Skip to content

Research at St Andrews

Terahertz gas-phase spectroscopy: chemometrics for security and medical applications

Research output: Contribution to journalArticle

DOI

Author(s)

P. F. -X. Neumaier, K. Schmalz, J. Borngraeber, R. Wylde, H. -W. Hubers

School/Research organisations

Abstract

We describe a spectrometer consisting of a vector network analyzer, a gas absorption cell, and a quasioptical bench that acquires terahertz spectra of gaseous substances and mixtures. We tested volatile organic compounds that are medical biomarkers or chemicals which can be found on the US Environment Protection Agency list of harmful substances. Absorption spectra at gas pressures between 10 Pa and 5000 Pa were recorded. A subsequent multivariate data analysis demonstrated excellent qualitative and quantitative identification of pure substances and complex mixtures. The applied multivariate algorithms are principal components analysis, partial least square regression and soft independent modelling of class analogy.

Close

Details

Original languageEnglish
Pages (from-to)213-222
Number of pages10
JournalAnalyst
Volume140
Issue number1
Early online date7 Nov 2014
DOIs
Publication statusPublished - 2015

    Research areas

  • Breath analysis, Technology, Cancer

Discover related content
Find related publications, people, projects and more using interactive charts.

View graph of relations

Related by author

  1. Compact corrugated feedhorns with high Gaussian coupling efficiency and -60 dB sidelobes

    McKay, J. E., Robertson, D. A., Speirs, P. J., Hunter, R. I., Wylde, R. J. & Smith, G. M., Jun 2016, In : IEEE Transactions on Antennas and Propagation. 64, 6, p. 2518-2522

    Research output: Contribution to journalArticle

  2. Instrumentation for high sensitivity, high power, millimetre wave, electron paramagnetic resonance

    Smith, G. M., Robertson, D. A., Bolton, D. R., Cruickshank, P. A. S., Motion, C., McKay, J., El Mkami, H., Wylde, R. & Hunter, R. I., 31 Mar 2016, IET Colloquium on Millimetre-Wave and Terahertz Engineering & Technology 2016. 1 ed. London: Institution of Engineering and Technology, Vol. 2016. 5 p.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

  3. Multimode horn antennas for far-infrared astronomy

    Murphy, J. A., Bracken, C., Doherty, S., McAuley, I., Wilson, D., O'Sullivan, C., Trappe, N., Gradziel, M., Ade, P., Gleeson, E., Maffei, B., Lamarre, J-M., Noviello, F., Peacocke, T., Pisano, G., Puget, J-L., Savini, G., Sudiwala, R., Withington, S., Wylde, R. & 1 others, Yurchenko, V., 1 Jan 2014, 8th European Conference on Antennas and Propagation, EuCAP 2014. p. 2580-2582 3 p.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

  4. A spectrometer designed for 6.7 and 14.1 T DNP-enhanced solid-state MAS NMR using quasi-optical microwave transmission

    Pike, K. J., Kemp, T. F., Takahashi, H., Day, R., Howes, A. P., Kryukov, E. V., MacDonald, J. F., Collis, A. E. C., Bolton, D. R., Wylde, R. J., Orwick, M., Kosuga, K., Clark, A. J., Idehara, T., Watts, A., Smith, G. M., Newton, M. E., Dupree, R. & Smith, M. E., Feb 2012, In : Journal of Magnetic Resonance. 215, p. 1-9 9 p.

    Research output: Contribution to journalArticle

Related by journal

  1. Chemical analysis of multicellular tumour spheroids

    Jamieson, L. E., Harrison, D. J. & Campbell, C. J., 21 Jun 2015, In : Analyst. 140, 12, p. 3910-3920

    Research output: Contribution to journalArticle

  2. Simultaneous intracellular redox potential and pH measurements in live cells using SERS nanosensors

    Jamieson, L. E., Jaworska, A., Jiang, J., Baranska, M., Harrison, D. J. & Campbell, C. J., 7 Apr 2015, In : Analyst. 140, 7, p. 2330-2335 6 p.

    Research output: Contribution to journalArticle

  3. Wavelength modulated surface enhanced (resonance) Raman scattering for background-free detection

    Praveen, B. B., Steuwe, C., Mazilu, M., Dholakia, K. & Mahajan, S., 21 May 2013, In : Analyst. 138, 10, p. 2816-2820 5 p.

    Research output: Contribution to journalArticle

  4. Windowing technique for determining the composition of organic samples by near-infrared reflectance

    Aucott, L. S., Buckland, S. T., Garthwaite, P. H., Nevison, I. M. & Murray, I., 1 Jan 1992, In : The Analyst. 117, 6, p. 947-952 6 p.

    Research output: Contribution to journalArticle

ID: 161193554

Top