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New developments in planar array infrared spectroscopy.

Isabelle Pelletier·Christian Pellerin·D Bruce Chase·John F Rabolt
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Abstract

A planar array infrared (PA-IR) spectrograph offers several advantages over other infrared approaches, including high acquisition rate and sensitivity. However, it suffers from some important drawbacks, such as a limited spectral range and a significant curvature of the recorded spectral images, which still need to be addressed. In this article, we present new developments in PA-IR spectroscopy that overcome these drawbacks. First, a data processing method for the correction of the curvature observed in the spectral images has been developed and refined. In addition, a dual-beam instrument that allows the simultaneous recording of two independent spectral images has been developed. These two improvements have been combined to demonstrate the real-time background correction capability of PA-IR instruments. Finally, the accessible spectral range of the PA-IR spectrograph has been extended to cover simultaneously the methylene stretching (3200-2800 cm(-1)) and the finger-print (2000-1000 cm(-1)) spectral regions.

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AlgorithmsEquipment DesignEquipment Failure AnalysisHydrocarbonsImage EnhancementMethaneOnline SystemsPolystyrenesRefractometryReproducibility of ResultsSensitivity and SpecificitySpectrophotometry, InfraredTransducersComparative StudyEvaluation StudyJournal ArticleResearch Support, Non-U.S. Gov'tResearch Support, U.S. Gov't, Non-P.H.S.Research Support, U.S. Gov't, P.H.S.Validation Study

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Isabelle Pelletier, Christian Pellerin, D Bruce Chase, John F Rabolt. 2005. New developments in planar array infrared spectroscopy.. https://doi.org/10.1366/0003702053085043

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