Environmental Science and Management (ESM)
Bayer School of Natural and Environmental Sciences
H. M. Skip Kingston
Bruce D. Beaver
Daniel K. Donnelly
alkyltin compounds, aqueous ammonia species, carbon sequestration, electrospray ioniziztion/time-of-flight mass spect, gas chromatography/mass spectrometry
NETL Project Abstract: This study constitutes an application of electrospray ionization time-of-flight mass spectrometry (ESI/TOF-MS) for the analysis of aqueous ammonia chemical species produced in a model reactor developed by The National Energy Technology Laboratory (NETL) of the US Department of Energy. The reactor is the result of experimental research performed by NETL on applying aqueous ammonia solution for the simultaneous reduction of acidic gaseous emission from fossil fuel-fired utility plants. The goal of using ESI/TOF-MS was to evaluate NETL process efficiency through analysis of the aqueous ammonia species present at various points aqua ammonia scrubber process, and to validate a mathematical model, developed by Duquesne University, used to predict equilibrium species at various points in the aqua ammonia scrubber process.
Organotin Project Abstract: This study constitutes exploratory research on the analysis of tributyltin in environmental and biological media. Organotins are toxic to the environment, bioaccumulate, and are endocrine disruptors. Tributyltin is an organotin that is persistently present in both the terrestrial and aquatic environments. Tributyltin degrades into dibutyltin (DBT), monobutyltin (MBT), and eventually the tin ion. Butyltin compounds show a pattern of decreasing in toxicity as it degrades, and butyl groups are lost. The research primarily focused on the derivitization of butyltin species for gas chromatography/mass spectrometry (GC/MS) analysis.
Stutz, K. (2006). Model Validation for Aqua Ammonia Scrubber Process and Exploratory Research into Alkyltin Pollutants: Alkyltin Method Evaluations (Master's thesis, Duquesne University). Retrieved from https://dsc.duq.edu/etd/1250