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对７３例制冷压缩机作业工人及同厂不接触有害因素的１４２名工人的健康状况进行了调查，结果：作业工人头昏、头痛、失眠、多梦等神经衰弱症候较对照组明显增高（Ｐ＜０．０５），同时，咳嗽、咯痰、胸部肺纹理改变和肺功能异常率等呼吸系统症状和体征均较对照组明显增多（Ｐ＜０．０５）。排除了吸烟这一干扰因素，结果差异仍有显著性意义。认为与长期接触低浓度氨气有关。听力检查结果：接触组各频段的听阈均值都明显高于对照组，其中以高频段的听阈均值为高，说明制冷压缩机噪声主要造成作业工人的高频段听损。
The health condition of 73 refrigerating compressor workers and 142 workers who did not contact with harmful factors in the same factory was investigated. The results showed that workers with dizziness, headache, insomnia and multiple dreams were significantly higher than the control group (P <0.05). Meanwhile, respiratory symptoms and signs such as cough, expectoration, changes in chest lungs and lung function abnormalities were significantly higher than those in control group (P <0.05). Ruled out the interference factors of smoking, the results are still significant differences. Considered to be associated with long-term exposure to low concentrations of ammonia. Hearing test results: The mean hearing threshold of each frequency band in the exposure group was significantly higher than that of the control group, and the average of the hearing thresholds in the high frequency band was high, indicating that the noise of the refrigeration compressor mainly caused the hearing loss of the workers in the high frequency band.