Počet záznamů: 1
Scanning electron microscopic imaging of surface effects in desorption and nano-desorption electrospray ionization
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SYSNO ASEP 0363441 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Scanning electron microscopic imaging of surface effects in desorption and nano-desorption electrospray ionization Tvůrce(i) Kaftan, Filip (UOCHB-X)
Kofroňová, Olga (MBU-M) RID, ORCID
Benada, Oldřich (MBU-M) ORCID, RID
Lemr, Karel (MBU-M) RID, ORCID
Havlíček, Vladimír (MBU-M) RID, ORCID
Cvačka, Josef (UOCHB-X) RID, ORCID
Volný, Michael (MBU-M) ORCIDCelkový počet autorů 7 Zdroj.dok. Journal of Mass Spectrometry. - : Wiley - ISSN 1076-5174
Roč. 46, č. 3 (2011), s. 256-261Poč.str. 6 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova ionization ; DESI ; nano-DESI ; electron microscopy ; mass spectrometry Vědní obor RIV CF - Fyzikální chemie a teoretická chemie CEP GPP206/10/P018 GA ČR - Grantová agentura ČR LC545 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy ME10013 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy CEZ AV0Z40550506 - UOCHB-X (2005-2011) AV0Z50200510 - MBU-M (2005-2011) UT WOS 000288463900003 DOI 10.1002/jms.1888 Anotace Scanning electron microscopy was used to investigate rivulets that are formed on the analyzed surface during desorption electrospray ionization (DESI) experiment. Ferromagnetic nanoparticles added to the spray solvent in a form of colloid solution functioned as an additional surface probe. The existence of the rivulets was confirmed on glass and newly demonstrated on two different types of porous PTFE. The results show that in standard DESI set-up the rivulets are arranged into very regular shapes. Same rivulets were obtained in DESI experiments without high voltage on the sprayer. However, no such rivulets or any other regular patterns were found on a surface in nano-DESI (nanospray DESI without the carrier nebulizing gas) experiments. This indicates that symmetrical rivulets are created by the hydrodynamical rather than electrostatic forces. It was also demonstrated that blocking the rivulets by a simple physical barrier did not influence known surface charging effects. Pracoviště Ústav organické chemie a biochemie Kontakt asep@uochb.cas.cz ; Kateřina Šperková, Tel.: 232 002 584 ; Viktorie Chládková, Tel.: 232 002 434 Rok sběru 2012
Počet záznamů: 1