Pollutant Concentrations within Households in Lao PDR and Association with Housing Characteristics and Occupants' Activities

Title
Pollutant Concentrations within Households in Lao PDR and Association with Housing Characteristics and Occupants' Activities
Authors
Morawska, L; Mengersen, K; Wang, H; Tayphasavanh, F; Darasavong, K; Holmes, NS
Keywords
PARTICULATE MATTER; AIR-POLLUTION; COMBUSTION; INDIA; CHINA; WOOD; PARTICLES; EXPOSURE; IMPACT
Issue Date
2011
Publisher
ENVIRON SCI TECHNOL
Citation
Environ. Sci. Technol.;01-Feb;2011;45;3
Abstract
The paper presents the results of a study conducted to investigate indoor air quality within residential dwellings in Lao PDR. Results from PM(10), CO, and NO(2) measurements inside 167 dwellings in Lao PDR over a five month period (December 2005-April 2006) are discussed as a function of household characteristics and occupant activities. Extremely high PM(10) and NO(2) concentrations (12 h mean PIA concentrations 1275 +/- 98 mu g m(-3) and 1183 +/- 99 mu g m(-3) in Vientiane and Bolikhamxay provinces, respectively; 12 h mean NO(2) concentrations 1210 +/- 94 mu g m(-3) and 561 +/- 45 mu g m(-3) in Vientiane and Bolikhamxay, respectively) were measured within the dwellings. Correlations, ANOVA analysis (univariate and multivariate), and linear regression results suggest a substantial contribution from cooking and smoking. The PM(10) concentrations were significantly higher in houses without a chimney compared to houses in which cooking occurred on a stove with a chimney. However, no significant differences in pollutant concentrations were observed as a function of cooking location. Furthermore, PM(10) and NO(2) concentrations were higher in houses in which smoking occurred, suggestive of a relationship between increased indoor concentrations and smoking (0.05 < p < 0.10). Resuspension of dust from soil floors was another significant source of PM(10) inside the house (634 mu g m(-3), p < 0.05).
URI
http://hdl.handle.net/11267/2550
ISSN
0013-936X
Appears in Collections:
2.Ministry of Health > Journal articles
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