Simultaneous measurement of two compounds in aqueous solution with dual quantum cascade laser absorption spectroscopy

被引：14
|
作者：
Schaden, S [1 ]
Domínguez-Vidal, A [1 ]
Lendl, B [1 ]
机构：
[1] Tech Univ Vienna, Inst Chem Technol & Analyt, A-1060 Vienna, Austria
来源：
APPLIED PHYSICS B-LASERS AND OPTICS | 2006年 / 83卷 / 01期
关键词：
D O I：
10.1007/s00340-006-2133-1
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Two pulsed Fabry-Perot quantum cascade lasers (QCL) have been employed for the simultaneous measurement of two analytes in aqueous solutions. 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 mu m 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 quantitative information about the analytes, even when they show overlapping absorption bands typically found in condensed phase.
引用
收藏
页码：135 / 139
页数：5
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