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为了探讨长期接触低浓度氨气对肝脏的危害,我们对本县氮肥厂的230名工人进行了观察,结果如下。一、观察对象该厂分工艺车间和造气车间。工艺车间主要产品为合成氨,车间内氨气四处飘逸,不同的工种均在同一环境下作业。我们根据该厂工人按接触氨气的程度和性质,将工艺车间部分工人列为直接接触组,共88人;而将该厂的行政后勤人员、装御工人及工艺车间的机电修理工、安全监督员列为间接接触组,共142人;造气车间工人一律不列入观察对象,另选该县矿石粉厂职工112人作对照组。二、观察指标1.超声波:观察对象全部作超声波检查,肝肋下≥1cm者为阳性人数。
In order to explore the long-term exposure to low concentrations of ammonia on the liver hazards, we conducted a survey of 230 workers in the county’s nitrogen fertilizer plant, the results are as follows. First, the observation object The factory sub-technology workshop and gas-making workshop. The main product of the workshop is ammonia, and the ammonia in the workshop is elegant and flowing. Different types of work are working in the same environment. According to the factory workers according to the degree and nature of exposure to ammonia, the process plant part of the workers as a direct contact group, a total of 88 people; and the plant’s administrative support staff, workers and workers in the plant mechanic repair mechanic, safety supervision As an indirect contact group members, a total of 142 people; gas plant workers are not included in the observation of the object, the other county workers elected 112 ore powder as a control group. Second, the observation index 1. Ultrasound: all the subjects for ultrasound examination, liver ribs ≥ 1cm were positive for the number.