A5026573928- Analytical chemistry methods development
- Heavy metals in environment
- Arsenic contamination and mitigation
- Mass Spectrometry Techniques and Applications
- Air Quality and Health Impacts
- Heavy Metals in Plants
- Atmospheric chemistry and aerosols
- Analytical Chemistry and Chromatography
- Heavy Metal Exposure and Toxicity
- Fermentation and Sensory Analysis
- Electrochemical Analysis and Applications
- Radioactivity and Radon Measurements
- Mercury impact and mitigation studies
- Spectroscopy and Chemometric Analyses
- Ion-surface interactions and analysis
- Biomedical and Engineering Education
- Pesticide Residue Analysis and Safety
- Combustion and Detonation Processes
- Coal and Its By-products
- Innovative Teaching Methods
- Fault Detection and Control Systems
- Problem and Project Based Learning
Mount Royal University
2023-2024
Queen's University
2014-2021
A simple and fast method was developed for risk assessment of As, Cr, Se in food, which is demonstrated here using three cooked uncooked rice samples (basmati as well organic white brown rice). The bioaccessible fraction first determined through online leaching minicolumns (maintained at 37 °C) sequentially with artificial saliva, gastric juice, intestinal juice while continuously monitoring potentially toxic elements (As, Se) by inductively coupled plasma mass spectrometry (ICPMS). Then, a...
Environmental context Arsenic can be found in all environmental compartments a large number of chemical forms varying toxicity. We performed an inter-laboratory comparison study focusing on quantitation some the most toxic arsenic seven different biological materials and very good agreement among submitted results. Certification studied will provide suitable quality control samples for environmentally relevant concentrations food products biota.Rationale (As) speciation analysis matrices has...
Atmospheric particles from natural and anthropogenic sources contain reactive trace elements (TE) of importance to aerosol multiphase chemistry, health risk assessment inhalation ingestion, ocean productivity. While the dissolution TE model field-collected in various aqueous phase conditions relevance liquid water bodily fluids have received attention, there remain knowledge gaps on (a) benchmark materials methods for standardizing experiments (b) time scales previously published reports...
The risk from potentially toxic elements in airborne particulate matter collected on air filters is assessed using a batch <italic>in vitro</italic> method.
The scope of this preliminary study revolves around investigating the effectiveness experiential learning in upper-year science laboratory courses a post-pandemic era. In we have explored two key questions: 1. Can facilitate independent inquiry an undergraduate era? 2. Do incoming students feel prepared to carry out in-person, hands-on, experiments By exploring these questions through student reflections and perceptions advanced analytical chemistry inquiry-based course, hope acknowledge...
The content and multiphase chemistry of iron (Fe) in multicomponent atmospheric aerosols are important to global climate oceanic models. To date, reported dissolution rates Fe span orders magnitude with no quantifiable dependency on the basic minerals that coexist Fe. Here, we report simulated dark aging fully characterized multielement particles under acidic conditions (bulk pH 1 or 3) without oxalic acid pyrocatechol. Our main findings (a) total amount Ca Mg was higher coal fly ash than...
This study used batch and online methods to accurately determine how much arsenic (As), chromium (Cr), selenium (Se), cadmium (Cd), lead (Pb), copper (Cu), iron (Fe), zinc (Zn) can be leached from baby rice cereals into a baby’s body. Speciation analysis of the saliva gastric juice leachates was conducted further assess risk associated with continued consumption cereal for infants. A simple 15 min chromatographic successfully separated eight species consisting As(III), monomethylarsonic acid...