Simplified method to quantify geosmin and 2-methylisoborneol concentrations in water and microbiological cultures

Johnsen, Peter B.; Kuan, Jui-Chang W.

doi:10.1016/s0021-9673(01)86810-2

Cited by 42 publications

(24 citation statements)

References 6 publications

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“…Pre-concentration of water samples by solvent extraction (SE) can analyze MIB, GSM, ␤-cyclocitral, and ␤-ionone at nanogram-perliter levels [19][20][21][22], however, this technique cannot be employed for the determination of DMS because the boiling point of DMS (37 • C) is lower than that of most common solvents. Closed-loop stripping analysis (CLSA) has been widely used for the extraction of trace amounts of odors from water samples.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous determination of eight common odors in natural water body using automatic purge and trap coupled to gas chromatography with mass spectrometry

Deng

Gao

et al. 2011

Journal of Chromatography A

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Section: Introductionmentioning

confidence: 99%

Simultaneous determination of eight common odors in natural water body using automatic purge and trap coupled to gas chromatography with mass spectrometry

Deng

Gao

et al. 2011

Journal of Chromatography A

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“…Alternative methods for pre-concentration such as liquid-liquid extraction (LLE) have been studied. LLE has been demonstrated to be a simple, rapid and convenient method [13]. The principle of LLE is based on the different solubility of the volatile compound in water phase and a selected organic solvent phase [14].…”

Section: Introductionmentioning

confidence: 99%

Quantitative analysis of trace levels of β-ionone in water by liquid-liquid-phase extraction-gas chromatography-mass spectrometry (LLE-GC-MS)

Gao

Xie

et al. 2015

J. Cent. South Univ.

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A simple and rapid technique based on liquid−liquid extraction coupled to gas chromatography-mass spectrometric detection (LLE-GC-MS) was developed for analysis of taste and odour compound β-ionone in water. Instrument parameters including programmed oven temperature, injection temperature and ion source temperature were evaluated and optimized. Effects of extraction time, ionic strength and pH on the detection efficiency were investigated and optimum conditions were 8 min of extraction time, without NaCl addition at pH=9. Good linearity (R 2 =0.9997) was obtained when the linear range was 10−500 μg/L. The recoveries of β-ionone in ultrapure water and tap water samples were 88%−95% and 110%−114%, respectively. The relative standard deviations (RSD) were less than 10%. The method detection limit (MDL) and rejection quality level (RQL) were achieved at 1.98 μg/L and 6.53 μg/L, respectively. LLE-GC-MS was demonstrated to be a rapid and convenient method for the determination of β-ionone in water samples.

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“…Traditional analytical methods for 2-MIB and GSM include closed-loop stripping [7], liquid-liquid extraction [8], solid-phase extraction [9], steam distillation [10,11], and membrane-based extraction [12]. Purge and trap technique (P&T) has also been reported to be applied in concentrating GSM and 2-MIB [13].…”

Section: Introductionmentioning

confidence: 99%

Simultaneous analysis of five taste and odor compounds in surface water using solid-phase extraction and gas chromatography-mass spectrometry

Sun

Jia²,

Gao

2010

Front. Environ. Sci. Eng.

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In this paper, a method using solid-phase extraction (SPE) and gas chromatography-mass spectrometry (GC-MS) was developed to simultaneously analyze five taste and odor compounds in surface water, i.e., 2-methylisoborneol (2-MIB), 2,4,6-trichloroanisole (TCA), 2-isopropyl-3-methoxy pyrazine (IPMP), 2-isobutyl-3-methoxy pyrazine (IBMP), and trans-1,10-dimethyltrans-9-decalol (geosmin, GSM). The mass spectrometry was operated in selective ion monitoring (SIM) mode. Three kinds of SPE columns and three eluting solvents were compared, the C18 column was chosen as optimum SPE column, and methanol was chosen as the optimum eluting solvent. It was found that the method showed good linearity in the range of 1-200 ng$L -1 and gave detection limits of 0.5-1.5 ng$L -1 for individual compounds. Good recoveries (93.5%-108%) and relative standard deviations (1.58%-7.31%) were also obtained. Additionally, concentrations of these taste and odor compounds in Jinan's surface and drinking water were analyzed by applying this method, and the results showed that GSM and 2-MIB were the dominant taste and odor compounds in Jinan's raw water.

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Simplified method to quantify geosmin and 2-methylisoborneol concentrations in water and microbiological cultures

Cited by 42 publications

References 6 publications

Simultaneous determination of eight common odors in natural water body using automatic purge and trap coupled to gas chromatography with mass spectrometry

Simultaneous determination of eight common odors in natural water body using automatic purge and trap coupled to gas chromatography with mass spectrometry

Quantitative analysis of trace levels of β-ionone in water by liquid-liquid-phase extraction-gas chromatography-mass spectrometry (LLE-GC-MS)

Simultaneous analysis of five taste and odor compounds in surface water using solid-phase extraction and gas chromatography-mass spectrometry

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