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Detection and classification characteristics of arrays of carbon black/organic polymer composite chemiresistive vapor detectors for the nerve agent simulants Dimethylmethylphosphonate and Diisopropylmethylphosponate

Hopkins, Alan R. and Lewis, Nathan S. (2002) Detection and classification characteristics of arrays of carbon black/organic polymer composite chemiresistive vapor detectors for the nerve agent simulants Dimethylmethylphosphonate and Diisopropylmethylphosponate. In: Chemical and Biological Sensing III. Proceedings of SPIE. No.4722. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, pp. 86-97. ISBN 0819444723. https://resolver.caltech.edu/CaltechAUTHORS:20180723-113318174

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Abstract

Arrays of conducting polymer composite vapor detectors have been evaluated for performance in the presence of the nerve agent simulants dimethylmethylphosphonate (DMMP) and diisopropylmethylphosponate (DIMP). Limits of detection for DMMP on unoptimized carbon black-organic polymer composite vapor detectors in laboratory air were estimated to be 0.047-0.24 mg m^(-3). These values are lower than the EC50 value for the nerve agents sarin (methylphosphonofluoridic acid, (1-methylethyl) ester) and soman, which have been established as equals 0.8 mg m^(-3). Arrays of these vapor detectors were easily able to resolve signatures due to exposures to DMMP from those due to DIMP or due to a variety of other test analytes in a laboratory air background. In addition, DMMP at 27 mg m^(-3) could be detected and differentiated from the signatures of the other test analytes in the presence of backgrounds of potential interferents in the background ambient, including water, methanol, benzene, toluene, diesel fuel, lighter fluid, vinegar and tetrahydrofuran, even when these interferents were present in much higher concentrations than that of the DMMP or DIMP being detected.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1117/12.472252DOIArticle
http://resolver.caltech.edu/CaltechAUTHORS:20160727-095127275Related ItemJournal Article
ORCID:
AuthorORCID
Lewis, Nathan S.0000-0001-5245-0538
Additional Information:© 2002 Society of Photo-Optical Instrumentation Engineers (SPIE). We acknowledge the Department of Energy (DE-FG03-98NV13367), and the Army Research Office through a MURI (DAAG55-98-1-0266) and DARPA (DAAK-60-97-K9503) for support of this work. We also acknowledge helpful discussions with V. George of the Army Night Vision Laboratory regarding detection limits and background ambients of interest.
Funders:
Funding AgencyGrant Number
Department of Energy (DOE)DE-FG03-98NV13367
Army Research Office (ARO)DAAG55-98-1-0266
Defense Advanced Research Projects Agency (DARPA)DAAK-60-97-K9503
Subject Keywords:Nerve agent simulants, vapor detectors, chemiresistors
Series Name:Proceedings of SPIE
Issue or Number:4722
DOI:10.1117/12.472252
Record Number:CaltechAUTHORS:20180723-113318174
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20180723-113318174
Official Citation:Alan R. Hopkins, Nathan Saul Lewis, "Detection and classification characteristics of arrays of carbon black/organic polymer composite chemiresistive vapor detectors for the nerve agent simulants Dimethylmethylphosphonate and Diisopropy", Proc. SPIE 4722, Chemical and Biological Sensing III, (24 June 2002); doi: 10.1117/12.472252; https://doi.org/10.1117/12.472252
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:88130
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:23 Jul 2018 19:41
Last Modified:16 Nov 2021 00:24

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