PM2.5 exposure differences between children and adults

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F22%3A00558872" target="_blank" >RIV/86652079:_____/22:00558872 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S221209552200116X?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S221209552200116X?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.uclim.2022.101198" target="_blank" >10.1016/j.uclim.2022.101198</a>

Jazyk výsledku

angličtina

Název v původním jazyce

PM2.5 exposure differences between children and adults

Popis výsledku v původním jazyce

Heights of children and adults vary substantially and may cause different exposure to PM2.5 particles. We measured pedestrian PM2.5 exposure by foot following a 5.5 km route along kindergartens and schools in Mainz (Germany). Measurements were conducted in November 2019 on eight consecutive days at two heights, the potential breathing heights of adults in 1.6 and children in 1.0 m using Alphasense OPC-N3 low-cost sensors. We found that regardless of height level, persisting calm weather conditions including low wind speeds < 1.0 m/s and lack of precipitation lead to increased PM2.5 exposure exceeding 67.8 mu g/m(3). Comparing the height levels revealed that the children were exposed to > 20% higher concentrations on six days (p < 0.01), on a single day this difference exceeded 80% (24.7 mu g/m(3)). Differences generally increased with increasing PM2.5 concentrations, though the latter are largely independent of the position along the route but varied strongly among days. These findings are supported by a microclimate simulation including traffic exhaust emissions revealing strongest height differences nearby streets with high traffic intensities. Our results demonstrate that children are exposed to considerably higher levels of PM2.5 that are typically not observed in the stationary networks recording aerosols on only one level.

Název v anglickém jazyce

PM2.5 exposure differences between children and adults

Popis výsledku anglicky

Heights of children and adults vary substantially and may cause different exposure to PM2.5 particles. We measured pedestrian PM2.5 exposure by foot following a 5.5 km route along kindergartens and schools in Mainz (Germany). Measurements were conducted in November 2019 on eight consecutive days at two heights, the potential breathing heights of adults in 1.6 and children in 1.0 m using Alphasense OPC-N3 low-cost sensors. We found that regardless of height level, persisting calm weather conditions including low wind speeds < 1.0 m/s and lack of precipitation lead to increased PM2.5 exposure exceeding 67.8 mu g/m(3). Comparing the height levels revealed that the children were exposed to > 20% higher concentrations on six days (p < 0.01), on a single day this difference exceeded 80% (24.7 mu g/m(3)). Differences generally increased with increasing PM2.5 concentrations, though the latter are largely independent of the position along the route but varied strongly among days. These findings are supported by a microclimate simulation including traffic exhaust emissions revealing strongest height differences nearby streets with high traffic intensities. Our results demonstrate that children are exposed to considerably higher levels of PM2.5 that are typically not observed in the stationary networks recording aerosols on only one level.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10511 - Environmental sciences (social aspects to be 5.7)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Urban Climate

ISSN

2212-0955

e-ISSN

2212-0955

Svazek periodika

44

Číslo periodika v rámci svazku

JUL

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

15

Strana od-do

101198

Kód UT WoS článku

000812975700004

EID výsledku v databázi Scopus

2-s2.0-85131429984