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Scholars Day: April 11, 2012

Analysis of Drinking Water for Trihalomethanes by Membrane-Introduction GC-MS

Chlorination is one of the most widely used and successful drinking water disinfection processes in the world; however it forms halogenated disinfection by-products, such as trihalomethanes (THMs), which are considered to be possible carcinogens and precursors of more toxic compounds. The purpose of this research was to develop and optimize a relatively inexpensive and solvent free membrane-based GC-MS method for the analysis of drinking water for THMs. Several parameters, such as purge time and injection port temperature were optimized. Studies were also performed to determine a suitable internal standard compound for the developed method. Drinking water samples collected at The College at Brockport, SUNY had total THM concentrations between 50 to 60 μg L-1. The average method detection limit, accuracy, and precision values were less than 2.0 μg L-1, 117%, and 8.2% respectively. Additional drinking water samples were analyzed from Tennessee and Texas to evaluate the performance of the method in varied water matrices.

Please note that presentation times are approximate. If you are interested in attending sessions with multiple presentations, please be in the room at the start of the session.
Presenter: Carissa Williams (Undergraduate Student)
Topic: Chemistry
Location: 29 Hartwell
Time: 10:45 am Session II