A5058759995- Water Treatment and Disinfection
- Advanced oxidation water treatment
- Pharmaceutical and Antibiotic Environmental Impacts
- Water Systems and Optimization
- Water Quality Monitoring and Analysis
- Environmental Chemistry and Analysis
- Wastewater Treatment and Reuse
- TiO2 Photocatalysis and Solar Cells
- Chemical Analysis and Environmental Impact
- Fecal contamination and water quality
- Urban Stormwater Management Solutions
- Odor and Emission Control Technologies
- Environmental remediation with nanomaterials
- Advanced Photocatalysis Techniques
- Wastewater Treatment and Nitrogen Removal
- Recycling and Waste Management Techniques
- Advanced Chemical Sensor Technologies
- Mass Spectrometry Techniques and Applications
- Library Science and Information Systems
- Mercury impact and mitigation studies
- Chinese history and philosophy
- Water Quality Monitoring Technologies
- Web and Library Services
- Paranormal Experiences and Beliefs
- Library Collection Development and Digital Resources
University of Toronto
2016-2025
Toronto Public Health
2018-2019
Arizona State University
2015
University of Waterloo
1996-2008
Acadia University
2008
Natural Sciences and Engineering Research Council
1997-2003
Dallas Public Library
1984
N-Nitrosodimethylamine (NDMA) is a probable human carcinogen that forms in drinking water as disinfection byproduct. Several specific precursor chemicals present during chloramination are known but cannot account for the total observed NDMA formation potential (FP) waters. We discovered pharmaceutical of with high FP using liquid chromatography/quadrupole/time-of-flight mass spectrometry (LC/QTOF-MS) screening procedure. The methadone, which used to mitigate heroin withdrawal symptoms and...
Abstract This study compared 3 commonly used quenching agents for dechlorinating samples prior to disinfection byproduct (DBP) analysis under typical drinking water sampling conditions a representative suite of chlorination byproducts. Ascorbic acid and sodium sulfite quenched the residual free chlorine below detection within 5 seconds. Ammonium chloride did not quench with up 70% molar excess, which agrees published ammonium chloride-chlorine chemistry. With respect DBPs, ascorbic worked...
The precise identification of predominant toxic disinfection byproducts (DBPs) from disinfected water is a longstanding challenge. We propose new acellular analytical strategy, the 'Thiol Reactome', to identify thiol-reactive DBPs by employing thiol probe and nontargeted mass spectrometry (MS) analysis. Disinfected/oxidized samples had reduced cellular oxidative stress responses 46 ± 23% in Nrf2 reporter cells when preincubated with glutathione (GSH). This supports as drivers stress. method...
Abstract Polydiallyldimethylammonium chloride (polyDADMAC) and epichlorohydrin-dimethylamine (Epi-DMA) stock olutions were prepared, stored for varying amounts of time, used in bench-scale simulations coagulation/flocculation/sedimentation to determine whether polymer age had an influence on NDMA yields. Stock solution ages ranged from under one hour fifty hours. PolyDADMAC did not significantly affect production. Epi-DMA increased production over a time span 0 5 hours, but 50 The...