Advisor(s)

Christopher Spiese, PhD
Ohio Northern University
Chemistry & Biochemistry, Science, Technology, and Mathematics
c-spiese.1@onu.edu

Document Type

Poster

Location

ONU McIntosh Center; Activities Room

Start Date

22-4-2022 10:00 AM

End Date

22-4-2022 11:00 AM

Abstract

Past research has focused primarily on the quantity of phosphorus in aquatic ecosystems. However, speciation of P can provide details such as bioavailability and source. The chemical type of P dictates sorption behavior in sediment, making characterization important. However, traditional assays do not readily ascertain speciation. This work analyzed P speciation by Nuclear Magnetic Resonance (NMR) after applying various extraction techniques. While orthophosphate was effectively extracted by all methods tested, additional P forms were found with the Olsen and SEDEX methods. The presence of reduced P forms indicates that more in-depth analyses of aquatic systems may aid in better understanding P biogeochemistry.

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Apr 22nd, 10:00 AM Apr 22nd, 11:00 AM

Phosphorus Extraction from Sediment for NMR Analysis

ONU McIntosh Center; Activities Room

Past research has focused primarily on the quantity of phosphorus in aquatic ecosystems. However, speciation of P can provide details such as bioavailability and source. The chemical type of P dictates sorption behavior in sediment, making characterization important. However, traditional assays do not readily ascertain speciation. This work analyzed P speciation by Nuclear Magnetic Resonance (NMR) after applying various extraction techniques. While orthophosphate was effectively extracted by all methods tested, additional P forms were found with the Olsen and SEDEX methods. The presence of reduced P forms indicates that more in-depth analyses of aquatic systems may aid in better understanding P biogeochemistry.