Process and apparatus for obtaining samples of liquid and gas from soil
Patent
·
OSTI ID:335462
An apparatus and process for obtaining samples of liquid and gas from subsurface soil is provided having filter zone adjacent an external expander ring. The expander ring creates a void within the soil substrate which encourages the accumulation of soil-borne fluids. The fluids migrate along a pressure gradient through a plurality of filters before entering a first chamber. A one-way valve regulates the flow of fluid into a second chamber in further communication with a collection tube through which samples are collected at the surface. A second one-way valve having a reverse flow provides additional communication between the chambers for the pressurized cleaning and back-flushing of the apparatus. 8 figs.
- Research Organization:
- De Gruyter Open
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- Assignee:
- SRS; SN: 99002077308; PA: EDB-99:047190; SCA: 540220
- Patent Number(s):
- US 5,889,217/A/
- Application Number:
- PAN: 8-650,473
- OSTI ID:
- 335462
- Country of Publication:
- United States
- Language:
- English
A probe method for soil water sampling and subsurface measurements
|
journal | December 1981 |
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