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Title: Sampling and Sensing Systems for High Priority Analytes

Abstract

This reports summarizes the results from a Laboratory Directed Research and Development effort to develop selective coastings for detecting high priority analytes (HPAs), such as chemical warfare (CW) agents and their precursors, in the presence of common interferents. Accomplishments during this project included synthesis and testing of new derivatized sol-gel coatings for surface acoustic wave sensors (SAWs). Surfactant modified and fluoroalcohol derivatized sol-gel oxides were coated onto SAW devices and tested with volatile organic compounds (VOCs). Theses modified sol-gel coatings improved SAW sensitivity to DMMP by over three orders of magnitude when compared to standard polymeric oatings such as polyisobutylene and by over two orders of magnitude compared with polymers tailor made for enhanced sensitivity to phosphonates. SAW sensors coated with these materials exhibit highly sensitive reversible behavior at elevated temperatures (>90 degree C), possibly leading to low detection levels for semivolatile analytes while remaining insensitive to volatile organic interferants. Additionally, we have investigated the use of reactive polymers for detection of volatile and reactive CW agent precursors (Chemical Weapons Convention Schedule 3 Agents) such as phosphouous oxychloride (POCl(3)). The results obtained in this study find that sensitive and selective responses can be obtained for Schedule 3 agents using commerciallymore » available polymers and chemical guidelines from solution phase chemistry.« less

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA
Sponsoring Org.:
USDOE
OSTI Identifier:
6992
Report Number(s):
SAND99-0925
ON: DE00006992
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
40 CHEMISTRY; 44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; 45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE; Chemical Warfare Agents; Sol-Gel Process; Sampling; Chemical Analysis; Polymers; Films; Surfaces; Acoustic Measurements; Sound Waves; Coatings

Citation Formats

Brinker, C.Jeffrey, Frye-Mason, Gregory C., Kottenstette, Richard J., Lewis, Patrick R., Sasaki, Darryl Y., and Sellinger, Alan. Sampling and Sensing Systems for High Priority Analytes. United States: N. p., 1999. Web. doi:10.2172/6992.
Brinker, C.Jeffrey, Frye-Mason, Gregory C., Kottenstette, Richard J., Lewis, Patrick R., Sasaki, Darryl Y., & Sellinger, Alan. Sampling and Sensing Systems for High Priority Analytes. United States. doi:10.2172/6992.
Brinker, C.Jeffrey, Frye-Mason, Gregory C., Kottenstette, Richard J., Lewis, Patrick R., Sasaki, Darryl Y., and Sellinger, Alan. Thu . "Sampling and Sensing Systems for High Priority Analytes". United States. doi:10.2172/6992. https://www.osti.gov/servlets/purl/6992.
@article{osti_6992,
title = {Sampling and Sensing Systems for High Priority Analytes},
author = {Brinker, C.Jeffrey and Frye-Mason, Gregory C. and Kottenstette, Richard J. and Lewis, Patrick R. and Sasaki, Darryl Y. and Sellinger, Alan},
abstractNote = {This reports summarizes the results from a Laboratory Directed Research and Development effort to develop selective coastings for detecting high priority analytes (HPAs), such as chemical warfare (CW) agents and their precursors, in the presence of common interferents. Accomplishments during this project included synthesis and testing of new derivatized sol-gel coatings for surface acoustic wave sensors (SAWs). Surfactant modified and fluoroalcohol derivatized sol-gel oxides were coated onto SAW devices and tested with volatile organic compounds (VOCs). Theses modified sol-gel coatings improved SAW sensitivity to DMMP by over three orders of magnitude when compared to standard polymeric oatings such as polyisobutylene and by over two orders of magnitude compared with polymers tailor made for enhanced sensitivity to phosphonates. SAW sensors coated with these materials exhibit highly sensitive reversible behavior at elevated temperatures (>90 degree C), possibly leading to low detection levels for semivolatile analytes while remaining insensitive to volatile organic interferants. Additionally, we have investigated the use of reactive polymers for detection of volatile and reactive CW agent precursors (Chemical Weapons Convention Schedule 3 Agents) such as phosphouous oxychloride (POCl(3)). The results obtained in this study find that sensitive and selective responses can be obtained for Schedule 3 agents using commercially available polymers and chemical guidelines from solution phase chemistry.},
doi = {10.2172/6992},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {4}
}

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