Articles by Karyn M. Usher - Chromatography Online
Articles by Karyn M. Usher

Karyn M. Usher


Articles
Back to the Basics: Considering Carryover, Column Back Pressure, and Wavelength When Developing Chromatographic Methods
October 2, 2013

The parameters that should be considered in the optimization of HPLC methods are explained and then illustrated through the analysis of two commercial agricultural products.

Back to the Basics: Considering Carryover, Column Back Pressure, and Wavelength When Developing Chromatographic Methods
April 1, 2013

The parameters that should be considered in the optimization of HPLC methods are explained and then illustrated through the analysis of two commercial agricultural products.

Phyllis Brown: A Story of Serendipity, Perseverance, Vision, and Chromatography
November 1, 2012

In the 1960s, high performance liquid chromatography (HPLC) was in its infancy and Phyllis Brown was a pioneer at the forefront of the technique.

Separation, Identification, and Quantitation of Water-Soluble Vitamins by HPLC
March 1, 2009

The authors set out to perform a separation of seven water-soluble vitamins without the use of ion-pair reagents.

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