Počet záznamů: 1

Surface organization of aqueous MgCl2 and application to atmospheric marine aerosol chemistry

  1. 1.
    0342608 - UOCHB-X 2011 RIV US eng J - Článek v odborném periodiku
    Casillas-Ituarte, N. N. - Callahan, K. M. - Tang, CH. Y. - Chen, X. - Roeselová, Martina - Tobias, D. J. - Allen, H. C.
    Surface organization of aqueous MgCl2 and application to atmospheric marine aerosol chemistry.
    Proceedings of the National Academy of Sciences of the United States of America. Roč. 107, č. 15 (2010), s. 6616-6621 ISSN 0027-8424
    Grant CEP: GA MŠk LC512; GA MŠk ME09064
    Výzkumný záměr: CEZ:AV0Z40550506
    Klíčová slova: magnesium chloride * fatty acid * air/aqueous interface
    Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie
    Impakt faktor: 9.771, rok: 2010

    Inorganic salts in marine aerosols play an active role in atmospheric chemistry, particularly in coastal urban regions. The study of the interactions of these ions with water molecules at the aqueous surface helps to elucidate the role of inorganic cations and anions in atmospheric processes. We present surface vibrational sum frequency generation (VSFG) spectroscopic and molecular dynamics (MD) studies of aqueous MgCl-2 surfaces relevant to understanding marine aerosol. Spectroscopy results reveal that the disturbance of the hydrogen bonding environment of the air/aqueous solutions is dependent on the MgCl-2 concentration. At low concentrations (1 M) minor changes are observed. At concentrations above 1 M the hydrogen bonding environment is highly perturbed. The 2.1 M intermediate concentration solution shows the largest SFG response relative to the other solutions including concentrations as high as 4.7 M.
    Trvalý link: http://hdl.handle.net/11104/0185299