Correlating 2-MIB and microcystin concentrations with environmental parameters in two reservoirs in south Taiwan

H. Yen, T. Lin, I. Tseng, S. Tung, M. Hsu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)


Cyanobacteria are present in many drinking water reservoirs in Taiwan, and some of them may produce off-flavour compounds and natural toxins. To investigate the correlation among two groups of cyanobacterial metabolites, microcystins and 2-methylisoborneol (2-MIB), and other environmental parameters, approximately 22 water quality and meteorological parameters were monitored for two source waters (Moo-Tan and Tseng-Wen reservoirs) in south Taiwan from August 2003 to April 2005. Monitoring results showed that the two groups of cyanobacterial metabolites were present in the source waters. Concentrations of 2-30 ng/ L of 2-MIB was observed for the two reservoirs, while that of the total concentrations of the five microcystin congeners measured were between 30 and 340 ng/L. The concentration of both 2-MIB and microcystins showed higher concentrations in warmer seasons. A stepwise regression technique was employed to correlate 2-MIB and microcystins concentrations with all the corresponding water quality and meteorological parameters. Correlations among 2-MIB concentration, microcystin concentration, water temperature and air temperature were found in the water samples collected from both reservoirs. The correlations may provide a simple means for the water utility to anticipate the two groups of cyanobacterial metabolites in the two source waters.

Original languageEnglish
Title of host publicationOff-Flavours in the Aquatic Environment VII
EditorsS.B. Watson, B. Brownlee, G. Burlingame, J. Ridal
Number of pages9
Publication statusPublished - 2007

Publication series

NameWater Science and Technology
ISSN (Print)0273-1223

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Water Science and Technology


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