摘要
目的为推动作者曾提出的含游离二氧化硅粉尘累积肺作用值（Ｄａ＝Σｎｊ＝１［（Ｙ－Ｙｊ）Ｋ＋１］Ｅｊ）的应用和讨论。方法用实例详细介绍了该值的计算方法，以及应用相应公式（Ｅｌ＝Ｄａ／｛［Ｋ（ｎ２－ｎ）／２＋ｎ］－［Ｋ（ｎ２－ｎ）／２＋ｎ１］｝）推算容许浓度等过程。结果用Ｄａ作为游离ＳｉＯ２粉尘接触剂量指标，不仅解决了用以往粉尘剂量指标时粉尘接触剂量与反应不同步的问题，而且用相应公式推算容许浓度时，控制一定发病率的时间，包括接触者开始接尘至整个寿命（５０年：工作３０年＋脱离工作后２０年）。
The method of calculating the accumulated effect value of dust containing free silica on lung Da=Σnj=1[(Y-Yj)K+1]Ej advanced by the author before and the process of reckoning MAC with relevant formula El=Da/{[K(n2-n)/2+n]-[K(n21-n)/2+n1)]} were explained in detail by a concrete instance to promote its application and discussion.Using Da as an exposed dose index of dust containing free silica,not only resolved the problem of that the dose and the response were not synchronous,but also controlled the period of certain incidence including the time beignning to be exposed up to all lifetime when MAC(or TLV) was reckoned by the relevant formula.The MAC reckoned like this is reasonable for keeping the workers exposed to dust in good health in all their life time.
出处
《中华劳动卫生职业病杂志》
CAS
CSCD
1998年第2期99-102,共4页
Chinese Journal of Industrial Hygiene and Occupational Diseases
