导致颗粒物再悬浮的室内人类活动的源强。

Source strengths for indoor human activities that resuspend particulate matter.

作者信息

Ferro Andrea R, Kopperud Royal J, Hildemann Lynn M

机构信息

Department of Civil and Environmental Engineering, Terman Engineering Center, Stanford University, Stanford, California 94305-4020, USA.

出版信息

Environ Sci Technol. 2004 Mar 15;38(6):1759-64. doi: 10.1021/es0263893.

DOI:10.1021/es0263893

PMID:15074686

Abstract

A mathematical model was applied to continuous indoor and outdoor particulate matter (PM) measurements to estimate source strengths for a variety of prescribed human activities that resuspend house dust in the home. Activities included folding blankets, folding clothes, dry dusting, making a bed, dancing on a rug, dancing on a wood floor, vacuuming, and walking around and sitting on upholstered furniture. Although most of the resuspended particle mass from these activities was larger than 5 microm in diameter, the resuspension of PM2.5 and PM5 was substantial, with source strengths ranging from 0.03 to 0.5 mg min(-1) for PM2.5 and from 0.1 to 1.4 mg min(-1) for PM5. Source strengths for PM > 5 microm could not be quantified due to instrument limitations. The source strengths were found to be a function of the number of persons performing the activity, the vigor of the activity, the type of activity, and the type of flooring.

摘要

应用数学模型对室内外颗粒物（PM）的连续测量数据进行分析，以估算各种规定的人类活动使室内灰尘再悬浮的源强。这些活动包括折叠毛毯、折叠衣物、干式除尘、整理床铺、在地毯上跳舞、在木地板上跳舞、吸尘，以及在软垫家具上走动和就坐。尽管这些活动中再悬浮的大部分颗粒物直径大于5微米，但PM2.5和PM5的再悬浮量也相当可观，PM2.5的源强范围为0.03至0.5毫克/分钟，PM5的源强范围为0.1至1.4毫克/分钟。由于仪器限制，无法量化直径大于5微米的颗粒物的源强。研究发现，源强是进行活动的人数、活动强度、活动类型和地板类型的函数。