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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 di erent methods and to develop a statistical model to convert from CFU to MPN estimates or vice versa. As a result, the significant
di erence 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 di erent analysis methods may result in di erent water quality standard violation frequencies for the same water
sample. 相似文献
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Shin Jaegwan Lee Sang-Ho Kim Sangwon Ochir Duuriimaa Park Yongeun Kim Jihye Lee Yong-Gu Chon Kangmin 《Environmental science and pollution research international》2021,28(30):40623-40632
Environmental Science and Pollution Research - This study examined differences in the adsorption isotherms, kinetic equations, and thermodynamics of Sr2+ by biochar from spent coffee grounds (SCG)... 相似文献
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Factors dominating stratification cycle and seasonal water quality variation in a Korean estuarine reservoir 总被引:4,自引:0,他引:4
Lee YG Kang JH Ki SJ Cha SM Cho KH Lee YS Park Y Lee SW Kim JH 《Journal of environmental monitoring : JEM》2010,12(5):1072-1081
A comprehensive monitoring program was conducted during 2005-2007 to investigate seasonal variations of hydrologic stability and water quality in the Yeongsan Reservoir (YSR), located at the downstream end of the Yeongsan River, Korea. A principal component analysis (PCA) was performed to identify factors dominating the seasonal water quality variation from a large suite of measured data--11 physico-chemical parameters from 48 sampling sites. The results showed that three principal components explained approximately 62% of spatio-seasonal water quality variation, which are related to stratifications, pollutant loadings and resultant eutrophication, and the advective mixing process during the episodic rainfall-runoff events. A comparison was then made between YSR and an upstream freshwater reservoir (Damyang Reservoir, DYR) in the same river basin during an autumn season. It was found that the saline stratification and pollutant input from the upstream contributed to greater concentrations of nutrients and organic matter in YSR compared to DYR. In YSR, saline stratification in combination with thermal stratification was a dominant cause of the longer period (for two consecutive seasons) of hypoxic conditions at the reservoir bottom. The results presented here will help better understand the season- and geography-dependent characteristics of reservoir water quality in Asian Monsoon climate regions such as Korea. 相似文献
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