Method for determining water vapor transmission rate or water co

Details Method for determining water vapor transmission rate or water co Method for determining water vapor transmission rate or water co

1973-05-09

1977-09-27

Tung, T.

Chemistry: electrical and wave energy

Processes and products

204195W, 250282, 73 2976, 733365, G01N 2746

Patent

active

040509958

ABSTRACT:
A cell for absorbing and electrolyzing the water vapor transmitted from a sample used in an apparatus for rapidly determining the water vapor transmission rate through plastic films or like structures and water content in solid, liquid and gaseous materials wherein electrolysis of the water vapor from a test sample takes place in a cell electrolysis assembly comprising a first electrode support and a first electrode and a second electrode support and a second electrode with a formaminous matrix having an electrically conductive water absorption material therein disposed electrically between the first and second electrodes. The water vapor transmission rate or water content of the sample can be rapidly and accurately determined by quantitative mass spectrometer calculations of the oxygen and hydrogen generated during electrolysis or by calculation of the electrical current needed to electrolyze the water vapor which are related with primary accuracy.

REFERENCES:
patent: 3072556 (1963-01-01), Czuha
patent: 3188283 (1965-06-01), Cole
patent: 3367850 (1968-02-01), Johnson
patent: 3546449 (1970-12-01), Aspinal
patent: 3661724 (1972-05-01), Strickler
patent: 3712860 (1973-01-01), Gabrusenok
Keidel, "Anal. Chem.", vol. 31, No. 12, Dec. 1959, pp. 2043-2048.

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