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为防止厂、矿企业之中灰塵对工人健康的危害,经常测定灰塵浓度和了解其危害强度,以便评价除塵措施的效果作为改进的依据,是具有重要意义的。生产性灰塵测定方法甚多,一般可归纳为计数法和重量法两种。关于几种较常见的计数法及重量法,其优缺点已有文献探讨,并且多数学者均认为,比较合理的灰塵浓度表示方法是重量法。我国国家卫生标准101-56亦规定用重量法测定结果来表示。在重量法中,普遍
In order to prevent the dust in factories and mining enterprises from damaging the workers’ health, it is of great significance to measure the dust concentration frequently and know its harmfulness so as to evaluate the effectiveness of the dust removal measures as an improvement basis. There are many methods for the determination of productive dust, which can generally be summed up as counting and gravimetric methods. On the more common counting method and the weight method, the advantages and disadvantages of the literature has been discussed, and most scholars believe that the more reasonable method of dust concentration is gravimetric method. China’s national health standards 101-56 also provides weight gravimetric results to indicate. In gravimetric method, it is common