Microwave-assisted purge-and-trap extraction device coupled with gas chromatography and mass spectrometry for the determination of five predominant odors in sediment, fish tissues, and algal cells

Deng, Xuwei; Xie, Ping; Qi, Min; Gao, Liang; Ma, Zhimei; Jiang, Yan

doi:10.1016/j.chroma.2011.11.031

Cited by 42 publications

(14 citation statements)

References 43 publications

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“…Based on our previous studies [61], [62], the P&T extraction device coupled with GC-MS was chosen to determine the T&O compound concentrations in the present study. The dissolved T&O compounds in the filtrate of the water samples were directly determined using an Eclipse 4660 Purge-and-Trap Sample Concentrator and a 4551A autosampler (O.I.…”

Section: Methodsmentioning

confidence: 99%

Development of Models for Predicting the Predominant Taste and Odor Compounds in Taihu Lake, China

Sun

Deng

et al. 2012

PLoS ONE

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Taste and odor (T&O) problems, which have adversely affected the quality of water supplied to millions of residents, have repeatedly occurred in Taihu Lake (e.g., a serious odor accident occurred in 2007). Because these accidents are difficult for water resource managers to forecast in a timely manner, there is an urgent need to develop optimum models to predict these T&O problems. For this purpose, various biotic and abiotic environmental parameters were monitored monthly for one year at 30 sites across Taihu Lake. This is the first investigation of this huge lake to sample T&O compounds at the whole-lake level. Certain phytoplankton taxa were important variables in the models; for instance, the concentrations of the particle-bound 2-methylisoborneol (p-MIB) were correlated with the presence of Oscillatoria, whereas those of the p-β-cyclocitral and p-β-ionone were correlated with Microcystis levels. Abiotic factors such as nitrogen (TN, TDN, NO3-N, and NO2-N), pH, DO, COND, COD and Chl-a also contributed significantly to the T&O predictive models. The dissolved (d) T&O compounds were related to both the algal biomass and to certain abiotic environmental factors, whereas the particle-bound (p) T&O compounds were more strongly related to the algal presence. We also tested the validity of these models using an independent data set that was previously collected from Taihu Lake in 2008. In comparing the concentrations of the T&O compounds observed in 2008 with those concentrations predicted from our models, we found that most of the predicted data points fell within the 90% confidence intervals of the observed values. This result supported the validity of these models in the studied system. These models, basing on easily collected environmental data, will be of practical value to the water resource managers of Taihu Lake for evaluating the probability of T&O accidents.

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Section: Methodsmentioning

confidence: 99%

Development of Models for Predicting the Predominant Taste and Odor Compounds in Taihu Lake, China

Sun

Deng

et al. 2012

PLoS ONE

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“…In general, a method for large-scale determination of 2-MIB and GSM in fish samples has been developed through this work. e extraction mechanism, enrichment, and injection mode are different from the previous reported purge and trap method [8,21]. e method allows straightforward liquid extract from fish flesh instead of purge and trap extraction, followed by cleanup with optimized QuEChERS material and further concentration with silica cartridge.…”

Section: Discussionmentioning

confidence: 95%

An Effective and Efficient Sample Preparation Method for 2-Methyl-Isoborneol and Geosmin in Fish and Their Analysis by Gas Chromatography-Mass Spectrometry

Liu

Han

Fodjo

et al. 2021

International Journal of Analytical Chemistry

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The intensive aquaculture strategy and recirculating aquaculture system often lead to the production of off-flavor compounds such as 2-methyl-isoborneol (2-MIB) and Geosmin (GSM). The regular purge and trap extraction followed by analysis with gas chromatography-mass spectrometry (GC-MS) usually involve a complicated assembly of facilities, more working space, long sample preparation time, and headspace solid-phase microextraction (SPME). In this work, a method with easier sample preparation, fewer and simplified facilities, and without SPME on GC-MS analysis is developed for the determination of 2-MIB and GSM in fish samples. Unlike previous methods, solvent extract from samples, QuEChERS-based cleanup, and solid-phase extraction for concentration are applied. The LOD (S/N > 3) and LOQ (S/N > 10) of this method were validated at 0.6 μg/kg and 1.0 μg/kg for both 2-MIB and GSM, which are under the sensory limit (1 μg/kg). Application of this method for incurred fish samples demonstrated acceptable analytical performance. This method is suitable for large-scale determination of 2-MIB and GSM in fish samples, owing to the use of simple facility and easy-to-operate procedure, rapid sample preparation, and shorter time for GC-MS analysis without SPME.

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“…In the search for a sensitive, effective extraction method for the determination of offflavors in different environmental samples, Deng et al [70] developed a rapid, flexible microwave-assisted P&T extraction (MAPTE) device, coupled on-line to GC-MS, for simultaneously determining five predominant odors (dimethyltrisulfide, 2-methylisoborneol, geosmin, β-cyclocitral and β-ionone) in samples of sediment, fish tissue and algal cells. In this easy-to-use extraction/preconcentration device, the rapid heating and large sample throughput provided by microwave-assisted extraction (MAE) is well complemented with the advantages of P&T as a solvent-free technique, with no matrix interferences and with excellent performance for the extraction of odors.…”

Section: Environmental Samples Pandt-gc-ms Methods Have Been Widely Rementioning

confidence: 99%

Volatile sampling by headspace techniques

Soria

García-Sarrió

Sanz

2015

TrAC Trends in Analytical Chemistry

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Microwave-assisted purge-and-trap extraction device coupled with gas chromatography and mass spectrometry for the determination of five predominant odors in sediment, fish tissues, and algal cells

Cited by 42 publications

References 43 publications

Development of Models for Predicting the Predominant Taste and Odor Compounds in Taihu Lake, China

Development of Models for Predicting the Predominant Taste and Odor Compounds in Taihu Lake, China

An Effective and Efficient Sample Preparation Method for 2-Methyl-Isoborneol and Geosmin in Fish and Their Analysis by Gas Chromatography-Mass Spectrometry

Volatile sampling by headspace techniques

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