Sensors & Electronics
Chemical Sensors
IMS Optimization for Ethers in Water (235)
Problem: Need a robust, sensitive, portable, field deployable sensor system to detect aliphatic ether compounds in water.
Project Activity Scope (from Technical Overview Chart): Mechanisms through Integrated Systems
PNNL Staff Solution:
- COTS IMS sensors have problems handling water matrices directly, and can have complex spectra from background interfering chemicals
- But an optimized IMS could fully meet the demanding rrequirements
1. Used membrane inlet to monitor water sample stream directly without extraction or sample prep
3. Acetone dopant used to remove interfering signals from unwanted background components such as hydrocarbons (gasoline)
(Stages 2 & 4 needed no adaptation)
Capabilities Employed to Meet Client Needs: Ion mobility spectrometry; gas phase ion chemistry; ionization source design; data acquisition software development; sampling methodologies; data analysis algorithms; analog and digital electronics, including high voltage implementation; mechanical component and packaging design; system integration; field testing and demonstration; field deployment and customer user training; develop operations and service manuals.
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Contact: David Atkinson
