Alkali Metal Cationization of Alkyl Glucosides under Electrospray lonization Conditions

摘要

Alkyl glucosides have been studied by electrospray ionization mass spectrometry.The effect of the hydrophobic and the hy-drophilic parts of these compounds on the stability of [M + Na]~+ ions has been evaluated by mass spectra at growing cone voltages.The longer the hydrophobic or the hydrophilic part,the higher the stability of these ions.It has been also found that solvent used affects the abundances of [M + Na]~+ ions.In order to check if the radii of alkali metal ions influence the stability of their adducts with the compounds studied,the mass spectra have been recorded for solution containing lithium and potassium ions.The cations of smaller radius form more stable adducts,especially with the compounds having longer hydro-phobic parts.