## Files in this item

FilesDescriptionFormat

application/vnd.openxmlformats-officedocument.presentationml.presentation

1460660.pptx (3MB)
PresentationMicrosoft PowerPoint 2007

application/pdf

3980.pdf (16kB)
AbstractPDF

## Description

 Title: DETECTION OF TRACE AMOUNT OF WATER IN VOLATILE ORGANIC COMPOUNDS BY A K-BAND MOLECULAR ROTATIONAL RESONANCE SPECTROSCOPY Author(s): Twagirayezu, Sylvestre Contributor(s): Neill, Justin L.; Mikhonin, Alex ; Muckle, Matt ; Singh, Sandeep C Subject(s): Spectroscopy as an analytical tool Abstract: Trace amount of water has been detected in ethanol (CH$_{3}$CH$_{2}$OH) and methanol (CH$_{3}$OH) using a K-Band BrightSpec Microwave Rotational Resonance (MRR) spectrometer in the 18-26 GHz frequency range. The design of this instrument is based on segmented Chirped Pulse Fourier Transform microwave wave (CP-FTMW) spectroscopy, which exploits recent advances in digital electronics to allow fast measurement of broadband rotational spectra of polar molecules. The analysis of the observed rotational spectra reveals the presence of a weak rotational line shape of water due to sensitivity of MRR to polar volatile organic compounds . The capability for K-band MRR to extract water in a such chemical environment has been further examined and validated by spiking samples with known small amount of water. The resulting linear curves allowed the determination of limit of detections at ppm level. These findings suggest that K-band MRR has potential to be useful as a spectroscopic tool for fast detection of water in volatile organic compounds or other raw materials. Issue Date: 2019-06-18 Publisher: International Symposium on Molecular Spectroscopy Genre: Conference Paper / Presentation Type: Text Language: English URI: http://hdl.handle.net/2142/104409 DOI: 10.15278/isms.2019.TL03 Rights Information: Copyright 2019 Sylvestre Twagirayezu Date Available in IDEALS: 2019-07-152020-01-25
﻿