Finnish Institute of Occupational Health, Kuopio, Finland.
J Occup Environ Hyg. 2010 Jan;7(1):1-6. doi: 10.1080/15459620903298015.
Concurrent samples were collected with Andersen and IOM foam samplers to determine whether if the IOM foam sampler can be applied to collect culturable microorganisms. Two different kinds of aerosols were studied: peat dust in a power plant and mist from coolant fluid aerosolized during grinding of blades and rollers in a paper mill. In the power plant, the concentrations of fungi were 2-3 times higher in the IOM samples than in the Andersen samples. However, more fungal genera were identified in the latter case. The methods yielded similar concentrations of bacteria and actinobacteria in the power plant. On the other hand, the performance of the IOM foam sampler was very poor in the paper mill, where stress-sensitive gram-negative bacteria dominated; low concentration of bacteria was detected in only one IOM sample even though the concentration of bacteria often exceeded even the upper detection limit in the Andersen impactor samples. It could be concluded that the IOM foam sampler performs quite well for collecting inhalable fungi and actinobacteria. However, the Andersen sampler provides better information on fungal genera and concentrations of gram-negative bacteria. Personal sampling with the IOM foam sampler provided an important benefit in the power plant, where the concentration ratio of personal to stationary samples was much higher for bacteria than for inhalable or respirable dust.
同时用 Andersen 和 IOM 撞击式空气微生物采样器采集样本，以确定 IOM 撞击式空气微生物采样器是否可用于采集可培养微生物。研究了两种不同的气溶胶：来自发电厂的泥煤粉尘，以及来自纸厂叶片和滚轮研磨时雾化的冷却剂雾。在发电厂，IOM 采样器中的真菌浓度比 Andersen 采样器高 2-3 倍。然而，在后一种情况下，鉴定出的真菌属更多。这两种方法在发电厂中采集的细菌和放线菌浓度相似。另一方面，在以应激敏感的革兰氏阴性菌为主的纸厂中，IOM 撞击式空气微生物采样器的性能非常差；即使在 Andersen 撞击式空气微生物采样器的样本中，细菌浓度经常超过检测上限，IOM 采样器也仅在一个样本中检测到低浓度的细菌。因此可以得出结论，IOM 撞击式空气微生物采样器非常适合采集可吸入性真菌和放线菌。然而，Andersen 采样器提供了更多关于真菌属和革兰氏阴性菌浓度的信息。在发电厂中，个人用 IOM 撞击式空气微生物采样器进行采样有很大的好处，因为细菌的个人与固定采样的浓度比值远高于可吸入或呼吸性粉尘。
