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Excited State Dissolved Organic Matter Reactivity with Sulfa Drugs
Triplet excited dissolved organic matter (3DOM*) is as an important photo-produced reactive intermediate that impacts pollutant and carbon cycling in natural waters. Sulfonamide antibiotics (sulfa drugs), a class of wide-use pharmaceuticals that eventually make their way into our water sources, have been shown to be degraded by DOM. However, conflicting reports of reactivity when using DOM from different sources (e.g. microbial- vs. plant-derived) have created some open questions. The goal of this master’s thesis is to better understand the reactivity of DOM with sulfa drugs as a function of DOM source. The project will utilize time-resolved laser spectroscopy to probe these questions. Candidates that are interested in mechanistic organic chemistry, environmental fate of pharmaceuticals, and photochemistry should apply.