Observation of a Brine Layer on an Ice Surface with an Environmental Scanning Electron Microscope at Higher Pressures and Temperatures

0431976 - ÚPT 2015 RIV US eng J - Článek v odborném periodiku
Krausko, J. - Runštuk, Jiří - Neděla, Vilém - Klán, P. - Heger, D.
Observation of a Brine Layer on an Ice Surface with an Environmental Scanning Electron Microscope at Higher Pressures and Temperatures.
Langmuir. Roč. 30, č. 19 (2014), s. 5441-5447. ISSN 0743-7463
Grant CEP: GA ČR(CZ) GA14-22777S; GA MŠMT(CZ) LO1212
Klíčová slova: microstructural characterization * chemical-properties * organic-molecules * SEM
Kód oboru RIV: JA - Elektronika a optoelektronika, elektrotechnika
Impakt faktor: 4.457, rok: 2014

Observation of a uranyl-salt brine layer on an ice surface using backscattered electron detection and ice surface morphology using secondary-electron detection under equilibrium conditions was facilitated using an environmental scanning electron microscope (ESEM) at temperatures above 250 K and pressures of hundreds of Pa. The micrographs of a brine layer over ice grains prepared by either slow or shock freezing provided a complementary picture of the contaminated ice grain boundaries. Fluorescence spectroscopy of the uranyl ions in the brine layer confirmed that the species exists predominately in the solvated state under experimental conditions of ESEM.
Trvalý link: http://hdl.handle.net/11104/0236483