目的通过对氨作业环境及接触人员的调查,了解低浓度氨对作业人员健康状况的影响。方法对147名氨作业岗位工人及137名办公室人员进行健康调查分析,对作业环境进行氨浓度检测,分析低浓度氨对工人健康的影响。结果氨作业岗位人员肺功能异常率高于对照组,咽痛、咳嗽、头晕等症状出现率高于对照组,尿中尿素增加人数多于对照组,差异均有高度统计学意义(均P<0.01)。结论作业人员长期接触低浓度氨对健康的影响令人担忧,提示应加强作业场所职业卫生管理,加强通风及操作人员的个人防护。 Objective To understand the effect of low concentration ammonia on the health status of workers through the investigation of ammonia working environment and contact personnel. Methods A total of 147 ammonia workers and 137 office workers were surveyed, the ammonia concentration of the working environment was tested, and the effect of low concentration ammonia on workers' health was analyzed. Results The abnormal rate of lung function in ammonia job post was higher than that in control group. The incidence of sore throat, cough, dizziness and other symptoms were higher than those in control group. The increase of urinary urea was more than that of control group (all P < 0.01). Conclusions The long-term exposure of workers to low concentrations of ammonia has a worrying effect on health, suggesting that occupational health management in workplaces should be strengthened to enhance the personal protection of ventilation and operating personnel.