotic-abiotic exchanges mediated by redox reactions with metals.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Engineering, Environmental
Samuel M. M. Wallace, Yuchi Zhang, Lang Zhou, Qing Ma, William E. E. Guise, Nancy D. D. Denslow, Jean-Claude Bonzongo, Jean-Francois Gaillard
Summary: Drinking water treatment residuals (DWTRs) are waste materials that can immobilize contaminants due to their strong sorptive properties. In this study, aluminum-based DWTRs were characterized using various analytical techniques. The results showed that non-coagulant additives play an important role in controlling sorption, and specific surface area measurements varied between 7.23 +/- 0.03 and 197.6 +/- 0.9 m(2) g(-1). XRD analysis revealed the presence of crystalline minerals primarily derived from source waters or additives. Fe and Mn were detected in all samples, with Mn being significant in samples with potassium permanganate as an additive. The chemical speciation of these elements was further characterized using XAS spectra.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2023)
Article
Chemistry, Analytical
Morgane Desmau, Marco A. Alsina, Jean-Francois Gaillard
Summary: Research has shown that the stability of stannous species in toothpaste is influenced by both the composition of the paste and the time of opening, ultimately oxidizing into Sn(IV) hydroxide. Therefore, the rational design of toothpaste formulations to enhance the stability of stannous agents is crucial.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2021)
Article
Environmental Sciences
Mauricio Montecinos, Marina Coquery, Marco A. Alsina, Marie Bretier, Jean-Francois Gaillard, Aymeric Dabrin, Pablo Pasten
Article
Biochemistry & Molecular Biology
Sara A. Thomas, Patrice Catty, Jean-Louis Hazemann, Isabelle Michaud-Soret, Jean-Francois Gaillard
Article
Chemistry, Multidisciplinary
Carolyn M. Wilke, Claire Petersen, Marco A. Alsina, Jean-Francois Gaillard, Kimberly A. Gray
ENVIRONMENTAL SCIENCE-NANO
(2019)