Formaldehyde gas sensors based on a quartz crystal microbalance modified with aniline-doped polyvinyl acetate nanofibers
Sintia Ainus Sofa, Roto Roto, Rizky Aflaha, Taufik Abdillah Natsir, Nur Aisyah Humairah, Ahmad Kusumaatmaja, Kuwat Trıyana, Ruchi Gupta
Abstract
with a response and recovery times of 200 s and 90 s, respectively. It gave limits of detection (LOD) and limit of quantification (LOQ) of 28 ppm and 96 ppm, respectively. Moreover, the modified QCM was selective towards formaldehyde compared to the other gases. The current workplace exposure limit (WEL) for formaldehyde is 2 ppm, with a time-weighted average over eight hours. Future work will focus on improving the reported QCM sensor to meet the required LOD for formaldehyde detection in the environment and industrial sites.
Topics & Concepts
Quartz crystal microbalancePolyvinyl acetateNanofiberAnilineMaterials sciencePolyvinyl alcoholFormaldehydeDopingChemical engineeringQuartzChemistryPolymerNanotechnologyOrganic chemistryComposite materialAdsorptionOptoelectronicsEngineeringAdvanced Chemical Sensor TechnologiesGas Sensing Nanomaterials and SensorsPolydiacetylene-based materials and applications