volatile organic compounds

This study explores the relationships of evaporation dynamics, metal oxide semiconductor (MOS) sensor analysis, sensory panel perception of essential oils, and molecular docking interactions of D-limonene, eugenol, citronellol, isoamyl acetate, and cis-3-hexen-1-ol. The VOCs showed strong correlations (Pearson r=0.96–0.98) between evaporation rate and odor intensity for D-limonene, isoamyl acetate, and cis-3-hexen-1-ol, whereas eugenol exhibited low correlations. Real-time MOS data validated these evaporation profiles.

In this study, we developed a needle trap device packed with HKUST-1 (Cu-based metal-organic framework) for the sampling and analysis of benzene, toluene, ethylbenzene, and xylene (BTEX) in ambient air for the first time. The HKUST-1 was synthesized via the electrochemical process. Afterwards, the adsorbent was packed into 22 gauge needles. To provide the different concentrations of BTEX, the syringe pump was connected to the glass chamber to inject a specific rate of the BTEX compounds.