Clayton P. Donald

Articles

Ionization Efficiency for Environmentally Relevant Compounds Using APPI Versus EI

Prakriya Shrestha;Katherine A. Maloof;Alayna Stephens;Clayton P. Donald;Kevin R. Tucker

September 1st 2021

Atmospheric pressure photoionization (APPI) and electrospray ionization (ESI) are assessed for the mass spectrometry (MS) quantification of pharmaceuticals frequently detected in environmental waters, including antibiotics, beta blockers, and selective-serotonin reuptake inhibitors.

Ionization Efficiency for Environmentally Relevant Compounds Using Atmospheric Pressure Photoionization Versus Electrospray Ionization (ESI)

Prakriya Shrestha;Katherine A. Maloof;Alayna Stephens;Clayton P. Donald;Kevin R. Tucker

December 1st 2020

Atmospheric pressure photoionization (APPI) and electrospray ionization (ESI) are compared for the mass spectrometry (MS) quantitation of pharmaceuticals frequently detected in environmental waters, including antibiotics, beta blockers, and selective-serotonin reuptake inhibitors.

Ionization Efficiency for Environmentally Relevant Compounds Using Atmospheric Pressure Photoionization Versus Electrospray Ionization

Kevin R. Tucker;Katherine A. Maloof;Alayna Stephens;Clayton P. Donald;Prakriya Shrestha

October 1st 2019

In this study, atmospheric pressure photoionization (APPI) is compared to the default ionization method, electrospray ionization (ESI), for solution-phase samples. These mass spectrometry methods are compared and optimized relative to artificial wastewater for the detection and quantitation of pharmaceuticals frequently found as environmental contaminants.