Process and apparatus for obtaining samples of liquid and gas from soil
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; SCA: 540220; PA: EDB-99:047190; SN: 99002077308
- Patent Number(s):
- US 5,889,217/A/
- Application Number:
- PAN: 8-650,473
- OSTI ID:
- 335462
- Resource Relation:
- Other Information: PBD: 30 Mar 1999
- Country of Publication:
- United States
- Language:
- English
A probe method for soil water sampling and subsurface measurements
|
journal | December 1981 |
Similar Records
Multiple sample annulus pressure responsive sampler
Fluid sampling apparatus