McAulay I R, Carey G C, Merrett J D, McClarin R H, Elwood P C, Pemberton J
Br J Ind Med. 1965 Oct;22(4):305-10. doi: 10.1136/oem.22.4.305.
The concentrations in the air of total and of respirable (less than 7 microns equivalent diameter) dust were measured in 142 workrooms of 17 Northern Ireland flax spinning mills using a hexhlet air sampler. Neither the distribution of total nor of respirable dust concentrations (mg./100 m. air) measured in each of four large workrooms conformed to the normal (or Gaussian) distribution, but it is shown that the logarithms (to the base 10) of these concentrations are normally distributed. In order to make valid statistical comparisons between the dustiness of the different types of room, mean log. concentrations are therefore used. The mean log. concentrations of total and of respirable dust, and the 95% confidence limits derived from these, were calculated for each room surveyed. For total and respirable dust the ranges of mean log. concentrations followed in brackets by the respective antilogs. (mg./100 m. air) were as follows: [Table: see text] Thus, dust concentrations varied widely within each category of room, although in general the pre-preparing rooms had the highest levels followed by other preparing rooms, other finishing rooms, and wet finishing rooms, in that order.
使用六联空气采样器，对北爱尔兰17家亚麻纺织厂的142间工作室空气中的总粉尘浓度和可吸入粉尘（等效直径小于7微米）浓度进行了测量。在四个大型工作室中，所测量的总粉尘浓度和可吸入粉尘浓度（毫克/100立方米空气）的分布均不符合正态（或高斯）分布，但结果表明，这些浓度的常用对数（以10为底）呈正态分布。因此，为了对不同类型工作室的含尘量进行有效的统计比较，采用了平均对数浓度。计算了每个被调查工作室的总粉尘和可吸入粉尘的平均对数浓度，以及由此得出的95%置信限。总粉尘和可吸入粉尘的平均对数浓度范围（括号内为各自的反对数，单位为毫克/100立方米空气）如下：[表格：见原文] 因此，尽管一般来说，预准备车间的粉尘浓度最高，其次是其他准备车间、其他整理车间和湿整理车间，但各类工作室内部的粉尘浓度差异很大。
