期刊
JOURNAL OF CHROMATOGRAPHY A
卷 1186, 期 1-2, 页码 434-437出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.chroma.2007.12.078
关键词
headspace solid-phase microextraction; 2-methylisoborneol; geosmin; gas chromatography-mass spectrometry; environmental watersamples
A simple and sensitive method for the determination of musty odorants, 2-methylisoborneol (MIB) and geosmin (GSM), in environmental water was developed by headspace solid-phase microextraction (HS-SPME) coupled with gas chromatography-mass spectrometry. MIB and GSM were separated within 10 min using a DB-1 capillary column and detected in the selective ion monitoring mode. HS-SPME using a polydimethylsiloxane/divinyl benzene fiber provided effective sample enrichment, and was carried out by fiber exposition at 70 degrees C for 30 min. Using this method, the calibration curves of MIB and GSM were linear in the range of 0-500 pg/mL, with a correlation coefficient above 0.9977 (n = 24). The detection limits (S/N = 3) of MIB and GSM were 0.9 and 0.6 pg/mL, respectively. This method was successfully applied to the analysis of environmental water samples without interference peaks. (C) 2008 Elsevier B.V. All rights reserved.
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