Method of and apparatus for monitoring radioactivity concentrati

Details Method of and apparatus for monitoring radioactivity concentrati Method of and apparatus for monitoring radioactivity concentrati

1980-07-30

1981-12-08

Anderson, Bruce C.

Radiant energy

Methods including separation or nonradiant treatment of test...

250428, G01N 3100, G01N 3300

Patent

active

043049940

ABSTRACT:
A radioactivity monitoring system capable of exactly detecting the concentration of .sup.131 I in a gas even in a low concentration is disclosed in which a sample gas is passed through a filter cartridge filled with an iodine absorbing material to accumulate iodine, radiation is counted on both entrance and exit sides of the filter cartridge, the absorption distribution of iodine absorbed in the filter cartridge is estimated from the ratio between respective counts obtained on the entrance and exit sides, and one of the counts is corrected by the estimated absorption distribution of iodine to calculate the radioactivity concentration of .sup.131 I in the gas.

REFERENCES:
patent: 3590247 (1971-06-01), Holford
patent: 3838554 (1974-10-01), Wilhelm et al.
patent: 3864574 (1975-02-01), Wilhelm
patent: 3982129 (1976-09-01), Lattin et al.
patent: 4071761 (1978-01-01), Horrocks
patent: 4107533 (1978-08-01), Tabuchi et al.
"Continuous Monitoring of Radioactive Iodine Emissions", Wilhelm et al., 13th AEC Air Cleaning Conference, 1974.

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