Association of size-resolved airborne particles with foot traffic inside a carpeted hallway

被引：16

作者：

Cheng, Kai-Chung ^{[1
]}

Goebes, Marian D. ^{[1
]}

Hildemann, Lynn M. ^{[1
]}

机构：

[1] Stanford Univ, Dept Civil & Environm Engn, Stanford, CA 94305 USA

来源：

ATMOSPHERIC ENVIRONMENT | 2010年 / 44卷 / 16期

关键词：

Foot traffic; Aerosol; Hospital; Autocorrelation; Box model; PARTICULATE MATTER; RESUSPENSION; RESIDENCE;

D O I：

10.1016/j.atmosenv.2010.02.027

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The effect of foot traffic on indoor particle resuspension was evaluated by associating non-prescribed foot traffic with simultaneous size-resolved airborne particulate matter (PM) concentrations in a northern California hospital. Foot traffic and PM were measured every 15 min in a carpeted hallway over two 27-h periods. The PM concentration in the hallway was modeled based on the foot traffic intensity, including the previous PM concentration via an autocorrelation regression method based on the well-mixed box model. All 5 size ranges of PM, ranging from 0.75-1 mu m to 5-7.5 mu m, were highly correlated with foot traffic measurements for both monitoring periods (p < 0001, R(2) = 0 87-0 90). However, correlations during daytime hours were less significant than nighttime. Coefficients found via this autoregressive analysis can be interpreted to reveal (i) time-independent contributions of walking activities on PM levels for a specific location: and (ii) size-specific characteristics of the resuspended PM. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：2062 / 2066

页数：5

共 14 条

[1] Relative contribution of outdoor and indoor particle sources to indoor concentrations [J].

Abt, E ;

Suh, HH ;

Catalano, P ;

Koutrakis, P .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2000, 34 (17) :3579-3587

[2] Measurement of airborne fungal spore dispersal from three types of flooring materials [J].

Buttner M.P. ;

Cruz-Perez P. ;

Stetzenbach L.D. ;

Garrett P.J. ;

Luedtke A.E. .

Aerobiologia, 2002, 18 (1) :1-11

[3]

FERRO A, 2002, THESIS STANFORD U ST

[4] Elevated personal exposure to particulate matter from human activities in a residence [J].

Ferro, AR ;

Kopperud, RJ ;

Hildemann, LM .

JOURNAL OF EXPOSURE ANALYSIS AND ENVIRONMENTAL EPIDEMIOLOGY, 2004, 14 (Suppl 1) :S34-S40

[5] Source strengths for indoor human activities that resuspend particulate matter [J].

Ferro, AR ;

Kopperud, RJ ;

Hildemann, LM .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2004, 38 (06) :1759-1764

[6] Effect of building construction on Aspergillus concentrations in a hospital [J].

Goebes, Marian D. ;

Baron, Ellen Jo ;

Mathews, Kathleen L. ;

Hildemann, Lynn M. .

INFECTION CONTROL AND HOSPITAL EPIDEMIOLOGY, 2008, 29 (05) :462-464

[7] Resuspension of allergen-containing particles under mechanical and aerodynamic disturbances from human walking [J].

Gomes, C. ;

Frelhaut, J. ;

Bahnfleth, W. .

ATMOSPHERIC ENVIRONMENT, 2007, 41 (25) :5257-5270

[8] Characterization of indoor particle sources using continuous mass and size monitors [J].

Long, CM ;

Suh, HH ;

Koutrakis, P .

JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION, 2000, 50 (07) :1236-1250

[9]

Luoma M, 2000, AIHAJ, V61, P658

[10] Characterization of particulate emissions from occupant activities in offices [J].

Luoma, M ;

Batterman, SA .

INDOOR AIR-INTERNATIONAL JOURNAL OF INDOOR AIR QUALITY AND CLIMATE, 2001, 11 (01) :35-48

← 1 2 →