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http://dx.doi.org/10.5806/AST.2013.26.5.326

Determination of geosmin and 2-MIB in Nakdong River using headspace solid phase microextraction and GC-MS  

Lee, Injung (Nakdong River Environment Research Center, National Institute of Envirnonmental Research)
Lee, Kyoung-Lak (Nakdong River Environment Research Center, National Institute of Envirnonmental Research)
Lim, Tae-Hyo (Nakdong River Environment Research Center, National Institute of Envirnonmental Research)
Park, Jeong-Ja (Nakdong River Environment Research Center, National Institute of Envirnonmental Research)
Cheon, Seuk (Nakdong River Environment Research Center, National Institute of Envirnonmental Research)
Publication Information
Analytical Science and Technology / v.26, no.5, 2013 , pp. 326-332 More about this Journal
Abstract
Geosmin and 2-methylisoborneol (2-MIB) are volatile organic compounds responsible for the majority of unpleasant taste and odor events in drinking water. Geosmin and 2-MIB are byproducts of blue-green algae (cyanobacteria) with musty and earthy odors. These compounds have odor threshold concentration at ng/L levels. It is needed to develop a sensitive method for determination of geosmin and 2-MIB to control the quality of drinking water. In this study, geosmin and 2-MIB in water samples were determined by gas chromatography-mass spectrometry (GC-MS) with headspace-solid phase microextraction (HS-SMPE). The detection limits of this method were 1.072 ng/L and 1.021 ng/L for geosmin and 2-MIB, respectively. Good accuracy and precision was also obtained by this method. Concentrations of the two compounds were measured in raw waters from Nakdong River in the cyanobacterial blooming season. Water bloom formed by cyanobacteria has been occurred currently in Nakdong River. It is needed to investigate the concentrations of geosmin and 2-MIB to control the quality of drinking water from Nakdong River. Both geosmin and 2-MIB were detected in raw waters from Nakdong River at concentrations ranging from 4 to 24 ng/L and 6 to 16 ng/L, respectively.
Keywords
geosmin; 2-MIB; musty and earth odor; Nakdong River; HS-SMPE; GC-MS;
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