Optimization of composite polymer gas sensor arrays for single-analyte multiple-interferent applications

Denise M. Wilson

doi:10.1117/12.456959

22 February 2002 Optimization of composite polymer gas sensor arrays for single-analyte multiple-interferent applications

Denise M. Wilson

Author Affiliations +

Proceedings Volume 4576, Advanced Environmental Sensing Technology II; (2002) https://doi.org/10.1117/12.456959
Event: Environmental and Industrial Sensing, 2001, Boston, MA, United States

Abstract

Results for optimizing an array of composite polymer gas sensors for sensing one of five analytes in the presence of up to four interferents are presented. The optimized array consists of a heterogeneous array of up to ten points (unlike sensors) in multi-dimensional sensor space. The optimization techniques presented here are linear, since the composite polymer sensors in their useful (low concentration) operating range exhibit linear and additive response characteristics. The optimization of these arrays produces maximum separability between analytes, demonstrating the trade-off between the addition of both information and variability induced by increasing the size of the heterogeneous array. Optimization results for sensing acetone, hexane, thf, toluene, and ethanol in the presence of interferents result in array sizes that are significantly less than the maximum available number of sensors (10). This result adds fuel to the argument that fewer sensors are better; the argument for more sensors is also made in the context of the electronic nose systems where significant chemical diversity is required.

Citation Download Citation

Denise M. Wilson "Optimization of composite polymer gas sensor arrays for single-analyte multiple-interferent applications", Proc. SPIE 4576, Advanced Environmental Sensing Technology II, (22 February 2002); https://doi.org/10.1117/12.456959

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