CO 2 laser infrared optothermal spectroscopy for quantitative adulteration studies in binary mixtures of extra‐virgin olive oil

Optothermal window spectroscopy at CO 2 laser infrared wavelengths was used to detect the extent of adulteration of extra‐virgin olive oil by sunflower and safflower oils. A good linearity between the strength of optothermal signal and the concentration of each adulterating compound was found. Predi...

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Published in:Journal of the American Oil Chemists' Society 1998-03, Vol.75 (3), p.359-362
Main Authors: Favier, Jan Paul, Bicanic, Dane, Cozijnsen, Jan, van Veldhuizen, Beb, Helander, Per
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Language:English
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cited_by cdi_FETCH-LOGICAL-c904-33d688ed94ad5001df6716e557e48c7a1ac63f1ad6da111547f49ac991ef986f3
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container_issue 3
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creator Favier, Jan Paul
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description Optothermal window spectroscopy at CO 2 laser infrared wavelengths was used to detect the extent of adulteration of extra‐virgin olive oil by sunflower and safflower oils. A good linearity between the strength of optothermal signal and the concentration of each adulterating compound was found. Predicted limits of detection presently attainable by this new method are 6 (w/w) and 4.5% (w/w) for extra‐virgin olive oil adulterated with safflower oil and sunflower oil, respectively, and were confirmed experimentally; the corresponding relative errors were 0.3 and 0.18%. Interference effects are comparable to those encountered in other spectroscopic methods at the same wavelength.
doi_str_mv 10.1007/s11746-998-0053-4
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title CO 2 laser infrared optothermal spectroscopy for quantitative adulteration studies in binary mixtures of extra‐virgin olive oil
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