Characterization of source-specific air pollution exposure for a large population-based Swiss cohort (SAPALDIA)
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Authors
Liu, L.-J. Sally
Curjuric, Ivan
Keidel, Dirk
Heldstab, Jürg
Künzli, Nino
Ackermann-Liebrich, Ursula
Schindler, Christian
Author (Corporation)
Publication date
2007
Typ of student thesis
Course of study
Collections
Type
01A - Journal article
Editors
Editor (Corporation)
Supervisor
Parent work
Environmental Health Perspectives
Special issue
DOI of the original publication
Link
Series
Series number
Volume
115
Issue / Number
11
Pages / Duration
1638-1645
Patent number
Publisher / Publishing institution
National Institute of Environmental Health Sciences
Place of publication / Event location
Durham
Edition
Version
Programming language
Assignee
Practice partner / Client
Abstract
Background: Although the dispersion model approach has been used in some epidemiologic studies to examine health effects of traffic-specific air pollution, no study has evaluated the model predictions vigorously.
Methods: We evaluated total and traffic-specific particulate matter < 10 and < 2.5 microm in aero-dynamic diameter (PM(10), PM(2.5)), nitrogren dioxide, and nitrogen oxide concentrations predicted by Gaussian dispersion models against fixed-site measurements at different locations, including traffic-impacted, urban-background, and alpine settings between and across cities. The model predictions were then used to estimate individual subjects' historical and cumulative exposures with a temporal trend model.
Results: Modeled PM(10) and NO(2) predicted at least 55% and 72% of the variability of the measured PM(10) and NO(2), respectively. Traffic-specific pollution estimates correlated with the NO(x) measurements (R(2) >or=0.77) for background sites but not for traffic sites. Regional background PM(10) accounted for most PM(10) mass in all cities. Whereas traffic PM(10) accounted for < 20% of the total PM(10), it varied significantly within cities. The modeling error for PM(10) was similar within and between cities. Traffic NO(x) accounted for the majority of NO(x) mass in urban areas, whereas background NO(x) accounted for the majority of NO(x) in rural areas. The within-city NO(2) modeling error was larger than that between cities.
Conclusions: The dispersion model predicted well the total PM(10), NO(x), and NO(2) and traffic-specific pollution at background sites. However, the model underpredicted traffic NO(x) and NO(2) at traffic sites and needs refinement to reflect local conditions. The dispersion model predictions for PM(10) are suitable for examining individual exposures and health effects within and between cities.
Keywords
cohort study, cumulative exposure, dispersion model, exposure assessment, long-term exposure
Subject (DDC)
300 - Sozialwissenschaften, Soziologie, Anthropologie
600 - Technik
610 - Medizin und Gesundheit
600 - Technik
610 - Medizin und Gesundheit
Event
Exhibition start date
Exhibition end date
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Conference end date
Date of the last check
ISBN
ISSN
0091-6765
1552-9924
1552-9924
Language
English
Created during FHNW affiliation
No
Strategic action fields FHNW
Publication status
Published
Review
Peer review of the complete publication
Open access category
Diamond
License
Citation
LIU, L.-J. Sally, Ivan CURJURIC, Dirk KEIDEL, Jürg HELDSTAB, Nino KÜNZLI, Lucy BAYER-OGLESBY, Ursula ACKERMANN-LIEBRICH und Christian SCHINDLER, 2007. Characterization of source-specific air pollution exposure for a large population-based Swiss cohort (SAPALDIA). Environmental Health Perspectives. 2007. Bd. 115, Nr. 11, S. 1638–1645. DOI 10.1289/ehp.10177. Verfügbar unter: https://doi.org/10.26041/fhnw-8910