Gas-Phase Raman Spectroscopy—A New Tool in the Process Analysis Toolbox

Vuuren, Peter van; Lewis, Ian R.; Slater, Joseph B.; Tedesco, James M.; Fairchild, Ronald C.; Human, Phillip; Champion, P. M.; Ziegler, L. D.

doi:10.1063/1.3482442

Cited by 1 publication

(1 citation statement)

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“…Their applications as gas sensors for environmental monitoring are still limited mainly due to the complexity and size of the system as well as relatively high cost. The spectroscopic analysis of gases is often performed by using Raman spectroscopy [12,13], near-infrared (NIR) spectroscopy [14] or Fourier transform infrared spectroscopy (FTIR) [15]. Recently, novel spectroscopic techniques based on submillimetre (sub-mm) or terahertz (THz) radiation were used as an environmental monitoring system and gas detection and/or identification analytical tool.…”

Section: Introductionmentioning

confidence: 99%

Analytical Gas Sensing in the Terahertz Spectral Range

Abina,

Puc,

Jazbinšek

et al. 2023

Micromachines

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Exploiting the terahertz (THz) part of the electromagnetic spectrum is attracting attention in various scientific and applied disciplines worldwide. THz technology has also revealed its potential as an effective tool for gas analysis in astronomy, biomedicine and chemical analysis. Recently, it has also become important in environmental applications for monitoring hazardous and toxic gases in the atmosphere. This paper gives an overview of THz gas detection analytical methods for environmental and biomedical applications, starting with a brief introduction to THz technology and an explanation of the interaction of THz radiation with gaseous species and the atmosphere. The review focuses on several gaseous species and groups of air pollutants that have been or can be analysed by THz spectrometry. The review concludes that different but complementary THz detection methods allow unique detection, identification and quantification of gaseous and particulate air pollutants with high selectivity, specificity and sensitivity. THz detection methods also allow further technological improvements and open new application possibilities.

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Section: Introductionmentioning

confidence: 99%