A5009046602- Analytical Chemistry and Chromatography
- Mass Spectrometry Techniques and Applications
- Advanced Energy Technologies and Civil Engineering Innovations
- Atmospheric and Environmental Gas Dynamics
- Metabolomics and Mass Spectrometry Studies
- Advanced Chemical Sensor Technologies
- Hydrocarbon exploration and reservoir analysis
- Microfluidic and Capillary Electrophoresis Applications
- Analytical chemistry methods development
- Advanced Proteomics Techniques and Applications
- Pesticide Residue Analysis and Safety
- Chromatography in Natural Products
- Hydraulic Fracturing and Reservoir Analysis
- Geochemistry and Geologic Mapping
- Bacterial Identification and Susceptibility Testing
- Groundwater flow and contamination studies
- Molecular spectroscopy and chirality
- Forensic Toxicology and Drug Analysis
- Toxic Organic Pollutants Impact
- Protein purification and stability
- Petroleum Processing and Analysis
- Cannabis and Cannabinoid Research
- Molecular Sensors and Ion Detection
- Chemical Synthesis and Analysis
- Reservoir Engineering and Simulation Methods
The University of Texas at Arlington
2015-2024
Bernstein Center for Computational Neuroscience Tübingen
2016-2020
University of South Carolina
2019
Box (United States)
2017
Korea University
2010
Palacký University Olomouc
2009
University of Vienna
2004-2006
Virginia Tech
2002-2003
Natural gas has become a leading source of alternative energy with the advent techniques to economically extract reserves from deep shale formations. Here, we present an assessment private well water quality in aquifers overlying Barnett Shale formation North Texas. We evaluated samples 100 drinking wells using analytical chemistry techniques. Analyses revealed that arsenic, selenium, strontium and total dissolved solids (TDS) exceeded Environmental Protection Agency's Drinking Water Maximum...
The analysis of highly hydrophilic, ionic, and polar compounds has been performed by HILIC-ESI-MS for the last few years. use low aqueous/high organic solvent content in HILIC separation mobile phase is almost ideal ESI-MS detection many cases, resulting increased sensitivity. Although addition modifiers such as acids or salts necessary some circumstances a good separation, optimum concentrations used are still amenable analysis, showing deleterious effects. In this review, mechanism ESI ion...
None of the current biodegradable polymers can function as both implant materials and fluorescent imaging probes. The objective this study was to develop aliphatic photoluminescent (BPLPs) their associated cross-linked variants (CBPLPs) for biomedical applications. BPLPs are degradable oligomers synthesized from biocompatible monomers including citric acid, diols, various amino acids via a convenient cost-effective polycondensation reaction. be further into elastomeric polymers, CBPLPs. We...
Analytical performance characteristics of a new vacuum ultraviolet (VUV) detector for gas chromatography (GC) are reported. GC-VUV was applied to hydrocarbons, fixed gases, polyaromatic fatty acids, pesticides, drugs, and estrogens. Applications were chosen feature the sensitivity universal detection capabilities VUV detector, especially cases where mass spectrometry has been limited. Virtually all chemical species absorb have unique phase absorption cross sections in approximately 120-240...
The exploration of unconventional shale energy reserves and the extensive use hydraulic fracturing during well stimulation have raised concerns about potential effects oil gas extraction (UOG) on environment. Most accounts groundwater contamination focused primarily compositional analysis dissolved gases to address whether UOG activities had deleterious overlying aquifers. Here, we present an 550 samples collected from private public supply water wells drawing aquifers Barnett formation...
Trillions of liters wastewater from oil and gas extraction are generated annually in the US. The contribution unconventional drilling operations (UDO), such as hydraulic fracturing, to this volume will likely continue increase foreseeable future. chemical content UDO varies with region, operator, elapsed time after production begins. Detailed analyses may be used determine its content, select appropriate treatment options, identify source cases environmental contamination. In study, one...
A time interval deconvolution (TID) method was devised to integrate a gas chromatography-vacuum ultraviolet (GC-VUV) data set in order provide bulk characterization and speciation of finished gasoline samples. The demonstrated using commercially available standard tested on series ASTM proficiency Very good correlation (R2 ∼ 0.97-0.99) between GC-VUV measurements various methods achieved. key advantage the TID applied sets is that large number coelution events can be tolerated, resulting...
Abstract The relationship between metal levels in the Olt River ecosystem southern Romania (measured during 2018‒2019, with 1064 sediment and water samples) daily climate data were explored to assess need for targeted source identification mitigation strategies. In 2018, there was a strong Pb, As, Cd, Hg contents temperature ( r > 0.8, p < 0.001). Mercury sediments had positive correlation precipitation, correlated minimum May 2018 0.01). July 2019, heavy metals positively...
Four ionic liquid (IL) columns, SLB-IL59, SLB-IL60, SLB-IL65, and SLB-IL111, were evaluated for more rapid analysis or improved resolution of long-chain methyl ethyl esters omega-3, omega-6, additional positional isomeric stereoisomeric blends fatty acids found in fish oil, flaxseed potentially complicated compositions. The three structurally distinct IL columns provided shorter retention times symmetric peak shapes the acid than a conventional polyethylene glycol column (PEG), resolving...