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Int. J. Environ. Res. Public Health 2015, 12(10), 13466-13481; doi:10.3390/ijerph121013466

Association of Roadway Proximity with Indoor Air Pollution in a Peri-Urban Community in Lima, Peru

1
Department of Environmental Health, Boston University School of Public Health, Boston, MA 02118, USA
2
Division of Pulmonary and Critical Care, School of Medicine, John Hopkins University, Baltimore, MD 21224, USA
3
Department of Environmental Health Sciences, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD 21205, USA
4
Center for Asthma Research, A.B. PRISMA, Lima 32, Peru
5
Laboratorio de Investigacion y Desarrollo, Universidad Peruana Cayetano Heredia, Lima 31, Peru
6
Program in Global Disease Epidemiology and Control, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD 21205, USA
*
Author to whom correspondence should be addressed.
Academic Editors: Gary Adamkiewicz and M. Patricia Fabian
Received: 31 August 2015 / Revised: 26 September 2015 / Accepted: 9 October 2015 / Published: 26 October 2015
(This article belongs to the Special Issue Indoor Environmental Quality: Exposures and Occupant Health)
View Full-Text   |   Download PDF [1069 KB, uploaded 26 October 2015]   |  

Abstract

The influence of traffic-related air pollution on indoor residential exposure is not well characterized in homes with high natural ventilation in low-income countries. Additionally, domestic allergen exposure is unknown in such populations. We conducted a pilot study of 25 homes in peri-urban Lima, Peru to estimate the effects of roadway proximity and season on residential concentrations. Indoor and outdoor concentrations of particulate matter (PM2.5), nitrogen dioxide (NO2), and black carbon (BC) were measured OPEN ACCESS Int. J. Environ. Res. Public Health 2015, 12 13467 during two seasons, and allergens were measured in bedroom dust. Allergen levels were highest for dust mite and mouse allergens, with concentrations above clinically relevant thresholds in over a quarter and half of all homes, respectively. Mean indoor and outdoor pollutant concentrations were similar (PM2.5: 20.0 vs. 16.9 μg/m3, BC: 7.6 vs. 8.1 μg/m3, NO2: 7.3 vs. 7.5 ppb), and tended to be higher in the summer compared to the winter. Road proximity was significantly correlated with overall concentrations of outdoor PM2.5 (rs = −0.42, p = 0.01) and NO2 (rs = −0.36, p = 0.03), and outdoor BC concentrations in the winter (rs = −0.51, p = 0.03). Our results suggest that outdoor-sourced pollutants significantly influence indoor air quality in peri-urban Peruvian communities, and homes closer to roadways are particularly vulnerable. View Full-Text
Keywords: air pollution; indoor environment; particulate matter; black carbon; nitrogen dioxide; allergens; asthma; traffic; childhood; low-income and vulnerable populations air pollution; indoor environment; particulate matter; black carbon; nitrogen dioxide; allergens; asthma; traffic; childhood; low-income and vulnerable populations
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Underhill, L.J.; Bose, S.; Williams, D.L.; Romero, K.M.; Malpartida, G.; Breysse, P.N.; Klasen, E.M.; Combe, J.M.; Checkley, W.; Hansel, N.N. Association of Roadway Proximity with Indoor Air Pollution in a Peri-Urban Community in Lima, Peru. Int. J. Environ. Res. Public Health 2015, 12, 13466-13481.

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