Počet záznamů: 1
Characterization of polydimethylsiloxanes using an off-line combination of supercritical fluid chromatography with matrix-assisted laser desorption ionization mass spectrometry
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SYSNO ASEP 0162199 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Ostatní články Název Characterization of polydimethylsiloxanes using an off-line combination of supercritical fluid chromatography with matrix-assisted laser desorption ionization mass spectrometry Tvůrce(i) Chmelík, Josef (UIACH-O)
Konečný, P. (CZ)
Planeta, Josef (UIACH-O) RID, ORCID
Zdráhal, Zbyněk (UIACH-O)
Vejrosta, Jiří (UIACH-O)
Chmelík jr., J. (CZ)Zdroj.dok. HRC Journal of High Resolution Chromatography - ISSN 0935-6304
Roč. 23, 7/8 (2000), s. 502-506Poč.str. 5 s. Jazyk dok. eng - angličtina Země vyd. DE - Německo Vědní obor RIV CB - Analytická chemie, separace CEP IAA4031802 GA AV ČR - Akademie věd GA203/97/P103 GA ČR - Grantová agentura ČR Anotace Polydimethylsiloxanes in a commercial silicone oil sample were characterized by off-line combinations of supercritical fluid chromatography with two mass spectrometry techniques. SFC was used to separate polydimethylsiloxanes on micropacked capillary columns (lenght 150 mm, i.d. 320 .mu.m, packed by ODS 5 .mu.m particles). The fractions for the identification studies were obtained from an SFC run at defined time intervals, when the restrictor was pulled out from chromatographic flame ionization detector and inserted into a glass vial with acetone. For the identification of individual oligomers, GC-MS was used for low molecular ones and MALDI-TOF MS for higher ones, respectively. The range of determined molecular masses was from 474 to 5500 Da. Pracoviště Ústav analytické chemie Kontakt Iveta Drobníková, drobnikova@iach.cz, Tel.: 532 290 234 Rok sběru 2001
Počet záznamů: 1