Semipermeable membrane-based sampling systems
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United States of America Patent
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Dec 27, 2005
Grant Date -
May 13, 2004
app pub date -
Oct 31, 2003
filing date -
Oct 31, 2002
priority date (Note) -
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Abstract
The device and methods relate to a sampling device for obtaining samples of analytes in a difficult-to-reach sampling location, such as below ground or underwater, and transporting the sample to an accessible delivery or collection site. The sampling device comprises a semipermeable membrane-based sampling chamber, which can be positioned under the ground or water surface where analytes of interest can permeate into the chamber through the semipermeable membrane. Transfer channels, which communicate with the sampling chamber, is used to transport the sample to the surface for analysis without removing the chamber from the sampling location.
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