7 March 2006 Determination of the water content in petroleum products using terahertz transmission spectroscopy
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Abstract
The water content in polyglycol oils is investigated by Terahertz Time-Domain Spectroscopy (THz-TDS). These oils are able to dissolve a certain percentage of water. Changes in the absorption coefficient and refractive index are observed related to the amount of water added to the pure oils. Comparison of the experimental data with predictions based on Beer-Lambert and Lorentz-Lorenz-theory, respectively, exhibits an excellent agreement. Analyses with Fourier Transform Infrared (FTIR) Spectroscopy reveal sensitivity similar to the THz-TDS experiment. THz-TDS may offer powerful tools to quantitatively determine the water concentration in petroleum products.
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Stefan Gorenflo, Stefan Gorenflo, Ulrike Tauer, Ulrike Tauer, Iliyana Hinkov, Iliyana Hinkov, Armin Lambrecht, Armin Lambrecht, Hanspeter Helm, Hanspeter Helm, } "Determination of the water content in petroleum products using terahertz transmission spectroscopy", Proc. SPIE 6120, Terahertz and Gigahertz Electronics and Photonics V, 61200L (7 March 2006); doi: 10.1117/12.644495; https://doi.org/10.1117/12.644495
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