摘要
指出了PM2.5可长时间悬浮在空中,携带大量有毒有害物质。以研究空气中PM2.5的组成成分、来源为目的,通过CNKI数据库检索的文献对比发现:大部分学者采用电子扫描电镜和水溶性离子组分分析两种分析手段进行探究,扫描电镜得出空气中PM2.5呈不规则形状且不同环境下颗粒物形状有明显差异,可根据颗粒物形貌并结合能谱分析推断其主要来源;而使用水溶性离子分析法,文献表明多数情况下会存在NO3^-、SO4^2-、NO4^+三种离子。
PM2.5 can be suspended in the air for a long time to carry a large amount of toxic and harmful substances. This paper studies the components of PM2.5 in the air. By comparing the literatures retrieved from the CNKI database, most scholars use electronic scanning electron microscopy SEM and water-soluble ionic component analysis were investigated. Scanning electron microscopy showed that PM2.5 in the air was irregular in shape and there were significant differences in the shape of particulate matter in different environments. It can be inferred from the particle morphology and combined with energy spectrum analysis. The literature shows that NO3^-、SO4^2-、NO4^+and NH+4 ions exist in most cases using water-soluble ion analysis.
作者
隽超
陈志伟
李伟
Juan Chao;Chen Zhiwei;Li Wei(School of Science,Tibet University,Lhasa,Tibet,850000,China)
出处
《绿色科技》
2019年第24期92-93,97,共3页
Journal of Green Science and Technology
基金
西藏大学大学生创新项目基金(编号:2019XCX010)
西藏大学培育基金项目(编号:ZDCZJH18-08)
