Real-time detection of bacterial bioaerosols using the aerosol fluorescence sensor with dual channels of UV- and Vis-band

Title
Real-time detection of bacterial bioaerosols using the aerosol fluorescence sensor with dual channels of UV- and Vis-band
Authors
정재희이정은황기병배귀남
Keywords
Bioaerosol; Fluorescence; Real-time; Detection
Issue Date
2011-09
Publisher
European Aerosol Conference 2011
Citation
, 616-616
Abstract
In results, the UV-fluorescence intensity of both bacterial bioaerosols was higher than that of PSL at same total particle surface area concentration. In particular, the ratio of UV- to Vis-fluorescence intensity of bacterial bioaerosols showed sufficiently higher values than that of PSL particles, which is able to differentiate between bacterial bioaerosols and PSL particles. This minimum aerosol concentration to which AFS can respond were approximately 100 μ㎡/cm3 (c.f. 30 particles/cm3) at UV fluorescence range and 330 μ㎡/cm3 (c.f. 200 particles/cm3) at Vis fluorescence range in all test particles. In a view point of AFS operation, the variation in characteristics of fluorescence intensity was evaluated under various the sensor gain settings (Low and High) for the two fluorescence channels and the frequency (1- 10 Hz) of the flash excitation light operation. The amplitude of the measured fluorescence offset and dynamic measurement range are dependent on the gain of the system. The coefficient of variance of reading values is increased with decreasing frequency of the flash light.
URI
http://pubs.kist.re.kr/handle/201004/41128
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KIST Publication > Conference Paper
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