Chienthavorn O, Smith RM, Saha S, Wilson ID, Wright B, Taylor SD, Lenz EM. Superheated water chromatography-nuclear magnetic resonance spectroscopy and mass spectrometry of vitamins.
J Pharm Biomed Anal 2004;
36:477-82. [PMID:
15522520 DOI:
10.1016/j.jpba.2004.07.023]
[Citation(s) in RCA: 28] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2004] [Accepted: 07/18/2004] [Indexed: 10/26/2022]
Abstract
The water-soluble vitamins, pyridoxine, riboflavin, and thiamine, were separated by reversed-phase liquid chromatography using hot or superheated water as the mobile phase and were detected using a range of detectors, including ultraviolet and fluorescence spectroscopy and mass spectrometry. By using deuterium oxide as the eluent, direct on-line nuclear magnetic resonance spectra could be obtained with minimal spectral interference from the mobile phase. Some of the compounds showed deuterium exchange of alkyl-protons when separated at high temperatures.
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