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Respiratory tract deposition of inhaled roadside ultrafine refractory particles in a polluted megacity of South-East Asia

Kecorius, Simonas; Madueño, Leizel; Löndahl, Jakob LU ; Vallar, Edgar; Galvez, Maria Cecilia; Idolor, Luisito F.; Gonzaga-Cayetano, Mylene; Müller, Thomas; Birmili, Wolfram and Wiedensohler, Alfred (2019) In Science of the Total Environment 663. p.265-274
Abstract

Recent studies demonstrate that Black Carbon (BC) pollution in economically developing megacities remain higher than the values, which the World Health Organization considers to be safe. Despite the scientific evidence of the degrees of BC exposure, there is still a lack of understanding on how the severe levels of BC pollution affect human health in these regions. We consider information on the respiratory tract deposition dose (DD) of BC to be essential in understanding the link between personal exposure to air pollutants and corresponding health effects. In this work, we combine data on fine and ultrafine refractory particle number concentrations (BC proxy), and activity patterns to derive the respiratory tract deposited amounts of... (More)

Recent studies demonstrate that Black Carbon (BC) pollution in economically developing megacities remain higher than the values, which the World Health Organization considers to be safe. Despite the scientific evidence of the degrees of BC exposure, there is still a lack of understanding on how the severe levels of BC pollution affect human health in these regions. We consider information on the respiratory tract deposition dose (DD) of BC to be essential in understanding the link between personal exposure to air pollutants and corresponding health effects. In this work, we combine data on fine and ultrafine refractory particle number concentrations (BC proxy), and activity patterns to derive the respiratory tract deposited amounts of BC particles for the population of the highly polluted metropolitan area of Manila, Philippines. We calculated the total DD of refractory particles based on three metrics: refractory particle number, surface area, and mass concentrations. The calculated DD of total refractory particle number in Metro Manila was found to be 1.6 to 17 times higher than average values reported from Europe and the U.S. In the case of Manila, ultrafine particles smaller than 100 nm accounted for more than 90% of the total deposited refractory particle dose in terms of particle number. This work is a first attempt to quantitatively evaluate the DD of refractory particles and raise awareness in assessing pollution-related health effects in developing megacities. We demonstrate that the majority of the population may be highly affected by BC pollution, which is known to have negative health outcomes if no actions are taken to mitigate its emission. For the governments of such metropolitan areas, we suggest to revise currently existing environmental legislation, raise public awareness, and to establish supplementary monitoring of black carbon in parallel to already existing PM10 and PM2.5 measures.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Air pollution, Black carbon, Exposure, Lung-particle interaction, Respiratory tract deposition
in
Science of the Total Environment
volume
663
pages
10 pages
publisher
Elsevier
external identifiers
  • scopus:85060750230
ISSN
0048-9697
DOI
10.1016/j.scitotenv.2019.01.338
language
English
LU publication?
yes
id
a1d3829f-2460-4e1f-b06c-00ccc9616e05
date added to LUP
2019-02-11 10:52:47
date last changed
2019-10-15 06:58:25
@article{a1d3829f-2460-4e1f-b06c-00ccc9616e05,
  abstract     = {<p>Recent studies demonstrate that Black Carbon (BC) pollution in economically developing megacities remain higher than the values, which the World Health Organization considers to be safe. Despite the scientific evidence of the degrees of BC exposure, there is still a lack of understanding on how the severe levels of BC pollution affect human health in these regions. We consider information on the respiratory tract deposition dose (DD) of BC to be essential in understanding the link between personal exposure to air pollutants and corresponding health effects. In this work, we combine data on fine and ultrafine refractory particle number concentrations (BC proxy), and activity patterns to derive the respiratory tract deposited amounts of BC particles for the population of the highly polluted metropolitan area of Manila, Philippines. We calculated the total DD of refractory particles based on three metrics: refractory particle number, surface area, and mass concentrations. The calculated DD of total refractory particle number in Metro Manila was found to be 1.6 to 17 times higher than average values reported from Europe and the U.S. In the case of Manila, ultrafine particles smaller than 100 nm accounted for more than 90% of the total deposited refractory particle dose in terms of particle number. This work is a first attempt to quantitatively evaluate the DD of refractory particles and raise awareness in assessing pollution-related health effects in developing megacities. We demonstrate that the majority of the population may be highly affected by BC pollution, which is known to have negative health outcomes if no actions are taken to mitigate its emission. For the governments of such metropolitan areas, we suggest to revise currently existing environmental legislation, raise public awareness, and to establish supplementary monitoring of black carbon in parallel to already existing PM<sub>10</sub> and PM<sub>2.5</sub> measures.</p>},
  author       = {Kecorius, Simonas and Madueño, Leizel and Löndahl, Jakob and Vallar, Edgar and Galvez, Maria Cecilia and Idolor, Luisito F. and Gonzaga-Cayetano, Mylene and Müller, Thomas and Birmili, Wolfram and Wiedensohler, Alfred},
  issn         = {0048-9697},
  keyword      = {Air pollution,Black carbon,Exposure,Lung-particle interaction,Respiratory tract deposition},
  language     = {eng},
  pages        = {265--274},
  publisher    = {Elsevier},
  series       = {Science of the Total Environment},
  title        = {Respiratory tract deposition of inhaled roadside ultrafine refractory particles in a polluted megacity of South-East Asia},
  url          = {http://dx.doi.org/10.1016/j.scitotenv.2019.01.338},
  volume       = {663},
  year         = {2019},
}