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Fatty acids detection represents one of the key parameters in assessing the characteristics nutraceutical products. Variations in the concentration of specific molecules, such as volatile organic compounds (VOCs), play a crucial role in identifying the authenticity of the oil and determining its potential health benefits. This study focuses on the development of a photoionization detector (PID) with improved selectivity characteristics for the analysis of vegetable oils. The detector exploits a dual chamber of analysis that includes thin layers of zeolite 13X and 5A for selective adsorption and subsequently thermal desorption at 100 °C. PID-zeolite sensor was validated on a real tomato seeds oil (TSO) evidencing the selective detection of palmitic acid.

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Zeolite-Based VOC Sensor for Vegetable Oil Analysis

  • 会议论文

  • 发表日期：

    2026年

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  • Giuseppe Oliva,
  • Laura Manin,
  • Srećko Valić,
  • Syed Kamrul Islam,
  • Antonino S. Fiorillo,
  • FIlippo Laganà,
  • Salvatore Andrea Pullano

摘要

Fatty acids detection represents one of the key parameters in assessing the characteristics nutraceutical products. Variations in the concentration of specific molecules, such as volatile organic compounds (VOCs), play a crucial role in identifying the authenticity of the oil and determining its potential health benefits. This study focuses on the development of a photoionization detector (PID) with improved selectivity characteristics for the analysis of vegetable oils. The detector exploits a dual chamber of analysis that includes thin layers of zeolite 13X and 5A for selective adsorption and subsequently thermal desorption at 100 °C. PID-zeolite sensor was validated on a real tomato seeds oil (TSO) evidencing the selective detection of palmitic acid.