Sampling Polyhexamethylene Guanidine Aerosols Using Eosin Y-coated Glass Beads
- Authors
- Choi, Sang-Hyun; Park, Seon-Kyung; Kang, Hyun-Joong; Lee, Kyuhong; Kwon, Jung-Hwan
- Issue Date
- 7월-2015
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- Passive samplers; Exposure assessment; Colorimetry; Indoor air
- Citation
- BULLETIN OF THE KOREAN CHEMICAL SOCIETY, v.36, no.7, pp.1819 - 1823
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- BULLETIN OF THE KOREAN CHEMICAL SOCIETY
- Volume
- 36
- Number
- 7
- Start Page
- 1819
- End Page
- 1823
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/93114
- DOI
- 10.1002/bkcs.10345
- ISSN
- 0253-2964
- Abstract
- Fatalities caused by the use of polyhexamethylene guanidine (PHMG), a general-purpose chemical germicide used as a humidifier disinfectant in Korea, have raised concerns about exposure to biocide aerosols in indoor environments. A sampler capable of accumulating PHMG from aqueous aerosols was developed as an alternative to low-volume air samplers. This sampler was prepared by placing glass beads coated with 2-(2,4,5,7-tetrabromo-6-oxido-3-oxo-3H-xanthen-9-yl)benzoate (Eosin Y) in a custom-made plastic holder. Passive sampling rates, measured in a bench-top exposure chamber at two different aqueous PHMG aerosol generation rates, were found to be independent of the experimental conditions. This suggests that the capacity of the sampler to accumulate the PHMG aerosol was sufficient for the sampling duration tested. However, the passive sampling rate was 7.6x10(-6)m(3)/h for the sampler area of 22cm(2). This rate is lower than the typical human breathing rate and inadequate for quantitative instrumental analyses at low concentrations in indoor air. A 30-fold enhancement of the sampling rate was achieved by forced convection using a commercial battery-operated fan at 2000rpm. With this accelerated sampling rate, the sampler could be used to monitor time-integrated concentrations of PHMG aerosols in the air.
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Collections - College of Life Sciences and Biotechnology > Division of Environmental Science and Ecological Engineering > 1. Journal Articles
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