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Determination of Sugar Compounds in Atmospheric Aerosols by Liquid Chromatography Combined with Positive Electrospray Ionization Mass Spectrometry by Eric Chun Hong Wan; Jian Zhen Yu is a Chemistry article available to read on EtoBox.
What is Determination of Sugar Compounds in Atmospheric Aerosols by Liquid Chromatography Combined with Positive Electrospray Ionization Mass Spectrometry about?
We here report a method for the determination of sugar compounds of known presence in atmospheric aerosols using liquid chromatography (LC) combined with positive electrospray ionization mass spectrometry (MS). The target analytes include C(3)-C(6) monosaccharide alcohols (glycerol, erythritol, xylitol, mannitol), C(5)-C(6) monosaccharides (xylose, glucose, and levoglucosan), a disaccharide (sucrose), and a trisaccharide (melezitose). A mobile phase consisting of 20% 10 mM aqueous ammonium acetate, 8% methanol, and 72% water was found to provide abundant [M+NH(4)](+) adduct ions when coupled with electrospray ionization. Use of a polymer-based amino analytical column resolved the target compounds from the bulk solvent and provided limited separation among the target compounds. The target analytes were quantified using their [M+NH(4)](+) ions. Sample pretreatment was greatly simplified in comparison with the more commonly used gas chromatographic methods. It involved extraction of aerosol filters in methanol, evaporation of the solvent, and reconstitution with 5 mM ammonium acetate in water prior to the LC-MS analysis. The analyte recoveries were measured at the levels of 100, 500 a
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- Author
- Eric Chun Hong Wan; Jian Zhen Yu
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 1873-3778)
- Published
- 2006
- Language
- EN
- Field
- Chemistry (Physical Sciences)