Determination of trace levels of taste and odor compounds in water by microextraction and gas chromatography-ion-trap detection-mass spectrometry

Bao, Meihua; Barbieri, K.; Burrini, D.; Griffini, O.; Pantani, Francesco

doi:10.1016/s0043-1354(96)00338-7

Cited by 45 publications

(28 citation statements)

References 17 publications

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“…Heptanal could produce a fishy/oily odor with an OTC of 3000 ng/L, and 2-nonenal and 2,6-nonadienal could produce a cucumber odor with OTCs of 800 ng/L and 80 ng/L, respectively (Watson, 2004). Decanal, as a fruity/orange-like odorant, has been detected in drinking water (Bao et al, 1997;Suffet et al, 2004). Undecanal and β-ionone have been reported as typical compounds in algal metabolism processes (Friedrich and Acree, 1998;Watson, 2004), while butyl butanoate was reported as an important flavor compound in fruit and wine industries (Welke et al, 2012;Pino and Febles, 2013).…”

Section: Odorant Identification By Combining the Data From Gc-o/ms Anmentioning

confidence: 99%

Identification of complex septic odorants in Huangpu River source water by combining the data from gas chromatography-olfactometry and comprehensive two-dimensional gas chromatography using retention indices

Guo

Yang

Wen

et al. 2016

Science of The Total Environment

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Identification of the trace odorants causing the septic odors in source waters with complex matrixes has long been a big challenge. The Huangpu (HP) River, an important source water for Shanghai, has long been suffering from septic and musty odors, although major odorants have not been identified. In this study, combining the data from gas chromatography-olfactometry with mass spectrometry (GC-O/MS) and comprehensive twodimensional gas chromatography with time-of-flight mass spectrometry (GC × GC-TOFMS) using retention indices (RIs) was used for the identification of odorants in HP source water. Olfactometry peaks detected in water extracts by GC-O/MS were combined with the chromatography peaks detected by GC × GC-TOFMS based on the RIs determined using the retention times (RTs) of alkanes C7-C30. A total of thirteen olfactometry peaks were obtained though GC-O/MS analysis, and potential odorants corresponding to each of the olfactometry peaks were screened based on the odor characteristics and match similarity using GC × GC-TOFMS. Finally, fourteen odorants (one odorant was detected in GC × GC-TOFMS without an olfactometry peak), including three septic odorants (bis(2-chloroisopropyl) ether, diethyl disulfide and dimethyl disulfide) and two musty ones (geosmin and 2-MIB), were confirmed by using authentic standards. The septic and musty odorants in six Contents lists available at ScienceDirectScience of the Total Environment j o u r n a l h o m e p a g e : w w w . e l s e v i e r . c o m / l o c a t e / s c i t o t e n v source water samples taken over a period of six months were quantified. Bis(2-chloroisopropyl) ether, with an odor activity value (OAV) of 1.84-3.2, was found to be a major septic odorant in HP source water, followed by diethyl disulfide (OAV 1.56-1.96) and dimethyl disulfide (OAV 0.37-2.42), while geosmin (OAV 4.37-11.44) was the major musty odorant, followed by 2-MIB (OAV 1.13-1.89). This is the first comprehensive study focusing on the identification of odorants in a complex source water. The integrated approach used in this study could be applied for the identification of odorants in other complex source waters suffering similar odor problems.

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Section: Odorant Identification By Combining the Data From Gc-o/ms Anmentioning

confidence: 99%

Identification of complex septic odorants in Huangpu River source water by combining the data from gas chromatography-olfactometry and comprehensive two-dimensional gas chromatography using retention indices

Guo

Yang

Wen

et al. 2016

Science of The Total Environment

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“…The carbonyl compounds are also widely present in the aqueous environment, even more widely than common VOCs, which concentrations in river waters ranged from 0.04 to 513 mg/L (Chen et al, 2013;Dą browska and Nawrocki, 2013;Takeda et al, 2006). The presence of aldehydes in raw and finished water intended to be used for potable purposes is undesirable since they may cause taste and odor problems (Bao et al, 1997;Dą browska and Nawrocki, 2013). Especially, formation of aldehydes during pre-ozonation process and removal of this class by using coagulation/flocculation and filtration processes in drinking water treatment plants has been also reported (Papageorgiou et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Simultaneous assessments of occurrence, ecological, human health, and organoleptic hazards for 77 VOCs in typical drinking water sources from 5 major river basins, China

Chen

Luo

Wang

et al. 2015

Environmental Pollution

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Ecological risk assessment Human health risk assessment Taste and odor a b s t r a c tOwing to the growing public awareness on the safety and aesthetics in water sources, more attention has been given to the adverse effects of volatile organic compounds (VOCs) on aquatic organisms and human beings. In this study, 77 target VOCs (including 54 common VOCs, 13 carbonyl compounds, and 10 taste and odor compounds) were detected in typical drinking water sources from 5 major river basins (the Yangtze, the Huaihe, the Yellow, the Haihe and the Liaohe River basins) and their occurrences were characterized. The ecological, human health, and olfactory assessments were performed to assess the major hazards in source water. The investigation showed that there existed potential ecological risks (1.30 Â 10 RQ total s 8.99 Â 10) but little human health risks (6.84 Â 10 À7 RQ total s 4.24 Â 10 À4 ) by VOCs, while that odor problems occurred extensively. The priority contaminants in drinking water sources of China were also listed based on the present assessment criteria.

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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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Determination of trace levels of taste and odor compounds in water by microextraction and gas chromatography-ion-trap detection-mass spectrometry

Cited by 45 publications

References 17 publications

Identification of complex septic odorants in Huangpu River source water by combining the data from gas chromatography-olfactometry and comprehensive two-dimensional gas chromatography using retention indices

Identification of complex septic odorants in Huangpu River source water by combining the data from gas chromatography-olfactometry and comprehensive two-dimensional gas chromatography using retention indices

Simultaneous assessments of occurrence, ecological, human health, and organoleptic hazards for 77 VOCs in typical drinking water sources from 5 major river basins, China

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

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