Zeitschriftenartikel:
S Schaden, A. Domínguez-Vidal, B. Lendl:
"Simultaneous measurement of two compounds in aqueous solution with dual quantum cascade laser absorption spectroscopy";
Applied Physics B - Lasers and Optics,
83
(2006),
1;
S. 135
- 139.
Kurzfassung englisch:
Two pulsed Fabry-Perot quantum cascade lasers (QCL) were employed for the simultaneous measurement of two analytes in aq. solns. Two laser beams (1393 and 1080 cm-1) were combined by an optical system of parabolic mirrors and a ZnSe-beam splitter. Measurements were made in transmission using a 41 mm CaF2-flow cell and a mercury-cadmium-telluride (MCT) detector. Using glucose and sodium acetate as model analytes, the measurements show the potential of dual QCL absorption spectroscopy for analyte specific detection and background compensation. The use of the two lasers gives quant. information about the analytes, even when they show overlapping absorption bands typically found in condensed phase.
Erstellt aus der Publikationsdatenbank der Technischen Universität Wien.