Association of roadway proximity with indoor air pollution in a Peri-urban community in Lima, Peru

Lindsay J. Underhill; Sonali Bose; D’Ann L. Williams; Karina M. Romero; Gary Malpartida; Patrick N. Breysse; Elizabeth M. Klasen; Juan M. Combe; William Checkley; Nadia N. Hansel

doi:10.3390/ijerph121013466

Association of roadway proximity with indoor air pollution in a Peri-urban community in Lima, Peru

Lindsay J. Underhill, Sonali Bose, D’Ann L. Williams, Karina M. Romero, Gary Malpartida, Patrick N. Breysse, Elizabeth M. Klasen, Juan M. Combe, William Checkley, Nadia N. Hansel

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

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 (PM_2.5), nitrogen dioxide (NO₂), and black carbon (BC) were measured 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 (PM_2.5: 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 PM_2.5 (r_s = −0.42, p = 0.01) and NO₂ (r_s = −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.

Original language	English (US)
Pages (from-to)	13466-13481
Number of pages	16
Journal	International journal of environmental research and public health
Volume	12
Issue number	10
DOIs	https://doi.org/10.3390/ijerph121013466
State	Published - Oct 26 2015

Keywords

Air pollution
Allergens
Asthma
Black carbon
Childhood
Indoor environment
Low-income and vulnerable populations
Nitrogen dioxide
Particulate matter
Traffic

ASJC Scopus subject areas

Pollution
Public Health, Environmental and Occupational Health
Health, Toxicology and Mutagenesis

Access to Document

10.3390/ijerph121013466

Cite this

Underhill, L. J., Bose, S., Williams, DA. L., Romero, K. M., Malpartida, G., Breysse, P. N., Klasen, E. M., Combe, J. M., Checkley, W., & Hansel, N. N. (2015). Association of roadway proximity with indoor air pollution in a Peri-urban community in Lima, Peru. International journal of environmental research and public health, 12(10), 13466-13481. https://doi.org/10.3390/ijerph121013466

Underhill, LJ, Bose, S, Williams, DAL, Romero, KM, Malpartida, G, Breysse, PN, Klasen, EM, Combe, JM, Checkley, W & Hansel, NN 2015, 'Association of roadway proximity with indoor air pollution in a Peri-urban community in Lima, Peru', International journal of environmental research and public health, vol. 12, no. 10, pp. 13466-13481. https://doi.org/10.3390/ijerph121013466

@article{133f9b6a7cee448cac966c3e6b69df4e,

title = "Association of roadway proximity with indoor air pollution in a Peri-urban community in Lima, Peru",

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 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.",

keywords = "Air pollution, Allergens, Asthma, Black carbon, Childhood, Indoor environment, Low-income and vulnerable populations, Nitrogen dioxide, Particulate matter, Traffic",

author = "Underhill, {Lindsay J.} and Sonali Bose and Williams, {D{\textquoteright}Ann L.} and Romero, {Karina M.} and Gary Malpartida and Breysse, {Patrick N.} and Klasen, {Elizabeth M.} and Combe, {Juan M.} and William Checkley and Hansel, {Nadia N.}",

note = "Publisher Copyright: {\textcopyright} 2015 by the authors; licensee MDPI, Basel, Switzerland.",

year = "2015",

month = oct,

day = "26",

doi = "10.3390/ijerph121013466",

language = "English (US)",

volume = "12",

pages = "13466--13481",

journal = "International journal of environmental research and public health",

issn = "1661-7827",

publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",

number = "10",

}

TY - JOUR

T1 - Association of roadway proximity with indoor air pollution in a Peri-urban community in Lima, Peru

AU - Underhill, Lindsay J.

AU - Bose, Sonali

AU - Williams, D’Ann L.

AU - Romero, Karina M.

AU - Malpartida, Gary

AU - Breysse, Patrick N.

AU - Klasen, Elizabeth M.

AU - Combe, Juan M.

AU - Checkley, William

AU - Hansel, Nadia N.

PY - 2015/10/26

Y1 - 2015/10/26

N2 - 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 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.

AB - 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 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.

KW - Air pollution

KW - Allergens

KW - Asthma

KW - Black carbon

KW - Childhood

KW - Indoor environment

KW - Low-income and vulnerable populations

KW - Nitrogen dioxide

KW - Particulate matter

KW - Traffic

UR - http://www.scopus.com/inward/record.url?scp=84945358741&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84945358741&partnerID=8YFLogxK

U2 - 10.3390/ijerph121013466

DO - 10.3390/ijerph121013466

M3 - Article

C2 - 26516875

AN - SCOPUS:84945358741

SN - 1661-7827

VL - 12

SP - 13466

EP - 13481

JO - International journal of environmental research and public health

JF - International journal of environmental research and public health

IS - 10

ER -

Association of roadway proximity with indoor air pollution in a Peri-urban community in Lima, Peru

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this