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麻尘是一种有机粉尘。长期接触麻尘的工人,都有程度不同的症状和体征。如表皮上呼吸道的刺激症状、肺的炎性改变等。为此我们对呼兰亚麻纺织厂从事亚麻作业进行了劳动卫生学调查,其结果如下。1 一般情况 该厂现有职工1 670人,生产工人1 580人,接尘工厂1 500人。我们按生产车间选择有代表性的采样点,测定工作呼吸带高度空气中的粉尘浓度和分散度。同时用焦磷酸法测定粉尘中游离二氧化硅含量。见表1。
Ma dust is an organic dust. Long-term exposure to dust workers, have varying degrees of symptoms and signs. Such as respiratory irritation on the epidermis, inflammatory changes in the lungs and the like. For this reason, we carried out a survey on labor hygiene of flax in Hulan Hem Textile Factory. The results are as follows. 1 General The factory has 1 670 employees, 1 580 production workers and 1 500 dust collection factories. We choose a representative sampling point according to the workshop, and measure the dust concentration and dispersion in the air of the working breathing zone. At the same time, pyrophosphoric acid was used to determine the content of free silica in dust. See Table 1.