U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PUBLICATIONS

Pairwise Alignment of Chromatograms using a Fisher-Rao Metric

Published

Author(s)

William E. Wallace, Anuj Srivastava, Kelly H. Telu, Yamil Simon

Abstract

A new approach to aligning chromatograms is introduced and applied to examples of metabolite identification by liquid chromatography mass spectrometry (LC MS). A square root representation of the chromatogram’s derivative coupled with a Fisher Rao Riemannian metric enables the computation of relative differences between chromatograms. Minimization of these differences brings the chromatograms into alignment. Application to a complex sample, NIST Standard Reference Material 1950 Metabolites in Human Plasma, analyzed by two different LC MS methods is described.
Citation
Analytica Chimica ACTA
Volume
841
Pub Type
Journals

Download Paper

https://doi.org/10.1016/j.aca.2014.07.004

Keywords

alignment, chromatography, metabolomics, registration, retention time, warping
Analytical chemistry, Biomanufacturing and Statistical analysis

Citation

Wallace, W. , Srivastava, A. , Telu, K. and Simon, Y. (2014), Pairwise Alignment of Chromatograms using a Fisher-Rao Metric, Analytica Chimica ACTA, [online], https://doi.org/10.1016/j.aca.2014.07.004 (Accessed October 11, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created September 2, 2014, Updated November 10, 2018