| A 5-year survey (2007-2011) of enteric viruses in Korean aquatic environments and the use of coliforms as viral indicators |
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학술지명 Microbiology and Immunology
저자 백경희,최돈혁,이규철,김민정,정원화
발표일 2013-01-01
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Three hundred and thirty-nine water samples obtained from 90 locations in Korea from 2007 to 2011were tested for the presence of enteric viruses (EV), total coliforms (TC), and fecal coliforms (FC). A totalculturable virus assay revealed that 89 samples (26.3%) were positive for EVs, the average concentrationbeing 5.8 most probable number (MPN)/100 L. The Han river basin exhibited the highest contaminationby EVs (occurrence, 41.3%; average concentration, 24.0 MPN/100 L). EV contamination was foundmore frequently in river water (occurrence, 33.6%; concentration, 8.4 MPN/100 L) than in lake water orgroundwater. The concentration of EVs was highest in spring (7.7 MPN/100 L), whereas it was foundmost frequently in winter (36.1%). The number of TCs ranged from 0 ? 1.2 × 10^5 colony forming units(CFU)/100 mL and that of FCs from0?6.2×10^3 CFU/100mL per sample. Statistical analyses showed thatthe presence of EVs,TCs and FCs did not correlate significantly with temperatureor turbidity. In addition,presence of TCs and FCs was not significantly correlated with presence of EVs. In conclusion, TCs andFCs may not be accurate microbial indicators of waterborne EVs in Korean aquatic environments. |