Abstract The control of airborne particles and bio contaminants is a key factor in several industries in order to avoid product defects, to assure process quality and to protect personnel and outdoor environment. Cleanrooms and controlled environments are spaces with strict control of airborne contaminants and thermo-hygrometric parameters. Humans are one of the main sources of contamination in clean environments. A correct technical clothing system reduces the contamination released by humans. Despite substantial work done in this field, it is difficult to compare previous results due to differences in test rig, procedures, gowning systems and sampling locations. This study implements a dispersal chamber test methodology and an experimental campaign on 7 combinations of technical clothing and undergarments. It presents comparative experimental results of total particle and microbiological contaminants released by humans in terms of emission rate (ER). It is found that ageing factor, sterilization, physical movements, donning and warping type, and materials influence the human ER in clean environments. Sterile garment systems entirely composed of synthetic materials decrease the particle release compared to the non-sterile mixed ones. Sterile garment systems show a better performance, achieving 10 to 30 times fewer particle emission rates in wider movements and almost zero microbiological release. A low human contamination ER benefits the cleanroom design and operation, either reducing the energy consumption or increasing the number of personnel in clean environments.

中文翻译：

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洁净室服装组合的空气中颗粒和微生物人体排放率调查

摘要 空气中颗粒物和生物污染物的控制是许多行业中避免产品缺陷、确保过程质量以及保护人员和室外环境的关键因素。洁净室和受控环境是严格控制空气污染物和温湿度参数的空间。人类是清洁环境中的主要污染源之一。正确的技术服装系统可以减少人类释放的污染物。尽管在该领域做了大量工作，但由于试验台、程序、更衣系统和采样位置的差异，很难比较以前的结果。本研究对 7 种技术服装和内衣组合实施了分散室测试方法和实验活动。它提供了人类释放的总颗粒和微生物污染物在排放率 (ER) 方面的比较实验结果。发现老化因素、杀菌、身体运动、穿戴和翘曲类型以及材料影响清洁环境中的人类ER。与非无菌混合材料相比，完全由合成材料组成的无菌服装系统减少了颗粒释放。无菌服装系统表现出更好的性能，在更广泛的运动中实现的颗粒排放率降低 10 到 30 倍，微生物释放几乎为零。低人为污染 ER 有利于洁净室的设计和操作，无论是减少能源消耗还是增加洁净环境中的人员数量。