Soil solution sampler

Details Soil solution sampler Soil solution sampler

1989-12-29

1991-07-30

Noland, Tom

Measuring and testing

Sampler, sample handling, etc.

With constituent separation

7386435, 7386473, 175 59, G01N 114, E21B 4908

Patent

active

050351494

ABSTRACT:
A soil solution sampler is constructed of stainless steel by joining a porous stainless steel tube to a non-porous stainless steel tube to form a soil solution receptacle. Air and sample transfer conduits extend from the earth's surface into the receptacle. By drawing a vacuum on the air conduit, soil solution is drawn through the porous wall into the buried sampler. After collection, the sample is transferred to the surface through the sample transfer conduit by applying positive air pressure to the air conduit. In one embodiment, a divider wall having a port and one-way check valve separates the receptacle into an upper soil solution entry chamber having a porous wall, and a lower collection chamber into which the air and sample transfer conduits extend.

REFERENCES:
patent: 2004194 (1935-06-01), Lacy-Mulhall
patent: 2214551 (1940-09-01), Edwards
patent: 2386832 (1945-10-01), Zaikowsky et al.
patent: 3084553 (1963-04-01), Lullinon et al.
patent: 3188563 (1965-06-01), Jameson
patent: 3198265 (1965-08-01), Voelkerding
patent: 3521715 (1970-07-01), Kratein
patent: 4047437 (1977-09-01), Brooks
patent: 4501161 (1985-02-01), Endo et al.
patent: 4745801 (1988-05-01), Luzier
patent: 4759227 (1988-07-01), Timmons
"A Probe Method for Soil Water Sampling and Subsurface Measurements"; Water Resources Research ; vol. 17, NO. 6, pp. 1731-1736; Dec. 1981; W. D. Harrison et al.
"A Stainless Steel Soil Solution Sampler for Monitoring Pesticides in the Vadose Zone"; Soil Sci. Soc. Am. J., vol. 50, pp. 263-265, pub. 1987; by C. N. Smith et al.

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