Environment monitoring test piece and test method

Details Environment monitoring test piece and test method Environment monitoring test piece and test method

1995-05-01

1998-05-12

Alexander, Lyle A.

Chemistry: analytical and immunological testing

Nitrogen containing

Oxides of nitrogen

436111, 436119, 422 53, G01N 1704

Patent

active

057504067

ABSTRACT:
There is provided a test piece by which NO.sub.x, present in an environment may be visually observed apart from the influence of other gases, and with which qualitative and quantitative analysis may be performed. The test piece has a layered structure prepared by vacuum deposition a metal thin-film (Ag, Pt, Au, etc.) on a metal substrate (Cu, Zn, etc.). The rough amounts of NO.sub.x, SO.sub.x and NH.sub.3 in the environment are determined on the basis of the corrosion products (nitrates, etc.) produced when NO.sub.x, SO.sub.x and NH.sub.3 are collected after the test piece has been exposed to the environment for a prescribed period of time.

REFERENCES:
patent: 3164004 (1965-01-01), King
patent: 3329004 (1967-07-01), King, Jr.
patent: 4099922 (1978-07-01), Yasuda et al.
patent: 4235098 (1980-11-01), Tisch
patent: 4508624 (1985-04-01), Nagata
patent: 4759210 (1988-07-01), Wohltjen
patent: 4869874 (1989-09-01), Falat
patent: 5208162 (1993-05-01), Osborne et al.
Patent Abstracts of Japan, vol. 13, No. 138 (P-852) Apr. 6, 1989 & JP-A-63 305232 (Fujitsu Ltd) Dec. 13, 1988.

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