A5090689698- Mercury impact and mitigation studies
- Heavy metals in environment
- Arsenic contamination and mitigation
- Heavy Metal Exposure and Toxicity
- Analytical chemistry methods development
- Toxic Organic Pollutants Impact
- Electrochemical Analysis and Applications
- Environmental Toxicology and Ecotoxicology
- Melamine detection and toxicity
- Water Treatment and Disinfection
- Marine animal studies overview
- Marine Biology and Environmental Chemistry
- Chromium effects and bioremediation
- Gold and Silver Nanoparticles Synthesis and Applications
- Selenium in Biological Systems
- Mine drainage and remediation techniques
- Air Quality and Health Impacts
- Lichen and fungal ecology
- Nanoparticles: synthesis and applications
- Iron oxide chemistry and applications
- Biosensors and Analytical Detection
- Geochemistry and Elemental Analysis
- Coal and Its By-products
- Demographic Trends and Gender Preferences
- Radioactive element chemistry and processing
Florida International University
2016-2025
Research Center for Eco-Environmental Sciences
2016-2025
Chinese Academy of Sciences
2016-2025
Guangxi Medical University
2025
First Affiliated Hospital of GuangXi Medical University
2025
Shandong University
2022-2024
State Key Laboratory of Environmental Chemistry and Ecotoxicology
2024
University of Chinese Academy of Sciences
2023
Jianghan University
2015-2022
Beijing Administration Institute
2015-2019
Easily separable humic acid coated magnetite (HA-Fe3O4) nanoparticles are employed for effective adsorption and reduction of toxic Cr(VI) to nontoxic Cr(III). The is under acidic, neutral, basic pH conditions. chromium nicely fits the Langmuir isotherm model, removal from aqueous media by HA-Fe3O4 particles follows pseudo-second-order kinetics. Characterization Cr-loaded materials X-ray absorption near edge structure spectroscopy (XANES) indicates was reduced Cr(III) while valence state iron...
Photothermal catalysis integrates the strengths of photocatalytic and thermochemical processes has gained significant attention in driving energy-consuming reactions such as CO2 reduction pollutant decomposition. It is particular interest for efficient utilization full solar spectrum via capturing shorter- longer-wavelength light photocatalysis photothermal conversion, respectively. As this rapid-growing research area begins to raise answer fundamental questions about constructing catalytic...
Whole rice plants (Oryza sativa L.) were collected at different typical mercury (Hg) contaminated sites during regular harvest periods to investigate the distribution of inorganic (IHg) and methylmercury (MeHg) in tissues. The whole divided into seed (brown rice), hull, root, stalk leaf. Elevated IHg MeHg concentrations observed cultivated Hg mining area compared those obtained from control site, which attributed contamination soil compartments by historical large-scale mining/smelting...
In the presence of iron (Fe), dissolved organic matter (DOM) may bind considerable amounts arsenic (As), through formation Fe-bridged As−Fe-DOM complexes and surface complexation As on DOM-stabilized Fe-colloids (collectively referred to as complexation). However, direct (e.g., chromatographic spectroscopic) evidence fundamental kinetic stability constants have been rarely reported for this complexation. Using a size exclusion chromatography (SEC)-UV-inductively coupled plasma mass...
Monomethylarsonic acid (MMA) and dimethylarsinic (DMA) are used as herbicides in the agriculture industry. We have demonstrated that MMA DMA readily degraded upon TiO2 photocatalysis. is oxidized to primary oxidation product, which subsequently inorganic arsenate, As(V). The adsorption of on Ti02 surface was measured a function initial arsenic concentration solution pH. pH influences photocatalytic degradation similar degree, due speciation substrates charge mineralization by photocatalysis...
Arsenic is one of the most widespread environmental carcinogens and has created devastating human health problems worldwide, yet little known about mechanisms biotransformation in contaminated regions. Methylarsonic acid [MAs(V)], extensively utilized as an herbicide, largely demethylated to more toxic inorganic arsenite, which causes problems. To understand process demethylation methylarsenicals, soil samples commonly used on Florida golf courses were studied. Several extracts found...
Understanding the mechanism of nanosilver-dependent antibacterial activity against microorganisms helps optimize design and usage related nanomaterials. In this study, we prepared four kinds 10 nm-sized silver nanoparticles (AgNPs) with dictated surface chemistry by capping different ligands, including citrate, mercaptopropionic acid, mercaptohexanoic sulfonic acid. Their surface-dependent activities were investigated. Owing to weak bond Ag, short carbon chain, low ion attraction,...
Redox-active quinone and nonquinone moieties represent the electron exchange capacity (EEC) of natural organic matter (NOM), playing an important role in transfer link microbes transformation contaminants/metal minerals. However, corresponding quinone/phenol their respective influence on EECs during reduction reoxidation remain poorly characterized. Besides, it is still controversial whether nonquinones donate or accept electrons. Herein, we demonstrated that NOM after can form new...
Natural organic matter (NOM) exhibits a distinctive electron-donating capacity (EDC) that serves pivotal role in the redox reactions of contaminants and minerals through transformation phenolic moieties. However, ambiguity molecular pathways (MTPs) engender EDC during NOM oxidation remains significant issue. Here, MTPs contribute to were investigated by identifying oxidized products model compounds samples direct or mediated electrochemical (DEO MEO, respectively) using Fourier transform ion...
Peatlands store one-third of the world's soil organic carbon. Globally increased fires altered peat matter chemistry, yet redox property and molecular dynamics peat-dissolved (PDOM) during remain poorly characterized, limiting our understanding postfire biogeochemical processes. Clarifying these dynamic changes is essential for effective peatland fire management. This study demonstrates temperature-dependent in electron exchange capacity (EEC) PDOM by simulating burning, significantly...
Wood treated with chromated copper arsenate (CCA) is primarily disposed within construction and demolition (C&D) debris landfills, wood monofills municipal solid waste (MSW) landfills as alternative disposal options. This study evaluated the extent speciation of arsenic leaching from containing CCA-treated wood. In control lysimeters where untreated was used, dimethylarsinic acid (DMAA) represented major species. The dominant species differed in wood, As(V) greatest monofill C&D As(III) MSW...