The sampling system includes a transfer tube and a sampling head configured to volatilize a sample from a test surface. The transfer tube has an inlet end for receiving a volatized sample into an interior of the transfer tube and an outlet end for directing the volatized sample from the interior of the transfer tube. The sampling head is coupled to the inlet end of the transfer tube and has a volatilized sample receiving area defined by a distal end that is configured to be brought into contact with the test surface and an opening in the sampling head that is in fluid communication with the inlet end of the transfer tube. The distal end of the sampling head includes a porous metallic membrane.
ACKNOWLEDGMENT OF GOVERNMENT SUPPORT
 This invention was made with government support under Contract No. DE-AC05-000R22725 awarded by the U.S. Department of Energy. The government has certain rights in the invention.