OPEN ACCESS

Articles online

Characterization of Indoor-Air Bioaerosols in Southern Taiwan

Category: Articles

Volume: 12 | Issue: 4 | Pages: 651-661
DOI: 10.4209/aaqr.2012.03.0070
PDF | RIS | BibTeX

Yi-Chyun Hsu 1, Pei-Yi Kung2, Ting-Nien Wu1, Yun-Hwei Shen2

  • 1 Department of Environmental Engineering, Kun Shan University, Tainan 71003, Taiwan
  • 2 Department of Resource Engineering, National Cheng Kung University, Tainan 70101, Taiwan

Abstract

This study investigated indoor air quality (IAQ) at 39 public sites in southern Taiwan including hospitals, schools, office buildings, hypermarkets, libraries, railway stations, theaters, etc. Indoor air quality was preliminarily assessed using handy digital apparatus. Items detected include carbon dioxide (CO2), carbon monoxide (CO), formaldehyde (HCHO), total volatile organic compounds (TVOCs), total bacteria counts (TBC), total fungi counts (TFC), PM10, PM2.5, ozone (O3) and temperature. Based on the results of walk-through detection, the spatial distribution of indoor air contaminants was further measured over a 24 hour period using the EPA standard method. Major indoor air pollutants were found to include CO2, TBC, and TFC. The measured CO2 concentrations ranged between 438 and 1527 ppm, and only 38.9% of them met the Taiwan EPA suggested threshold of 600 ppm. In the schools and hospitals (Category 1), the measured TFC and TBC concentrations ranged from 62 to TNTC CFU/m3 and from 196 to 4875 CFU/m3, respectively. 33% TFC and 83% TBC concentrations exceeded the suggested threshold, and CO2 concentrations were moderately correlated with TBC levels. In a case study of hospital bioaerosols, high TBC and TFC levels were effectively lowered through disinfectant housekeeping as well as ClO2 spray. Three filamentous fungus genera were identified as Cladosporium perangustum, Cladosporium tenuissimum, and Fusarium incarnatum from outdoor samples with high TFC concentrations.

Keywords

Indoor air quality Bioaerosol Bacteria Fungi


Related Article

Why Does Rain Increase the Concentrations of Environmental Bioaerosols during Monsoon?

So Mi Kang, Ki Joon Heo, Byung Uk Lee
Volume: 15 | Issue: 6 | Pages: 2320-2324
DOI: 10.4209/aaqr.2014.12.0328
PDF

Investigation of Antimicrobial Activity of Grapefruit Seed Extract and Its Application to Air Filters with Comparison to Propolis and Shiitake

Bangwoo Han , Ji-Soo Kang, Hak-Joon Kim, Chang-Gyu Woo, Yong-Jin Kim
Volume: 15 | Issue: 3 | Pages: 1035-1044
DOI: 10.4209/aaqr.2014.09.0208
PDF

Critical Emissions from the Largest On-Road Transport Network in South Asia

Saroj Kumar Sahu , Gufran Beig, Neha Parkhi
Volume: 14 | Issue: 1 | Pages: 135-144
DOI: 10.4209/aaqr.2013.04.0137
PDF

Ambient Air Quality during Diwali Festival over Kolkata – A Mega-City in India

A. Chatterjee , C. Sarkar, A. Adak, U. Mukherjee, S.K. Ghosh, S. Raha
Volume: 13 | Issue: 3 | Pages: 1133-1144
DOI: 10.4209/aaqr.2012.03.0062
PDF
;