Quantification of Carbohydrates and Related Materials Using Sodium Ion Adducts Produced by Matrix-Assisted Laser Desorption Ionization |
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| Authors: | Sung Hee Ahn Kyung Man Park Jeong Hee Moon Seong Hoon Lee Myung Soo Kim |
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| Affiliation: | 1.Department of Chemistry,Seoul National University,Seoul,Korea;2.Disease Target Structure Research Center, KRIBB,Daejeon,Korea;3.Seoul National University Research Institute for Basic Sciences,Seoul,Korea;4.Center for Nanoparticle Research, Institute for Basic Science (IBS),Seoul,Korea |
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| Abstract: | The utility of sodium ion adducts produced by matrix-assisted laser desorption ionization for the quantification of analytes with multiple oxygen atoms was evaluated. Uses of homogeneous solid samples and temperature control allowed the acquisition of reproducible spectra. The method resulted in a direct proportionality between the ion abundance ratio I([A?+?Na]+)/I([M?+?Na]+) and the analyte concentration, which could be used as a calibration curve. This was demonstrated for carbohydrates, glycans, and polyether diols with dynamic range exceeding three orders of magnitude. |
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