Collision cross section calibrants for negative ion mode traveling wave ion mobility-mass spectrometry. Jay G. Forsythe, Anton S. Petrov, Chelsea A. Walker, Samuel J. Allen, Jarrod S. Pellissier, Matthew F. Bush, Nicholas V. Hud, Facundo M. Fernández. Analyst 2015, 140, 6853-6861. (Link|PUBMED)
Abstract. Unlike traditional drift-tube ion mobility-mass spectrometry, traveling-wave ion mobility-mass spectrometry typically requires calibration in order to generate collision cross section (CCS) values. Although this has received a significant amount of attention for positive-ion mode analysis, little attention has been paid for CCS calibration in negative ion mode. Here, we provide drift-tube CCS values for [M − H]− ions of two calibrant series, polyalanine and polymalic acid, and evaluate both types of calibrants in terms of the accuracy and precision of the traveling-wave ion mobility CCS values that they produce.
- For a perspective on this work, please see the feature that appeared on the main page for NASA Astrobiology (Link)
Congratulations to Sam Allen, who just received a Graduate Fellowship from the American Chemical Society Division of Analytical Chemistry! This award is sponsored by Agilent Technologies.
Congratulations to Sam Allen, who has been selected as one of the recipients of the Department of Chemistry’s Graduate Student Merit Fellowships.
The Bush Lab and collaborators are presenting the following posters at the 
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