粉尘作业场所环境浓度与接触浓度关系研究

The Relationship between Environmental Concentration and Exposure Concentration in the Airborne Dust of Workplace

采用瞬时定点与个体采样测定粉尘作业场所环境与接触浓度，对二者间的关系进行研究。结果表明，在人工包装、自动包装作业场所环境与接触浓度的原始序列间存在较好的共变从属关系（ｒ分别为０．９４１４，０．９９７７）；在非稳定的接包作业场所两浓度一次累加生成后，具有较好的共变从属关系（ｒ＝０．９９４５）。因此，在较稳定的粉尘作业场所环境与接触浓度认为是来自同一总体，即正态双变量随机抽样。非稳定作业场所一次累加生成后，可以考虑用环境浓度估计接触浓度。

The authors studied the relationship between environmental concentration and exposure concentration in the airborne dust of workplaces, using instantaneous fixed points sampling and personal wear sampling. The results showed that there was a correlation between two kinds of concentrations in the automatic and man made packing workplaces( r =0.9914,0.9977). A relationship between them in the unsteady workplace was found after analysed by one accumulated generating operation (1 AGO)( r =0.9945). The samples of environmental and exposure concentrations could be thought from the same normal distribution, that is, the bivariable random sampling in the normal distribution population. Moreover, the exposure concentration could be estimated by environmental one after 1 AGO in the unsteady workplace of airborne dust.