| Title: | Review of Gravimetric Sensing of Volatile Organic Compounds |
| Author(s): | McGinn CK; Lamport ZA; Kymissis I; |
| Address: | "Department of Electrical Engineering, Columbia University, New York, New York 10027-6902, United States" |
| DOI: | 10.1021/acssensors.0c00333 |
| ISSN/ISBN: | 2379-3694 (Electronic) 2379-3694 (Linking) |
| Abstract: | "Volatile organic compounds (VOCs) are pervasive in the environment. Since the early 1980s, substantial work has examined the detection of these materials, as they can indicate environmental changes that can affect human health. VOCs and similar compounds present a very specific sensing problem in that they are not reactive and often nonpolar, so it is difficult to find materials that selectively bind or adsorb them. A number of techniques are applied to vapor sensing. High resolution molecular separation approaches such as gas chromatography and mass spectrometry are well-characterized and offer high sensitivity, but are difficult to implement in portable, real-time monitors, whereas approaches such as chemiresistors are promising, but still in development. Gravimetric approaches, in which the mass of an adsorbed vapor is directly measured, have several potential advantages over other techniques but have so far lagged behind other approaches in performance and market penetration. This review aims to offer a comprehensive background on gravimetric sensing including underlying resonators and sensitizers, as well as a picture of applications and commercialization in the field" |
| Keywords: | "Gases Humans *Volatile Organic Compounds electronic nose gravimetric sensing polymers, self-assembled monolayer quartz crystal monitor surface acoustic wave resonator (SAW) thin film bulk acoustic resonator (FBAR) threat detection volatile organic compoun;" |
| Notes: | "MedlineMcGinn, Christine K Lamport, Zachary A Kymissis, Ioannis eng Research Support, U.S. Gov't, Non-P.H.S. Review 2020/05/16 ACS Sens. 2020 Jun 26; 5(6):1514-1534. doi: 10.1021/acssensors.0c00333. Epub 2020 May 29" |
