Share Email Print

Proceedings Paper

Dispersive far-infrared Fourier transform spectrometer
Author(s): Christopher J. Chunnilall; William F. Sherman
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Two Mercury Cadmium Telluride (MCT) detectors have been evaluated for open-path Fourier transform infrared (FT-IR) spectrometry. The first detector was equipped with a standard manufacturers preamplifier; the second detector was equipped with a `linearizing' preamplifier. The two detectors and their respective preamplification systems were evaluated at varied light levels and open-path distances. Chloroform was chosen as an analyte of comparison because it has absorption frequencies at 1220 and 772 cm-1. These two frequencies allow for the visualization of non-linear absorption characteristics. Toluene monitored from a process stack also demonstrates this non-linearity. These data dramatically exhibit the need for a linear detection system in qualitative and quantitative infrared spectrometry.

Paper Details

Date Published: 31 January 1994
PDF: 2 pages
Proc. SPIE 2089, 9th International Conference on Fourier Transform Spectroscopy, (31 January 1994); doi: 10.1117/12.166574
Show Author Affiliations
Christopher J. Chunnilall, King's College London (United Kingdom)
William F. Sherman, King's College London (United Kingdom)

Published in SPIE Proceedings Vol. 2089:
9th International Conference on Fourier Transform Spectroscopy
John E. Bertie; Hal Wieser, Editor(s)

© SPIE. Terms of Use
Back to Top