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应用双区模型估算医用激光产生的颗粒物暴露量。

Application of a two-zone model to estimate medical laser-generated particulate matter exposures.

作者信息

Lopez Ramon, Lacey Steven E, Jones Rachael M

机构信息

a Department of Environmental Health Science , Richard M. Fairbanks School of Public Health, Indiana University , Indianapolis , Indiana.

出版信息

J Occup Environ Hyg. 2015;12(5):309-13. doi: 10.1080/15459624.2014.989361.

Abstract

We estimated particulate matter exposures for two simulated medical laser procedures using a near-field/far-field model. Size-specific mass emission rates obtained from a laboratory-based emission chamber study were used with estimated room size, air exchange rate, and interflow between zones to demonstrate the potential exposure range. Modeled steady-state concentrations for the near-field ranged between 80 and 2140 μg/m(3) and between 40 and 1650 μg/m(3) in the far-field. Results indicate concentrations in the simulated scenarios are similar to those obtained from limited field assessments conducted in hospital operating rooms. Since new medical laser technologies and applications continue to grow, modeled occupational exposures of medical laser-generated particulate matter can be useful in better understanding these exposures in the clinical environment, and to inform control strategies.

摘要

我们使用近场/远场模型估算了两种模拟医学激光手术中的颗粒物暴露情况。从基于实验室的排放室研究中获得的特定粒径质量排放率,与估计的房间大小、空气交换率以及区域间的气流一起使用,以展示潜在的暴露范围。近场的模拟稳态浓度范围为80至2140μg/m³,远场为40至1650μg/m³。结果表明,模拟场景中的浓度与在医院手术室进行的有限现场评估所获得的浓度相似。由于新的医学激光技术和应用不断发展,模拟医学激光产生的颗粒物的职业暴露情况有助于更好地了解临床环境中的这些暴露,并为控制策略提供信息。

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