Liao, Jiawen ORCID: 0000-0001-8246-0542, McCracken, John P, Piedrahita, Ricardo, Thompson, Lisa ORCID: 0000-0002-8001-2057, Mollinedo, Erick, Canuz, Eduardo, De Léon, Oscar, Díaz-Artiga, Anaité, Johnson, Michael ORCID: 0000-0002-4886-1534, Clark, Maggie et al (show 8 more authors)
(2020)
The use of bluetooth low energy Beacon systems to estimate indirect personal exposure to household air pollution.
Journal of exposure science & environmental epidemiology, 30 (6).
pp. 990-1000.
Abstract
Household air pollution (HAP) generated from solid fuel combustion is a major health risk. Direct measurement of exposure to HAP is burdensome and challenging, particularly for children. In a pilot study of the Household Air Pollution Intervention Network (HAPIN) trial in rural Guatemala, we evaluated an indirect exposure assessment method that employs fixed continuous PM<sub>2.5</sub> monitors, Bluetooth signal receivers in multiple microenvironments (kitchen, sleeping area and outdoor patio), and a wearable signal emitter to track an individual's time within those microenvironments. Over a four-month period, we measured microenvironmental locations and reconstructed indirect PM<sub>2.5</sub> exposures for women and children during two 24-h periods before and two periods after a liquefied petroleum gas (LPG) stove and fuel intervention delivered to 20 households cooking with woodstoves. Women wore personal PM<sub>2.5</sub> monitors to compare direct with indirect exposure measurements. Indirect exposure measurements had high correlation with direct measurements (n = 62, Spearman ρ = 0.83, PM<sub>2.5</sub> concentration range: 5-528 µg/m<sup>3</sup>). Indirect exposure had better agreement with direct exposure measurements (bias: -17 µg/m<sup>3</sup>) than did kitchen area measurements (bias: -89 µg/m<sup>3</sup>). Our findings demonstrate that indirect exposure reconstruction is a feasible approach to estimate personal exposure when direct assessment is not possible.
Item Type: | Article |
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Uncontrolled Keywords: | HAPIN investigators, Humans, Air Pollutants, Pilot Projects, Air Pollution, Air Pollution, Indoor, Environmental Monitoring, Child, Rural Population, Female, Particulate Matter, Cooking |
Depositing User: | Symplectic Admin |
Date Deposited: | 02 Dec 2019 13:49 |
Last Modified: | 19 Jan 2023 00:17 |
DOI: | 10.1038/s41370-019-0172-z |
Open Access URL: | https://doi.org/10.1038/s41370-019-0172-z |
Related URLs: | |
URI: | https://livrepository.liverpool.ac.uk/id/eprint/3064443 |