Test tube construction and method for measuring for nickel aeros

Details Test tube construction and method for measuring for nickel aeros Test tube construction and method for measuring for nickel aeros

1980-09-30

1982-05-18

Turk, Arnold

Chemistry: physical processes

Physical processes

Crystallization

422 60, 422 61, 422 86, G01N 2178, G01N 3122

Patent

active

043302971

ABSTRACT:
A testing device for measuring for nickel-aerosols includes a glass tube having breakable end tips for opening the tube for the passage of a test gas therethrough and a filling in the tube which includes a closed ampoule of hydrochloric acid, a filter layer for entrapping nickel particles of the gas being tested, a reaction layer of a material impregnated with a color reagent for nickel, a granular buffer layer and a second breakable ampoule of ammonia water arranged in the direction of flow of the test gas through the tube. The testing is carried out by breaking the first ampoule to release hydrochloric acid which flows through the filter and reacts with the nickel particles which pass to the reagent layer, subsequently breaking the second ampoule so that its contents will be directed into the granular buffer layer and in the reagent layer. The ammonia water in the second ampoule is directed into the buffer layer and then into the reagent layer to produce a color reaction in the reagent layer and the intensity of the discoloration produced is proportional to the amount of nickel filtered out of the test gas. This color is compared with a standard showing the color of reaction for various concentrations of nickel.

REFERENCES:
patent: 2908555 (1959-10-01), Grosskopf
patent: 3022141 (1962-02-01), Grosskopf
patent: 3985017 (1976-10-01), Goldsmith
patent: 4271125 (1981-06-01), Leichnitz
patent: 4272479 (1981-06-01), Huneke et al.
The Merck Index of Chemicals and Drugs--Seventh Edition, Merck and Co., N.J., 1960, pp. 132, 371 and 721.

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