Valentina Vassilenko

Nov 19, 2023 | mdpi.com | Pedro Moura |Paulo António Ribeiro |Maria Raposo |Valentina Vassilenko

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Nov 11, 2023 | mdpi.com | Valentina Vassilenko |Pedro Moura |Maria Raposo |Pedro Catalão

All articles published by MDPI are made immediately available worldwide under an open access license. No specialpermission is required to reuse all or part of the article published by MDPI, including figures and tables. Forarticles published under an open access Creative Common CC BY license, any part of the article may be reused withoutpermission provided that the original article is clearly cited. For more information, please refer tohttps://www.mdpi.com/openaccess.

Aug 2, 2023 | mdpi.com | Pedro Moura |Valentina Vassilenko |Pedro Catalão |Paulo Henrique Costa

Abstract:The employment of advanced analytical techniques and instrumentation enables the tracing of volatile organic compounds (VOCs) in vestigial concentrations (ppbv-pptv range) for several emerging applications, such as the research of disease biomarkers in exhaled air, the detection of metabolites in several biological processes, and the detection of pollutants for air quality control.

Jul 26, 2023 | mdpi.com | Pedro Moura |Carlos Fujão |Valentina Vassilenko |Fausto Santos

3.3. VOCs QuantificationThe third value of the GC-IMS spectra, the intensity, was used for plotting intensity profiles for each location. The intensities of each compound’s monomer, dimer, and trimer were summed, and its average intensity was calculated for all 10 replicates. This procedure was repeated for all 26 detected analytes. Subsequently, the intensity levels of each location were normalized against the outdoor air intensity levels.