期刊
SCIENCE OF THE TOTAL ENVIRONMENT
卷 543, 期 -, 页码 416-424出版社
ELSEVIER
DOI: 10.1016/j.scitotenv.2015.10.163
关键词
Particulate matter; Traffic; Exposure; Mask efficacy; Indonesia; Children's health
资金
- U.S. Department of State through the Institute of International Education [S-ECAAE-10-GR-216(JJ)]
- Northern Illinois University
- City of Makassar
- Research & Artistry Opportunity Grants
- Great Journey Facility Grant
- Great Journey Graduate Assistantship
- College of Health & Human Science Research Grants
- Center for Southeast Asian Studies Travel Grants
- Lillian Cobb Faculty Travel Fellowship
- Institute of the Study for Environment, Sustainability, and Energy Summer Research Grants
Particulate matter (PM) contributes to an increased risk of respiratory and cardiovascular illnesses, cancer, and preterm birth complications. This project assessed PM exposure in Eastern Indonesia's largest city, where air quality has not been comprehensively monitored. We examined the efficacy of wearing masks as an individual intervention effort to reduce in-transit PM exposures. Handheld particulate counters were used to investigate ambient air quality for spatial analysis, as well as the differences in exposure to PM2.5 and PM10 (mu g/m(3)) by different transportation methods [e.g. motorcycle (n = 97), pete-pete (n = 53), and car (n = 55); note: n = 1 means 1 m(3) of air sample]. Mask efficacy to reduce PM exposure was evaluated [e.g. surgical masks (n = 39), bandanas (n = 52), and motorcycle masks (n = 39)]. A Monte Carlo simulation was used to provide a range of uncertainty in exposure assessment. Overall PM10 levels (91 +/- 124 mu g/m(3)) were elevated compared to the World Health Organization (WHO)'s 24-hour air quality guideline (50 mu g/m(3)). While average PM2.5 levels (9 +/- 14 mu g/m(3)) were below the WHO's guideline (25 mu g/m(3)), measurements up to 139 mu g/m(3) were observed. Compared to cars, average motorcycle and pete-pete PM exposures were four and three times higher for PM2.5, and 13 and 10 times higher for PM10, respectively. Only surgical masks were consistent in lowering PM2.5 and PM10 (p < 0.01). Young children (<= 5) were the most vulnerable age group, and could not reach the safe dosage even when wearing surgical masks. Individual interventions can effectively reduce individual PM exposures; however, policy interventions will be needed to improve the overall air quality and create safer transportation. (C) 2015 Elsevier B.V. All rights reserved.
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