Source apportionment of atmospheric urban aerosol based on weekdays/weekend variability: evaluation of road re-suspended dust contribution

被引：120

作者：

Almeida, SM

Pio, CA

Freitas, MC

Reis, MA

Trancoso, MA

机构：

[1] Univ Aveiro, DAO, P-3810193 Aveiro, Portugal

[2] Inst Tecnol & Nucl, P-2686953 Sacavem, Portugal

[3] Inst Nacl Engn Tecnol & Inovacao, LAACQ, P-1649038 Lisbon, Portugal

来源：

ATMOSPHERIC ENVIRONMENT | 2006年 / 40卷 / 11期

关键词：

PM2.5; PM2; 5-10; weekday variability; receptor modelling; road traffic;

D O I：

10.1016/j.atmosenv.2005.11.046

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

During I year, twice per week (one working day and one Sunday), 24-h averaged, separated fine and coarse atmospheric aerosol were measured, for total mass and chemical composition, in a suburban site on the outskirts of Lisbon. The relative concentration variability between working days and sundays allowed a better insight into the sources of atmospheric particulate matter. Receptor modelling based on Principal Component Analysis and Multilinear Regression applied to sunday and working day samples revealed marked differences during weekdays, in autumn/winter period. Based on the characteristics of the Principal Components it was possible to conclude that during autumn/winter, a predominant fraction of coarse and fine soil dust provides from anthropogenic activities, being presumably associated with road dust resuspension by road traffic. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：2058 / 2067

页数：10

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