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Inactivation of phage Q beta by 254nm UV light and titanium dioxide photocatalyst

Title
Inactivation of phage Q beta by 254nm UV light and titanium dioxide photocatalyst
Authors
Lee, SNakamura, MOhgaki, S
Ewha Authors
이석헌
Issue Date
1998
Journal Title
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING
ISSN
1093-4529JCR Link
Citation
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING vol. 33, no. 8, pp. 1643 - 1655
Keywords
Q betaphotocatalysisTiO2254 nm UVPCRMPN
Publisher
MARCEL DEKKER INC
Indexed
SCI; SCIE; SCOPUS WOS scopus
Document Type
Article
Abstract
The disinfection efficacy of UV light irradiation at wavelength of 254 nm over a titanium dioxide (TiO2) suspension was compared to that of UV alone. Bacteriophage Q beta was used as a model virus for the study. Q beta in sterilized pure water and TiO2 suspension was irradiated by a 0.4 mW/cm(2) intensity of 254nm UV light. The UV light over TiO2 was more effective than 254nm UV alone in inactivating Q beta. 3.5-log(10) Q beta inactivation was achieved by UV irradiation over TiO2 suspension (10(3) mg/L) after 2 minutes of irradiation, while UV alone inactivated 2-log(10). Using a MPN-PCR method, a ca. 1-log(10)-unit decrease in Q beta RNA concentration was detected after 3 minutes of photocatalytic irradiation. The decrease was explained by damage to nucleic acid of phage Q beta due to radical oxidation, which is generated by photocatalysis.
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엘텍공과대학 > 환경공학전공 > Journal papers
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