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Amino_Acid_KCl_chemRxiv.pdf (3.6 MB)

The Surface Composition of Amino Acid - KCl Solutions is pH-Dependent

submitted on 25.09.2020, 14:51 and posted on 28.09.2020, 12:20 by Geethanjali Gopakumar, Isaak Unger, Clara-Magdalena Saak, Gunnar Öhrwall, Arnaldo Naves de Brito, Tulio Costa Rizuti da Rocha, Christophe Nicolas, Carl Caleman, Olle Björneholm
The manuscript based on X-ray photoelectron spectroscopy on aqueous solutions containing KCl and different amino acids. Our analysis suggests that the presence of the inorganic ions at the surface of the liquid is strongly dependent on the pH of the solution and the type of amino acid.


FAPESP (the Sao Paulo Research Foundation, Process number 2017/11986-5

ANP (Brazil’s National Oil, Natural Gas and Biofuels Agency)

National Council for Scientific and Technological Development CNPq 401581/2016-0

Swedish-Brazilian collaboration STINT-CAPES (9805/2014-01).

Carl Tryggers Foundation

Swedish Research Council (grant 2017-04162)

Swedish Research Council (grant 2018-00740)


Email Address of Submitting Author


Uppsala University



ORCID For Submitting Author


Declaration of Conflict of Interest

None of the authors declares any competing interests with regard to the manuscript.


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