Development of selective mass sensors for field monitoring of organic vapors
- Univ. of Nevada, Las Vegas, NV (United States). Harry Reid Center for Environmental Studies
- Univ. Nacional Autonoma de Mexico, Mexico City (Mexico)
There is increasing interest in the potential use of chemical sensors for field monitoring of hazardous waste and toxic chemicals. Advantages include low cost, small size, simplicity, and sensitivity. Mass sensors represent one class of devices that are being investigated for hazardous waste sites and other monitoring applications. An integral part of mass sensor technology is the recognition coating which provides selectivity. The present paper should allow practitioners an understanding of how mass sensors such as quartz crystal microbalances (QCMs) and surface acoustic wave (SAW) devices operate. A description is given on how one can use linear salvation energy relationships (LSER) to characterize performance of recognition coatings and to design coatings with improved sensitivity. Information is included on the preparation of sensor recognition coatings using plasma deposition. Such a coating deposited from ethylenediamine was tested for relative sensitivity to xylene, benzene, cyclohexane, n-butylamine, water and acetic acid vapors. The experimental performance of the coatings was consistent with what can be predicted from the published LSER values of the individual analyte vapors.
- OSTI ID:
- 230986
- Report Number(s):
- CONF-950209-; TRN: IM9623%%296
- Resource Relation:
- Conference: 4. international symposium on field screening methods for hazardous wastes and toxic chemicals, Las Vegas, NV (United States), 22-24 Feb 1995; Other Information: PBD: 1995; Related Information: Is Part Of Field screening methods for hazardous wastes and toxic chemicals. VIP-47, Volume 1; PB: 733 p.
- Country of Publication:
- United States
- Language:
- English
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