title: Spatial and temporal patterns of particulate matter sources and pollution in four communities in Accra, Ghana.
abstract: Sources of air pollution in developing country cities include transportation and industrial pollution, biomass fuel use, and re-suspended dust from unpaved roads. We examined the spatial patterns of particulate matter (PM) and its sources in four neighborhoods of varying socioeconomic status (SES) in Accra. PM data were from 1 week of morning and afternoon mobile and stationary air pollution measurements in each of the study neighborhoods. PM(2.5) and PM(10) were measured continuously, with matched GPS coordinates. Data on biomass fuel use were from the Ghana 2000 population and housing census and from a census of wood and charcoal stoves along the mobile monitoring paths. We analyzed the associations of PM with sources using a mixed-effects regression model accounting for temporal and spatial autocorrelation. After adjusting for other factors, the density of wood stoves, fish smoking, and trash burning along the mobile monitoring path as well as road capacity and surface were associated with higher PM(2.5). Road capacity and road surface variables were also associated with PM(10), but the association with biomass sources was weak or absent. While wood stoves and fish smoking were significant sources of air pollution, addressing them would require financial and physical access to alternative fuels for low-income households and communities.
authors: Harvard-MIT Division of Health Sciences and Technology, Cambridge, USA.
authors: Michael S
authors: MS
authors: Rooney
authors: Raphael E
authors: RE
authors: Arku
authors: Kathie L
authors: KL
authors: Dionisio
authors: Christopher
authors: C
authors: Paciorek
authors: Ari B
authors: AB
authors: Friedman
authors: Heather
authors: H
authors: Carmichael
authors: Zheng
authors: Z
authors: Zhou
authors: Allison F
authors: AF
authors: Hughes
authors: Jose
authors: J
authors: Vallarino
authors: Samuel
authors: S
authors: Agyei-Mensah
authors: John D
authors: JD
authors: Spengler
authors: Majid
authors: M
authors: Ezzati
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D000397:Air Pollution / Q000706:statistics & numerical data*; D002606:Charcoal; D004784:Environmental Monitoring / Q000706:statistics & numerical data; D005390:Fires; D005735:Garbage; D005869:Ghana; D006801:Humans; D052638:Particulate Matter / Q000032:analysis*; D062206:Spatial Analysis; D014934:Wood
chemical_list: D000393:Air Pollutants; D052638:Particulate Matter; D002606:Charcoal