SAW arrays using dendrimers and pattern recognition to detect volatile organics
- Sandia National Labs., Albuquerque, NM (United States)
- Texas A and M Univ., College Station, TX (United States). Dept. of Chemistry
- Michigan Molecular Inst., Midland, MI (United States)
- Dendritech, Inc., Midland, MI (United States)
chemical sensor arrays eliminate the need to develop a high-selectivity material for every analyte. The application of pattern recognition to the simultaneous responses of different microsensors enables the identification and quantification of multiple analytes with a small array. Maximum materials diversity is the surest means to create an effective array for many analytes, but using a single material family simplifies coating development. Here the authors report the successful combination of an array of six dendrimer films with mass-sensitive SAW (surface acoustic wave) sensors to correctly identify 18 organic analytes over wide concentration ranges, with 99.5% accuracy. The set of materials for the array is selected and the results evaluated using Sandia`s Visual-Empirical Region of Influence (VERI) pattern recognition (PR) technique. The authors evaluated eight dendrimer films and one self-assembled monolayer (SAM) as potential SAW array coatings. The 18 organic analytes they examined were: cyclohexane, n-hexane, i-octane, kerosene, benzene, toluene, chlorobenzene, carbon tetrachloride, trichloroethylene, methanol, n-propanol, pinacolyl alcohol, acetone, methyl isobutyl ketone, dimethylmethylphosphate, diisopropylmethylphosphonate, tributylphosphate, and water.
- Research Organization:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 674600
- Report Number(s):
- SAND-98-1679C; CONF-981108-; ON: DE98007222; BR: GC0401000; TRN: AHC29820%%52
- Resource Relation:
- Conference: 194. meeting of the Electrochemical Society, Boston, MA (United States), 1-6 Nov 1998; Other Information: PBD: [1998]
- Country of Publication:
- United States
- Language:
- English
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