The present invention is directed to a method and device to generate a chemical signature
for a mixture of analytes. The present invention involves using a SPME surface to one or …

The present invention is directed to a method and device to desorb an analyte using heat to
allow desorption of the analyte molecules, where the desorbed analyte molecules are …

In various embodiments of the invention, a cargo container can be monitored at appropriate
time intervals to determine that no controlled substances have been shipped with the cargo …

In various embodiments of the invention, a sorbent coated mesh or grid introduced into
contact with a sample can be monitored at appropriate temperatures, positions and time …

The present invention is directed to a method and device to generate a chemical signature
for a mixture of analytes. The present invention involves using a SPME surface to one or …

The present invention is directed to a method and device to desorb an analyte using heat to
allow desorption of the analyte molecules, where the desorbed analyte molecules are …

In an embodiment of the present ambient ionization experiment, the abundance of
background chemicals relative to ions of interest is decreased by pulsing the carrier gas …

Methods and devices for pretreatment of a conducting sampling substrate which enable an
electrostatic charge to be used to transfer analyte molecules onto a sampling substrate …

The present invention is directed to a method and device to desorb an analyte using heat to
allow desorption of the analyte molecules, where the desorbed analyte molecules are …

The present invention is directed to a method and device to generate a chemical signature
for a mixture of analytes. The present invention involves using a SPME surface to one or …