Visualization of Impurities on the Surface of Frozen Samples by Environmental Scanning Electron Microscopy

0493328 - ÚPT 2019 US eng A - Abstrakt
Vetráková, L'. - Neděla, Vilém - Runštuk, Jiří
Visualization of Impurities on the Surface of Frozen Samples by Environmental Scanning Electron Microscopy.
Microscopy and Microanalysis. Cambridge University Press. Roč. 24, S1 (2018), s. 1088-1089. ISSN 1431-9276. E-ISSN 1435-8115.
[Microscopy & Microanalysis 2018 Meeting. 05.08.2018-09.08.2018, Baltimore]
Grant CEP: GA MŠMT(CZ) LO1212; GA MŠMT ED0017/01/01
Institucionální podpora: RVO:68081731
Klíčová slova: isualization of impurities * frozen samples * ESEM
Obor OECD: Inorganic and nuclear chemistry

Most of the chemical compounds soluble in water are very poorly soluble in ice. Therefore, when solution is freezing, impurities (solutes) are expelled from the growing ice lattice into unfrozen portion of the solution; they are freeze-concentrated in veins between ice crystals, (micro)pockets within the ice structure, or puddles and grain boundary grooves on the ice surface. The location of the impurities within a frozen sample plays an important role in their reactivity and their availability, as for the impurities located close to the ice surface gas-phase oxidants are more easily accessible, and they can be released back to the environment more readily in comparison with the impurities buried in the frozen bulk.
Trvalý link: http://hdl.handle.net/11104/0286710