[Zurück]

M. Koelhed, S Schaden, B. Karlberg, B. Lendl:
"On-line hyphenation of quantum cascade laser and capillary electrophoresis";
Journal of Chromatography A, 1083 (2005), S. 199 - 204.

The authors report the first successful hyphenation of a Fabry Perot quantum cascade (QC) laser to a capillary electrophoresis system. This involved use of a dedicated IR-transparent flow cell, made of CaF2, constructed by SU-8 based lithog. and low temp. wafer bonding techniques. Adenosine, guanosine, xanthosine and adenosine-5'-monophosphate were sepd. in a borate-contg. sepn. electrolyte (10 mM, pH 9.3). Functional group (carbohydrate) detection was accomplished by use of the 1080 cm-1 emission line of the available QC-laser. The assessable optical path length could be increased, from the normally available 10-15 mm in CE-FTIR analyses, to 60 mm using this powerful mid-IR laser and aq. solns.

http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC05937120

http://publik.tuwien.ac.at/files/pub-tch_4951.pdf