Transfer line for sampling probe

摘要

Methods of sampling substances such as subsurface contaminants are described, as well as a transfer line for use in a system for the sampling of substances such as subsurface contaminants. A sampling system and methods of manufacture and use of the system are also described. The transfer line described for use in a probe system for subsurface chemical sampling, is for connecting an detection apparatus with a probe, the transfer line comprising:
a first flexible tube for carrying fluid to the probe; and
a second flexible tube for carrying sample-loaded fluid from the probe;
wherein second flexible or both first and second flexible tubes comprise a barrier tube surrounded by a metal coating and the metal coating is surrounded by an insulating layer, so that one or both of the flexible tubes can be heated by applying a voltage on the metal coating.