A5003145180- Analytical Chemistry and Chromatography
- Metabolomics and Mass Spectrometry Studies
- Water Treatment and Disinfection
- Marine and coastal ecosystems
- NMR spectroscopy and applications
- Molecular spectroscopy and chirality
- Microbial Community Ecology and Physiology
- Water Systems and Optimization
- Membrane Separation Technologies
- Nanoparticle-Based Drug Delivery
- Polar Research and Ecology
- Urban Stormwater Management Solutions
- Wastewater Treatment and Nitrogen Removal
- Isotope Analysis in Ecology
- Protein Interaction Studies and Fluorescence Analysis
- Climate change and permafrost
- Environmental Chemistry and Analysis
- Wastewater Treatment and Reuse
- Dendrimers and Hyperbranched Polymers
- Spectroscopy and Chemometric Analyses
University of Toronto
2007-2016
Southern Nevada Water Authority
2014-2015
Quality Research
2015
The Scarborough Hospital
2011
Dublin City University
2009
Mississippi State University
2009
This article presents research targeted toward the isolation and detection of unique molecular structures from what is believed to be world's most complex organic mixture: dissolved matter (DOM). Hydrophilic interaction chromatography (HILIC) was used separate Suwannee River DOM (SRDOM) into 80 fractions, simplified extent that with nuclear magnetic resonance spectroscopy (NMR) results in many sharp signals are indicative individual compounds, some which identifiable multidimensional NMR....
The interactions of nanomaterials with plasma proteins have a significant impact on their in vivo transport and fate biological fluids. This article discusses the binding human serum albumin (HSA) to poly(amidoamine) [PAMAM] dendrimers. We use protein-coated silica particles measure HSA constants (K(b)) homologous series 19 PAMAM dendrimers aqueous solutions at physiological pH (7.4) as function dendrimer generation, terminal group, core chemistry. To gain insight into mechanisms dendrimers,...
Glaciers and ice sheets are the second largest freshwater reservoir in global hydrologic cycle, onset of climate warming has necessitated an assessment their contributions to sea-level rise potential release nutrients nearby aquatic environments. In particular, dissolved organic matter (DOM) from glacier melt could stimulate microbial activity both glacial ecosystems adjacent watersheds, but this would largely depend on composition material released. Using fluorescence (1)H NMR spectroscopy,...
The substantial heterogeneity of dissolved organic matter (DOM) inhibits detailed chromatographic analysis with conventional detectors as little structural information can be obtained in the presence extensive coelution. Here we examine direct hyphenation high-performance size exclusion chromatography (HPSEC) nuclear magnetic resonance (NMR) spectroscopy to determine how size-distinguished fractions differ composition. results support applicability using HPSEC generate more homogeneous DOM...
The complete database of results from the second Unregulated Contaminant Monitoring Rule (UCMR2) was analyzed in depth for N ‐nitrosodimethylamine (NDMA) occurrence across United States and trends associated with factors reported. Disinfectant type, source waters, regional variability, population density, seasonal variability were all examined potential impacts on NDMA. Detectable levels NDMA found 17% samples 25% treatment plants. other five listed nitrosamines detected less than 1%...
A general technique is described that permits the extraction of a complete 1H NMR spectrum for components in organosoluble mixtures. The approach should find wide range applications considering pure component spectra can be generated without need physical separation. This especially significant synthetic organic chemistry and pharmaceutical industry due to potential isolate product even presence overlapping starting materials, byproducts, or degradation products. viscous oil-based solvent...
ADVERTISEMENT RETURN TO ISSUEPREVCorrespondence/Rebut...Correspondence/RebuttalResponse to Comment on "HILIC-NMR: Toward the Identification of Individual Molecular Components in Dissolved Organic Matter"Gwen Woods and Andre Simpson*View Author Information Department Chemistry, Univerisity Toronto, Ontario, Canada M1C 1A4Cite this: Environ. Sci. Technol. 2011, 45, 13, 5910Publication Date (Web):May 27, 2011Publication History Published online27 May 2011Published inissue 1 July...