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  • 1 Silesian University Institute of Chemistry 9 Szkolna Street 40-006 Katowice Poland
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This paper reviews our findings on the susceptibility of the organic chemically bonded ligands to hydrolytic cleavage from the silica matrix for the most common TLC-type stationary phases, i.e. RP-18, RP-8, CN, and Diol. In our experiments this process was induced by repeated (i.e. one-, two-, four-, and eightfold) development of these phases with mixed mobile phases comprising methanol, water, and buffers of different pH.Quantification of the extent of hydrolytic cleavage of octadecyl, octyl, 3-cyanopropyl, and diol ligands from the silica surface was basically achieved by means of Raman spectroscopy, although other supplementary analytical techniques were also employed-namely elemental (combustion) analysis, thermogravimetry (TG), and differential scanning calorimetry (DSC).

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Journal of Planar Chromatography - Modern TLC
Language English
Size A4
Year of
Foundation
1988
Volumes
per Year
1
Issues
per Year
6
Founder Akadémiai Kiadó
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Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
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Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
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Chief Executive Officer, Akadémiai Kiadó
ISSN 0933-4173 (Print)
ISSN 1789-0993 (Online)

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