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Evaluation of the relationship between two different methods for enumeration fecal indicator bacteria: colony-forming unit and most probable number
- Source :
- Journal of environmental sciences (China). 22(6)
- Publication Year :
- 2010
-
Abstract
- Most probable number (MPN) and colony-forming unit (CFU) estimates of fecal indicator bacteria (FIB) concentration are common measures of water quality in aquatic environments. Thus, FIB intensively monitored in Yeongsan Watershed in an attempt to compare two different methods and to develop a statistical model to convert from CFU to MPN estimates or vice versa. As a result, the significant difference was found in the MPN and CFU estimates. The enumerated Escherichia coli concentrations in MPN are greater than those in CFU, except for the measurement in winter. Especially in fall, E. coli concentrations in MPN are one order of magnitude greater than that in CFU. Contrarily, enterococci bacteria in MPN are lower than those in CFU. However, in general, a strongly positive relationship are found between MPN and CFU estimates. Therefore, the statistical models were developed, and showed the reasonable converting FIB concentrations from CFU estimates to MPN estimates. We expect this study will provide preliminary information towards future research on whether different analysis methods may result in different water quality standard violation frequencies for the same water sample.
- Subjects :
- Veterinary medicine
Environmental Engineering
Colony Count, Microbial
Indicator bacteria
Biology
Microbiology
Feces
Rivers
Most probable number
Enumeration
Escherichia coli
Water Movements
Environmental Chemistry
Animals
General Environmental Science
Colony-forming unit
food and beverages
General Medicine
Coliform bacteria
Fecal coliform
Linear Models
Water quality
Seasons
Water Microbiology
Enterococcus
Subjects
Details
- ISSN :
- 10010742
- Volume :
- 22
- Issue :
- 6
- Database :
- OpenAIRE
- Journal :
- Journal of environmental sciences (China)
- Accession number :
- edsair.doi.dedup.....b5d431673de8bd6354255f90bef3a1f2