粉尘的生物学作用研究表明:只有吸入到肺内并沉积下来的粉尘才有可能引起尘肺。因此,为了获得生产环境中对机体产生危害的呼吸性粉尘浓度,应采集能到达肺脏的粉尘,为此目的而进行的采样只能应用选择性的采样方法。近年来,在卫生学上有重要意 Studies on the biological role of dust have shown that pneumoconiosis can only be caused by dust inhaled into the lungs and deposited. Therefore, in order to obtain a concentration of respirable dust in the production environment that is hazardous to the body, dust that reaches the lungs should be collected. Sampling for this purpose should only be performed using an alternative sampling method. In recent years, hygiene is of great importance