Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing liquid or solid sample
Patent
1980-10-24
1984-08-07
Smith, Alfred E.
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Means for analyzing liquid or solid sample
250303, 250432R, 422 68, 436 39, 436 57, G01N 3100
Patent
active
044643381
ABSTRACT:
An apparatus for measuring the in situ levels of tritium in ground water at depth in the earth. A tritium analyzer is made to fit in a sonde or probe which is placed in a borehole. This analyzer can perform a programmed cycle and has a sample intake to allow ambient water to enter; a reaction chamber; a drying chamber; an ion chamber; a cryogenic gas pump, and a spent capsule collection chamber. After the water sample is brought into the unit, it rises into the reaction chamber where it reacts with a preweighed quantity of calcium carbide in a capsule to yield acetylene. Next the acetylene vapor passes through the drying chamber to remove excess water and then flows into the evacuated ion chamber. Following this, the ion chamber is sealed off and a count of tritium beta decay events is started. Following the completion of the count, a valve is opened to remove the acetylene from the ion chamber with the cryogenic gas pump. The spent capsule containing the residue from the reaction is ejected into a collection chamber. Last, the holder for the preweighed calcium carbide capsule is refilled from a stock of such capsules in preparation for a new measurement cycle.
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patent: 3655982 (1972-04-01), Gelezunas
patent: 4267446 (1981-05-01), Brown et al.
patent: 4294798 (1981-10-01), Capuano et al.
"Tritium Tracing--A Rediscovery", Nucleonics, May 1958, pp. 62-67.
Tamers, "Benzene Method Tritium in Rain Without Isotope Enrichment", Nucleonics, Jun. 1963, pp. 90-94.
Jalbert, "A Monitor for Tritium in Air Containing Other Beta Emitters", Proc. 23rd Conf. Remote Sys. Tech., San Francisco, Nov. 17-20, 1975, pp. 89-93.
Dotson Danny W.
Mikesell Jon L.
Senftle Frank E.
Fields Carolyn E.
Smith Alfred E.
The United States of America as represented by the Secretary of
Zack Thomas
LandOfFree
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