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含有银的布面膜:评估现状
Melissa S Blevens1, Homero F Pastrana2, Hannah C Mazzotta3
1Environmental Health, Department of Environmental and Radiological Health Sciences, Colorado State University, 1681 Campus Delivery, Fort Collins, Colorado 80523, United States.
许多布面膜声称纳米银具有抗菌和抗病毒特性. 然而,过是预防病毒的关键,声明需要更严格的验证和规范,以确保产品的有效性.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 公共卫生 公共卫生
背景情况:
- 在COVID-19大流行期间,对纳米银布面膜的需求增加.
- 抗病毒和抗微生物要求是常见的,但过是对病毒传播的主要防御.
- 银的已知抗菌和新兴抗病毒特性推动其在织品中的使用.
研究的目的:
- 评估40种含有银的布面膜的抗病毒和抗菌性声明的有效性.
- 评估现有的认证,专利或文献是否证实了制造商的说法.
- 确定对这些产品需要更严格的联邦法规和测试标准.
主要方法:
- 用公开可用的方法分析了40个带有银色声称的面罩.
- 根据专利技术,ISO/ASTM认证,EPA注册和同行评审文献验证权利要求.
- 扫描电子显微镜 (SEM) 确认两个选定的面具中存在银.
主要成果:
- 在40种口罩中,有21种口罩有实证的抗病毒或抗菌性声明.
- SEM证实了两种面具中的纳米银颗粒:面具A (90-200nm化物附着的银/铜离子) 和面具B (250nm银/颗粒).
- 现有的认证和专利不足以保证索赔的可信性.
结论:
- 目前对纳米银面具声明的验证方法是不充分的.
- 更严格的联邦法规和标准化测试是必要的,以确保产品的有效性.
- 建议制定一个面具吸入标准.
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