Characterization of indoor air quality and efficiency of air purifier in childcare centers, Korea

Hyeon Ju Oh; In Sick Nam; Hyunjun Yun; Jinman Kim; Jinho Yang; Jong Ryeul Sohn

doi:10.1016/j.buildenv.2014.08.019

Characterization of indoor air quality and efficiency of air purifier in childcare centers, Korea

Hyeon Ju Oh, In Sick Nam, Hyunjun Yun, Jinman Kim, Jinho Yang, Jong Ryeul Sohn

Research output: Contribution to journal › Article › peer-review

96 Citations (Scopus)

Abstract

Particulate matter (PM) samples were collected from inside ten childcare centers, and from their adjacent outdoor environments in Seoul, Korea during the summer, autumn and winter seasons. The concentrations and distribution of microbial size of the airborne bacteria and fungi in bio-aerosols were also investigated. The average indoor concentrations of fine particles less than 2.5 μm (PM_2.5) in the residential areas ranged from 37.1 μg/m³ (±5.8 μg/m³) to 45.2 μg/m³ (±5.3 μg/m³), while indoor PM_2.5 concentrations in centers with roadways nearby ranged from 48.9 μg/m³ (±9.5 μg/m³) to 52.9 μg/m³ (±7.7 μg/m³), and up to 51.1 μg/m³ (±6.4 μg/m³) in residential areas located near construction sites. The concentrations of particulate matter indoor in childcare centers were correlated with the corresponding outdoor locations, in residential areas (R² of 0.64 for PM₁₀ and 0.66 for PM_2.5), near roadways (R² of 0.72 for PM₁₀ and 0.76 for PM_2.5), and near construction areas (R² of 0.45 for PM₁₀ and 0.62 for PM_2.5). The distribution of bio-aerosols showed that 69.4% to 78.1% of the airborne bacteria in the outdoor environments existed in stages 1-3 (over 3.3 μm), while from 59.2% to 78.6% existed in stages 2-4 (2.1-7.0 μm) inside the childcare centers. When the efficiency of air purifiers was compared with the location and characteristics of the indoor of child care centers, the removal efficiency of particulate matter with new data that may characterize indoor air quality.

Original language	English
Pages (from-to)	203-214
Number of pages	12
Journal	Building and Environment
Volume	82
DOIs	https://doi.org/10.1016/j.buildenv.2014.08.019
Publication status	Published - 2014 Aug 23

Bibliographical note

Publisher Copyright:
© 2014 Elsevier Ltd.

Keywords

Air purifier
Bio-aerosol
Childcare center
Correlation coefficient
Particulate matter

ASJC Scopus subject areas

Environmental Engineering
Civil and Structural Engineering
Geography, Planning and Development
Building and Construction

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10.1016/j.buildenv.2014.08.019

Cite this

@article{80bad32eb97e473f943aa81933e348f6,

title = "Characterization of indoor air quality and efficiency of air purifier in childcare centers, Korea",

abstract = "Particulate matter (PM) samples were collected from inside ten childcare centers, and from their adjacent outdoor environments in Seoul, Korea during the summer, autumn and winter seasons. The concentrations and distribution of microbial size of the airborne bacteria and fungi in bio-aerosols were also investigated. The average indoor concentrations of fine particles less than 2.5 μm (PM2.5) in the residential areas ranged from 37.1 μg/m3 (±5.8 μg/m3) to 45.2 μg/m3 (±5.3 μg/m3), while indoor PM2.5 concentrations in centers with roadways nearby ranged from 48.9 μg/m3 (±9.5 μg/m3) to 52.9 μg/m3 (±7.7 μg/m3), and up to 51.1 μg/m3 (±6.4 μg/m3) in residential areas located near construction sites. The concentrations of particulate matter indoor in childcare centers were correlated with the corresponding outdoor locations, in residential areas (R2 of 0.64 for PM10 and 0.66 for PM2.5), near roadways (R2 of 0.72 for PM10 and 0.76 for PM2.5), and near construction areas (R2 of 0.45 for PM10 and 0.62 for PM2.5). The distribution of bio-aerosols showed that 69.4\% to 78.1\% of the airborne bacteria in the outdoor environments existed in stages 1-3 (over 3.3 μm), while from 59.2\% to 78.6\% existed in stages 2-4 (2.1-7.0 μm) inside the childcare centers. When the efficiency of air purifiers was compared with the location and characteristics of the indoor of child care centers, the removal efficiency of particulate matter with new data that may characterize indoor air quality.",

keywords = "Air purifier, Bio-aerosol, Childcare center, Correlation coefficient, Particulate matter",

author = "Oh, \{Hyeon Ju\} and Nam, \{In Sick\} and Hyunjun Yun and Jinman Kim and Jinho Yang and Sohn, \{Jong Ryeul\}",

note = "Publisher Copyright: {\textcopyright} 2014 Elsevier Ltd.",

year = "2014",

month = aug,

day = "23",

doi = "10.1016/j.buildenv.2014.08.019",

language = "English",

volume = "82",

pages = "203--214",

journal = "Building and Environment",

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T1 - Characterization of indoor air quality and efficiency of air purifier in childcare centers, Korea

AU - Oh, Hyeon Ju

AU - Nam, In Sick

AU - Yun, Hyunjun

AU - Kim, Jinman

AU - Yang, Jinho

AU - Sohn, Jong Ryeul

PY - 2014/8/23

Y1 - 2014/8/23

N2 - Particulate matter (PM) samples were collected from inside ten childcare centers, and from their adjacent outdoor environments in Seoul, Korea during the summer, autumn and winter seasons. The concentrations and distribution of microbial size of the airborne bacteria and fungi in bio-aerosols were also investigated. The average indoor concentrations of fine particles less than 2.5 μm (PM2.5) in the residential areas ranged from 37.1 μg/m3 (±5.8 μg/m3) to 45.2 μg/m3 (±5.3 μg/m3), while indoor PM2.5 concentrations in centers with roadways nearby ranged from 48.9 μg/m3 (±9.5 μg/m3) to 52.9 μg/m3 (±7.7 μg/m3), and up to 51.1 μg/m3 (±6.4 μg/m3) in residential areas located near construction sites. The concentrations of particulate matter indoor in childcare centers were correlated with the corresponding outdoor locations, in residential areas (R2 of 0.64 for PM10 and 0.66 for PM2.5), near roadways (R2 of 0.72 for PM10 and 0.76 for PM2.5), and near construction areas (R2 of 0.45 for PM10 and 0.62 for PM2.5). The distribution of bio-aerosols showed that 69.4% to 78.1% of the airborne bacteria in the outdoor environments existed in stages 1-3 (over 3.3 μm), while from 59.2% to 78.6% existed in stages 2-4 (2.1-7.0 μm) inside the childcare centers. When the efficiency of air purifiers was compared with the location and characteristics of the indoor of child care centers, the removal efficiency of particulate matter with new data that may characterize indoor air quality.

AB - Particulate matter (PM) samples were collected from inside ten childcare centers, and from their adjacent outdoor environments in Seoul, Korea during the summer, autumn and winter seasons. The concentrations and distribution of microbial size of the airborne bacteria and fungi in bio-aerosols were also investigated. The average indoor concentrations of fine particles less than 2.5 μm (PM2.5) in the residential areas ranged from 37.1 μg/m3 (±5.8 μg/m3) to 45.2 μg/m3 (±5.3 μg/m3), while indoor PM2.5 concentrations in centers with roadways nearby ranged from 48.9 μg/m3 (±9.5 μg/m3) to 52.9 μg/m3 (±7.7 μg/m3), and up to 51.1 μg/m3 (±6.4 μg/m3) in residential areas located near construction sites. The concentrations of particulate matter indoor in childcare centers were correlated with the corresponding outdoor locations, in residential areas (R2 of 0.64 for PM10 and 0.66 for PM2.5), near roadways (R2 of 0.72 for PM10 and 0.76 for PM2.5), and near construction areas (R2 of 0.45 for PM10 and 0.62 for PM2.5). The distribution of bio-aerosols showed that 69.4% to 78.1% of the airborne bacteria in the outdoor environments existed in stages 1-3 (over 3.3 μm), while from 59.2% to 78.6% existed in stages 2-4 (2.1-7.0 μm) inside the childcare centers. When the efficiency of air purifiers was compared with the location and characteristics of the indoor of child care centers, the removal efficiency of particulate matter with new data that may characterize indoor air quality.

KW - Air purifier

KW - Bio-aerosol

KW - Childcare center

KW - Correlation coefficient

KW - Particulate matter

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U2 - 10.1016/j.buildenv.2014.08.019

DO - 10.1016/j.buildenv.2014.08.019

M3 - Article

AN - SCOPUS:84907154995

SN - 0360-1323

VL - 82

SP - 203

EP - 214

JO - Building and Environment

JF - Building and Environment

ER -

Characterization of indoor air quality and efficiency of air purifier in childcare centers, Korea

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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