Helen K. Gerardi

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Helen K. Gerardi is principal scientist at Ashland,

Articles

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Determining Low PPB Levels of Nitrite in Polymeric Excipients

Helen K. Gerardi;Lawrence Feeley;Paul Suszczynski;Zachary Digby;Fan Wu

September 9th 2024

In this paper, the authors introduce a method that combines ion exchange chromatography with an easier-to-perform, simpler one-step post-column derivatization that is selective to nitrite and visible spectrophotometric detection to allow high sample loading volumes without affecting resolution.

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