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Children's Exposure to Airborne Fine...

Fleming, Brandi Nicole.

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Children's Exposure to Airborne Fine Particulate Matter (PM2.5) Relative to an Adult in the Same Room.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Children's Exposure to Airborne Fine Particulate Matter (PM2.5) Relative to an Adult in the Same Room./
Author:	Fleming, Brandi Nicole.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2024,
Description:	34 p.
Notes:	Source: Masters Abstracts International, Volume: 85-07.
Contained By:	Masters Abstracts International85-07.
Subject:	Environmental health. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30988921
ISBN:	9798381411812

Children's Exposure to Airborne Fine Particulate Matter (PM2.5) Relative to an Adult in the Same Room.
Fleming, Brandi Nicole.

Children's Exposure to Airborne Fine Particulate Matter (PM2.5) Relative to an Adult in the Same Room. - Ann Arbor : ProQuest Dissertations & Theses, 2024 - 34 p.

Source: Masters Abstracts International, Volume: 85-07.

Thesis (M.P.H.)--San Diego State University, 2024.

Recent studies have demonstrated that children are more at risk than adults from airborne fine particulate matter (PM2.5) levels. Since people tend to spend more than 90% of their time indoors, indoor exposures are of particular concern. In the same indoor environment, children will receive a greater dose, pound for pound, than adults due to their higher breathing rate and lower body size. This research investigated whether children experience higher levels than adults due to indoor activity near the floor, which could resuspend toxic house dust. We measured PM2.5 .in the homes of (n=20 caregiver/ child pairs) at two elevations, children's height (0.25 meters) and adult height (1.5 meters), inside the rooms in the homes where the most human activity occurred. Minute-by-minute PM2.5 levels were assessed using low-cost air pollution monitors (Air Quality Egg Version 2) for an average of three consecutive days. The overall median difference between the minute-by-minute PM2.5 levels for child and adult height monitors within each home was +0.7μg /m3 in the child's height monitor, and an elevated value at the child's height was seen for 16/20 homes. The median difference between the minute-by-minute PM2.5 levels for child and adult height monitors when a child was present in the morning compared to when absent showed an increase of +1.4 µg/m3 in child height monitors and an increase in adult height monitors (+1.0 µg/m3 ). The median difference in PM2.5 levels related to air conditioning use showed a decrease in PM2.5 levels, -6.0μg /m3 in child height monitor and -4.7μg /m3 in adult height monitors when air conditioning was used. Fine particle mass concentrations recorded in the children's height monitors were a median of 26% (range, 5-41%) greater than the 75th percentile of the adult value). A median 13% (range, 4-33%) of children's height monitor PM2.5 had values greater than the 90th percentile of the adult value for that home). Our findings indicate that children's exposure and risks from indoor fine particulate matter may be underestimated when assessed using fine particulate matter concentrations obtained from a monitor in the home at adult height.

ISBN: 9798381411812Subjects--Topical Terms:

543032
Environmental health.
Subjects--Index Terms:

Airborne fine particulate matter

Children's Exposure to Airborne Fine Particulate Matter (PM2.5) Relative to an Adult in the Same Room.
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520 $a Recent studies have demonstrated that children are more at risk than adults from airborne fine particulate matter (PM2.5) levels. Since people tend to spend more than 90% of their time indoors, indoor exposures are of particular concern. In the same indoor environment, children will receive a greater dose, pound for pound, than adults due to their higher breathing rate and lower body size. This research investigated whether children experience higher levels than adults due to indoor activity near the floor, which could resuspend toxic house dust. We measured PM2.5 .in the homes of (n=20 caregiver/ child pairs) at two elevations, children's height (0.25 meters) and adult height (1.5 meters), inside the rooms in the homes where the most human activity occurred. Minute-by-minute PM2.5 levels were assessed using low-cost air pollution monitors (Air Quality Egg Version 2) for an average of three consecutive days. The overall median difference between the minute-by-minute PM2.5 levels for child and adult height monitors within each home was +0.7μg /m3 in the child's height monitor, and an elevated value at the child's height was seen for 16/20 homes. The median difference between the minute-by-minute PM2.5 levels for child and adult height monitors when a child was present in the morning compared to when absent showed an increase of +1.4 µg/m3 in child height monitors and an increase in adult height monitors (+1.0 µg/m3 ). The median difference in PM2.5 levels related to air conditioning use showed a decrease in PM2.5 levels, -6.0μg /m3 in child height monitor and -4.7μg /m3 in adult height monitors when air conditioning was used. Fine particle mass concentrations recorded in the children's height monitors were a median of 26% (range, 5-41%) greater than the 75th percentile of the adult value). A median 13% (range, 4-33%) of children's height monitor PM2.5 had values greater than the 90th percentile of the adult value for that home). Our findings indicate that children's exposure and risks from indoor fine particulate matter may be underestimated when assessed using fine particulate matter concentrations obtained from a monitor in the home at adult height.
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