Fate of contaminants, such as veterinary antibiotics, pesticides, and pharmaceuticals, depends on the extent of sorption to environmental solids. Recently, we advanced a predictive model for organic cation sorption that uses as a mechanism-specific probe (phenyltrimethylammonium (PTMA), that offers a combined measure of both site abundance and a baseline driving force for sorption via cation exchange) and structural scaling factors derived from literature; we showed that PTMA was an effective probe for non-heterocyclic amine sorption. This work is focused on heterocyclic amines, important substructures of several pharmaceuticals. We explore the sorption of several heterocyclic amines, such as 1,2,3,4- and 5,6,7,8- tetrahydroisoquinoline, onto 30 well-characterized soils and evaluate whether our PTMA-based model can be used to also predict the sorption of heterocyclic amine cations.

Evaluating phenyltrimethylammonium as a probe compound for quantifying heterocyclic amine cation exchange to soils

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.