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城市尘埃纳米颗粒的分离和制备,用于生物研究

Alexandr I Ivaneev¹, Mikhail S Ermolin¹, Roman A Zinovkin²

¹Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, 19 Kosygin Street, Moscow 119991, Russia.

Analytical methods : advancing methods and applications

|December 9, 2024

概括

研究人员开发了一种方法来隔离和准备城市尘埃纳米粒子 (NP) 用于生物研究. 这一过程使得NP中有毒元素的分析成为可能,这对于了解与空气污染相关的公共卫生风险至关重要.

科学领域:

环境科学环境科学
毒理学毒理学毒理学
纳米技术纳米技术

背景情况:

城市尘埃纳米颗粒 (NP) 存在潜在的公共卫生风险,但由于NP隔离和生物测试准备方面的挑战,研究受到限制.
现有的分离和分析城市尘埃NP的方法是复杂的,不足以进行生物研究.

研究的目的:

开发一种可靠的方法来分离,灭菌和制备适合生物测试的城市尘埃纳米粒子 (NP).
描述孤立的NP并评估它们中的有毒元素度.

主要方法:

卷状管场流分化被用来从大量城市尘埃样本中分离NP.
专被用作稳定剂,酸盐缓冲模拟生理条件.
紫外线处理用于杀菌,超过用于NP的预度.

主要成果:

一小部分NP被成功分离出来,平均粒子大小为220nm.
隔离的NP含有微生物,需要进行5分钟的紫外线灭菌处理.
在NP中,有毒元素 (Cu,Zn,As,Mo,Cd,Sn,Sb,Hg,Pb,Bi) 的度高于散尘中的10倍.

结论:

开发的程序有效地隔离,消毒和准备城市尘埃NP进行生物研究.
城市尘埃NP中高水平的有毒元素突出显示了对公共健康的重大潜在威胁.
这种方法为未来对城市尘埃NP的毒理和生物研究提供了基础.

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