Pliskovskaia G N, Germonova A L, Ivanov N G, Il'in E A, Miliavskiĭ V M
Kosm Biol Aviakosm Med. 1975 Mar-Apr;9(2):27-32.
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).
测定了对正常大鼠和运动不足大鼠具有刺激和急性作用的氨浓度。计算了每组动物慢性作用的阈值。30天的运动不足增加了动物对氨的敏感性：刺激作用阈值降低了一半。在为期30天的动物综合实验中，对配备自动生命支持系统的饲养箱内的空气进行了检测。结果证明氨是主要污染物。其浓度逐渐升高，在实验的大部分时间（28天）内保持在慢性作用阈值（40毫克/立方米）以下。
