O'Brien D, Baron P, Willeke K
Am Ind Hyg Assoc J. 1986 Jul;47(7):386-92. doi: 10.1080/15298668691389928.
Several real-time particle sizing instruments were evaluated for measuring the size distribution and concentration of the aerosol produced during the high speed grinding of gray iron castings. Aerosol was sampled in the airstream entrained by the motion of a spinning grinding wheel in a pilot grinding operation. Measurement methods based on differing physical principles were selected for evaluation and compared: particle inertia (aerodynamic particle sizer and quartz crystal microbalance cascade impactor); light scattering (laser aerosol spectrometer); and projected-area microscopy (scanning electron microscope). Inferences of aerodynamic diameter based on measurements by the laser aerosol spectrometer consistently undersized that determined by the aerodynamic particle sizer by a factor of 1.5. Estimates of aerodynamic diameters from projected area diameters determined by scanning electron microscopy differed from those obtained by the aerodynamic particle sizer by a factor of 2. Differences appeared to be a non-linear function of particle diameter. Estimates of respirable mass determined from mass-weighted particle size spectra varied by a factor of 6 between the largest estimate (scanning electron microscope) and the smallest estimate (laser aerosol spectrometer).
对几种实时颗粒粒度测量仪器进行了评估，以测量灰口铸铁高速磨削过程中产生的气溶胶的粒度分布和浓度。在中试磨削操作中，在由旋转砂轮运动夹带的气流中对气溶胶进行采样。选择了基于不同物理原理的测量方法进行评估和比较：颗粒惯性法（气动力学颗粒粒度分析仪和石英晶体微量天平级联冲击器）；光散射法（激光气溶胶光谱仪）；以及投影面积显微镜法（扫描电子显微镜）。基于激光气溶胶光谱仪测量得出的空气动力学直径推断值始终比气动力学颗粒粒度分析仪测定的值小1.5倍。通过扫描电子显微镜由投影面积直径得出的空气动力学直径估计值与气动力学颗粒粒度分析仪获得的值相差2倍。差异似乎是颗粒直径的非线性函数。根据质量加权粒度谱确定的可吸入质量估计值，在最大估计值（扫描电子显微镜）和最小估计值（激光气溶胶光谱仪）之间相差6倍。
