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近年来,在探讨矽肺发病机理中,因为游离二氧化矽能引起肺部组织产生纤维化病变,所以我国卫生部在规定对劳动现场空气中浮游粉尘浓度进行测定的同时,也必须对粉尘的分散度和游离二氧化矽含量进行定量分析。在实际工作中,由于在作业现场采集浮游粉尘样品有困难,故各地分析游离二氧化矽含量样品多取自原成品原料(如从井下取岩石、煤块)。对于成品原料与该料被破
In recent years, in exploring the pathogenesis of silicosis, because free silica can cause fibrosis in the lung tissue, the Ministry of Health of China, while stipulating the determination of the concentration of suspended dust in the air of the working site, must also disperse the dust Degree and free silica content for quantitative analysis. In actual work, it is difficult to collect samples of floating dust on the job site. Therefore, the samples of free silica content collected from various places are mostly taken from the raw materials (such as rock and coal from underground). For the finished product and the material is broken