Verification of the impedance spectroscopy method used in extra virgin olive oil water content assessment
[ 1 ] Instytut Technologii i Inżynierii Chemicznej, Wydział Technologii Chemicznej, Politechnika Poznańska | [ P ] pracownik
2020
rozdział w monografii naukowej / referat
angielski
EN Authors have used impedance spectroscopy to assess water content in diesel fuel successfully. The lack of similar research to compare obtained results induced authors to verify the same methodology with a substance that would be free of some aspects that make diesel analysis very complicated but with similar electrical properties. Impedance of samples containing 500 ml of extra virgin olive oil (EVOO) with known water contents were examined in the frequency range of 0.02–500 Hz at a constant temperature. Obtained results were used to fit equivalent circuit elements values. Similarly to diesel, water added to EVOO caused major change in the equivalent resistance. The tests’ findings presented in the chapter show that basing either on the measured impedance modulus or calculated resistance one can assess the water content in EVOO with the use of impedance spectroscopy, therefore it confirms that the methodology proposed by authors was also proper to be used with diesel fuel.
09.05.2020
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