H2O2 NMR Sensor – Nuclear Magnetic Resonance Method for Detecting Hydrogen Peroxide

The detection of explosives or of chemical precursors of
explosives is gaining considerable importance due an
increasing threat of terrorist attacks. It is particularly
important at airports for the inspection of passenger
luggage and in the freight business for the inspection of
parcels. Several techniques, of which many are based on
X-rays and some are based on nuclear quadrupole
resonance have been tested and implemented in the past.
However, in particular X-ray scans of checked and hand
luggage does not usually give sufficient evidence whether
or not a liquid detected is harmless such as water, milk
and the like or dangerous as an explosive or as a
precursor of an explosive like hydrogen peroxide.
In the past, different nuclear magnetic resonance (NMR)
techniques have tested. NMR spectroscopy is attractive in
particular, as it allows a clear discrimination of the
sample’s chemistry while the signature of NMR relaxation
appeared to be less significant. Until now these
techniques have not been implemented as the time
necessary to perform such measurements was perceived
to be is too long and the operative efforts for obtaining the
required resolution to be too high.

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