Apparatus for time-averaged or composite sampling of chemicals i

Details Apparatus for time-averaged or composite sampling of chemicals i Apparatus for time-averaged or composite sampling of chemicals i

1987-01-20

1988-01-05

Fisher, Richard V.

Liquid purification or separation

Structural installation

Geographic

2101982, 210541, 166147, 166163, 166168, 166187, 166264, 73151, E21B 4700, E21B 33127, E21B 2306, B01D 1712

Patent

active

047174730

ABSTRACT:
The ground-water sampler collects a time-averaged or composite sample of the ground water. The sampling system was designed to be self-contained and all sources of power being contained within the well casing. The sampler collects the sample on a sorptive media and the media analyzed by a laboratory. The sampling system prevents the exchange of gases between the ground water and the atmosphere. The exchange is prevented by a well packer which is designed to be placed in well casings of 2 inches or greater. The well packer can be easily and economically placed into the well casing with the use of a packer tool. The sampler is inserted into the well packer and once inserted a one-way check valve opens to the aquifer allowing the water to be sampled. After the sampling episode, the sampler is removed from the well packer and the one-way check valve closes. The media is then analyzed in a laboratory. In the alternative, the sorptive media unit can be replaced with chemical or physical analysis units making possible real-time analysis of the aquifer.

REFERENCES:
patent: 3529665 (1970-09-01), Malone
patent: 4013124 (1977-03-01), Hutchinson et al.
patent: 4438654 (1984-03-01), Torstensson
patent: 4448692 (1984-05-01), Nakamoto et al.
patent: 4483187 (1984-11-01), Maddock, Jr.
patent: 4635717 (1987-01-01), Jageler

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