一、前言 测定空气中的粉尘浓度,除了安全生产管理需要外,也是为了给研究防尘、降尘、除尘措施提供科学依据。用采样器测尘,是公认的一种准确性较高的办法。因此,世界上许多国家在评价矿井粉尘浓度时,除使用快速直读仪器测定外,还要用采样器测定,然后相互对照,才能作出公正的评价。 First, the foreword Determination of dust concentration in the air, in addition to safety management needs, but also to provide a scientific basis for the study dust, dust, dust measures. Dust sampling with a sampler is recognized as a more accurate method. Therefore, many countries in the world in the evaluation of mine dust concentration, in addition to the use of fast direct-reading instruments measured, but also with the sampler, and then cross-examination in order to make a fair evaluation.