Abstract
Abstract By controlling the flow rate of a sample solution, information about clusters existing at the liquid surface were obtained by liquid ionization (LI) mass spectrometry. The relative abundances of binary cluster ions, (C2H5OH)m(H2O)nH+, with large m and n increased with the flow rate, while the abundances of ethanol cluster ions, (C2H5OH)mH+, increased by decreasing the flow rate. Molar ratios of water to ethanol observed were much higher than those observed by other methods.
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