title: Determination of musty odorants, 2-methylisoborneol and geosmin, in environmental water by headspace solid-phase microextraction and gas chromatography--mass spectrometry.
abstract: 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/divinylbenzene 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.
authors.affiliation: School of Pharmacy, Shujitsu University, Nishigawara, Okayama 703-8516, Japan.
authors.forename: Keita
authors.initials: K
authors.lastname: Saito
authors.forename: Kota
authors.initials: K
authors.lastname: Okamura
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Kataoka
mesh_terms: D002138:Calibration; D001892:Camphanes / Q000032:analysis*; D004777:Environment; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D009284:Naphthols / Q000032:analysis*; D009812:Odorants / Q000032:analysis*; D012015:Reference Standards; D052617:Solid Phase Microextraction / Q000379:methods*; D012996:Solutions; D013696:Temperature; D013997:Time Factors; D014867:Water / Q000737:chemistry*
chemical_list: D001892:Camphanes; D009284:Naphthols; D012996:Solutions; D014867:Water; C005536:2-methylisoborneol; C001278:geosmin