Angle resolved electron spectroscopy for measurement of surface segregation phenomena in liquids and solutions |
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| Affiliation: | 1. Department of Chemistry, College of Sciences, Northeastern University, Shenyang 110819, PR China;2. Key Laboratory for Anisotropy and Texture of Materials, School of Materials Science and Engineering, Northeastern University, Shenyang 110819, PR China;1. Key Laboratory of High-Temperature and High-Pressure Study of the Earth’s Interior, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China;2. University of Chinese Academy of Sciences, Beijing, 100049, China;3. Center for Lunar and Planetary Sciences, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China;1. Carré Technologies, Inc., Montreal, Canada;2. Human Movement Biomechanics Research Group, Department of Movement Sciences, KU Leuven, Leuven, Belgium;3. Rehabilitation and Movement Science, University of Vermont, USA;4. Bouvé College of Health Sciences, Northeastern University, Boston, USA;5. Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, USA;6. Department of Industrial and Systems Engineering, University of Florida, Gainesville, USA |
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| Abstract: | The technique of variable take-off electron Spectroscopy is applied for the first time to the investigation of surface segregation phenomena in solutions. It is shown that this approach yields quantitative information on depth concentration profiles in electrolytic solutions. In particular, the mean segregation depth and the solute concentration at the solution-vacuum interface is obtained from measured relative intensity data. This is exemplified for the system tetrabutylammonium iodide in formamide. |
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