Dr Colin McGill C.McGill3@napier.ac.uk
Associate Professor
Dr Colin McGill C.McGill3@napier.ac.uk
Associate Professor
Rachel H. Ferguson
Kathryn Donoghue
Alison Nordon
David Littlejohn
A miniaturised mid-infrared (MIR) spectrometer attached directly to an in-line immersion probe with an attenuated total reflectance crystal has been used to monitor the progression of the batch reaction of crotonic acid and 2-butanol in toluene. Univariate calibration, using the signal at 1188 cm−1 in the 2nd derivative spectrum, gave accurate (average error, 1.6%) and precise (average relative standard deviation, 5.2%) estimation of 2-butyl crotonate concentrations in the range 0.08–0.49 mol dm−3. Calibration by partial least squares was of no additional benefit in this application. The performance of in-line MIR spectrometry was comparable to that of an off-line reference gas chromatography method and superior to that of other in-line process analysis techniques (near-infrared, Raman or UV-visible spectrometries).
McGill, C. A., Ferguson, R. H., Donoghue, K., Nordon, A., & Littlejohn, D. (2003). In-line monitoring of esterification using a miniaturised mid-infrared spectrometer. Analyst, 128(12), 1467-1470. https://doi.org/10.1039/b311187n
Journal Article Type | Article |
---|---|
Acceptance Date | Oct 30, 2003 |
Online Publication Date | Nov 18, 2003 |
Publication Date | 2003 |
Deposit Date | Jul 9, 2021 |
Journal | The Analyst |
Print ISSN | 0003-2654 |
Electronic ISSN | 1364-5528 |
Publisher | Royal Society of Chemistry |
Peer Reviewed | Peer Reviewed |
Volume | 128 |
Issue | 12 |
Pages | 1467-1470 |
DOI | https://doi.org/10.1039/b311187n |
Public URL | http://researchrepository.napier.ac.uk/Output/2782150 |
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