Techniques for active passivation
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United States of America Patent
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Dec 20, 2016
Grant Date -
Jun 16, 2016
app pub date -
Dec 15, 2014
filing date -
Dec 15, 2014
priority date (Note) -
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Abstract
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.
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