Monolayer and Multilayer Particle Deposits on Hard Surfaces: Literature Review and Implications for Particle Resuspension in the Indoor Environment

被引:73
作者
Boor, Brandon E. [1 ]
Siegel, Jeffrey A. [1 ,2 ]
Novoselac, Atila [1 ]
机构
[1] Univ Texas Austin, Dept Civil Architectural & Environm Engn, Cockrell Sch Engn, Austin, TX 78712 USA
[2] Univ Toronto, Dept Civil Engn, Toronto, ON, Canada
基金
美国国家科学基金会;
关键词
POLYCYCLIC AROMATIC-HYDROCARBONS; WIND-TUNNEL EXPERIMENTS; IN-HOUSE DUST; TURBULENT AIR-FLOW; MICROPARTICLE DETACHMENT; AEROSOL DEPOSITS; FINE PARTICLES; INNER SURFACES; POWDER LAYER; SETTLED DUST;
D O I
10.1080/02786826.2013.794928
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Particle deposits on indoor surfaces can be as complex and diverse as the indoor environments in which they exist. Dust loading can range over several orders of magnitude, suggesting the existence of different types of particle deposits. These deposits can be broadly classified as either a monolayer, in which particles are sparsely deposited on a surface, or a multilayer, in which particles are deposited on top of one another and there is particle-to-particle adhesion and interaction. Particles within these diverse structures of settled indoor dust can become airborne through a process known as resuspension, which can occur due to airflow in ventilation ducts or human activity indoors. The dust loading and deposit structure on an indoor surface may have important implications for resuspension in the indoor environment. This literature review provides a summary of dust loads found on indoor surfaces in field studies and classifies each dust load as either a monolayer or multilayer particle deposit. The article highlights the unique attributes associated with resuspension from both types of particle deposits by summarizing key findings of the experimental resuspension literature. The fundamental differences in the resuspension process between monolayer and multilayer deposits suggest that resuspension may vary considerably among the broad spectrum of dust loads found on indoor surfaces. Copyright 2013 American Association for Aerosol Research
引用
收藏
页码:831 / 847
页数:17
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