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- E-ISSN 2288-8985
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- E-ISSN2288-8985
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Determination of geosmin and 2-MIB in Nakdong River using headspace solid phase microextraction and GC-MS
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2013, v.26 no.5, pp.326-332
https://doi.org/10.5806/AST.2013.26.5.326
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(2013). Determination of geosmin and 2-MIB in Nakdong River using headspace solid phase microextraction and GC-MS. Analytical Science and Technology, 26(5), 326-332, https://doi.org/10.5806/AST.2013.26.5.326
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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 chromatographymass 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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