相关实验视频
Updated: Jun 12, 2025
05:58
Deposition of Porous Sorbents on Fabric Supports
Published on: June 12, 2018
6.5K
工程纳米颗粒的潜在透在保护服装面料的实际使用下
Natalie Ireland1, Yi-Hsuan Chen1, Candace Su-Jung Tsai1
1Department of Environmental Health Sciences, Fielding School of Public Health, University of California, Los Angeles, California 90095, United States.
Journal of chemical health & safety
|September 27, 2024
概括
工程纳米粒子 (ENPs) 对工人构成风险. 这项研究发现,与其他织物相比,Tyvek实验室外套对ENP透提供了更好的保护,孔隙性和织物结构是关键因素.
科学领域:
- 职业健康和安全问题 职业健康和安全问题
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
背景情况:
- 工程纳米颗粒 (ENP) 越来越多地用于商业产品,引发了人们对吸入和皮肤接触对工人的潜在健康风险的担忧.
- 关于标准实验室外套对ENP透的保护效果的研究有限.
研究的目的:
- 通过四种常见的实验室外套织物研究多壁碳纳米管 (CNT),碳黑 (CB) 和纳米氧化 (Al2O3) 的透.
- 确定影响ENP透的关键织物特性,并确定最具保护性的材料.
主要方法:
- 使用直接读取仪器测试了CNTs,CB和Al2O3通过棉花,聚烯,聚棉花和Tyvek面料的透效率.
- 分析了织物结构,厚度,多孔性和表面化学,以及ENP特征 (形状,形态,疏水性).
- 利用显微镜评估织物表面的粒子形态和污染水平.
主要成果:
- 与CB (15.74%) 和Al2O3 (11.65%) 相比,CNTs在所有织物中透率明显较低 (平均为1.83%) ,这是由于其纤维形状和聚合物.
- 泰维克面料提供了最高的保护,穿透率最小 (CB为0.06%,Al2O3为0.11%).
- 聚烯织物是最不具保护性的,其透率高 (40.36%为CB,15.77%为Al2O3),与其高孔度 (0.77) 相对应.
结论:
- 布料的多孔性,结构和厚度是ENP透的关键决定因素,而不是表面化学.
- 泰维克的无孔和疏水性质使其成为保护ENP透的最有效的织物.
- 了解这些织物特性对于选择适当的个人防护设备来防止纳米粒子暴露至关重要.
相关概念视频
01:20Personal Protective Equipment
1.5K
Personal protective equipment (PPE) is unique clothing or equipment worn by an employee to minimize or prevent exposure to infectious agents. PPE creates a barrier between the employee and the infectious materials. PPE must be readily available in the patient care area. PPE includes gloves, gowns and aprons, masks and respirators, goggles, face shields, shoes, and headcovers:
1.5K
01:22PPE Use in Healthcare Settings I: Donning
938
Donning PPE must be completed before contact with the patient. This process protects from infectious agents. The sequence and action included in each donning are critical, and the steps must be systematic to avoid exposure to pathogens. The institutional policy also needs to be followed while donning PPE. The pre-donning preparations are gathering equipment, inspecting the PPE equipment for tears, holes, or damage, removing jewelry, removing any garments below the elbows, and tying the hair...
938