PMID: 235668Mar 1, 1975

Determination of the ammonia content in the atmosphere of biosatellite mock-ups and approaches to its standardization

Kosmicheskaia biologiia i aviakosmicheskaia meditsina
G N PliskovskaiaV M Miliavskiĭ

Abstract

The concentrations of ammonia having an irritating and acute effect on intact rats and hypokinetic rats were determined. The thresholds of the chronic effect were calculated for each group of animals. The 30-day hypokinesia increased the animal sensitivity to ammonia: the threshold of the irritating effect decreased twice. The atmosphere in an enclosure equipped with an automatic life support system was examined during 30-day integrated animal experiments. Ammonia proved to be the major contaminant. Its concentration increased gradually, remaining for the longest part of the experiments (28 days) below the threshold of the chronic effect (40 mg/m3).

Related Concepts

Lung
Hypokinesia
Smell Perception
Blood Ammonia Measurement
Ammonia Inhalants
Life Support Systems, Regenerative
Hypokinesia, Experimental
Ammonia
Respiration
Ammonia Measurement

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