Skip to Content
Find More Like This
Return to Search

Techniques for active passivation

United States Patent

9,523,666
December 20, 2016
View the Complete Patent at the US Patent & Trademark Office
In one embodiment, active (continuous or intermittent) passivation may be employed to prevent interaction of sticky molecules with interfaces inside of an instrument (e.g., an infrared absorption spectrometer) and thereby improve response time. A passivation species may be continuously or intermittently applied to an inlet of the instrument while a sample gas stream is being applied. The passivation species may have a highly polar functional group that strongly binds to either water or polar groups of the interfaces, and once bound presents a non-polar group to the gas phase in order to prevent further binding of polar molecules. The instrument may be actively used to detect the sticky molecules while the passivation species is being applied.
Roscioli; Joseph R. (Chelmsford, MA), Herndon; Scott C. (Littleton, MA), Nelson, Jr.; David D. (N. Chelmsford, MA)
Aerodyne Research, Inc. (Billerica, MA)
14/ 570,401
December 15, 2014
STATEMENT REGARDING FEDERALLY SUPPORTED RESEARCH This invention was made with Government support under DE-SC0006193 awarded by the Department of Energy. The Government has certain rights in this invention.