The determination of geosmin and 2-methylisoborneol in water using isotope dilution high resolution mass spectrometry

Palmentier, J-P.F.P.; Taguchi, Vince Y.; Jenkins, S. W. D.; Wang, David T.; Ngo, Kim-Phuong; Robinson, D.W.

doi:10.1016/s0043-1354(97)00280-7

Cited by 30 publications

(13 citation statements)

References 24 publications

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“…refrigerated; dark), however the alkene compounds are less robust (Palmentier et al, 1998;Satchwill, 2001). The alkene AVOCs are produced by the enzymatic breakdown of cellular PUFAs, which are in turn susceptible to further oxidation.…”

Section: Evaluation Of Storage Conditions On Sample Stabilitymentioning

confidence: 99%

Odourous algal-derived alkenes: differences in stability and treatment responses in drinking water

Satchwill

Watson

Dixon

2007

Water Science and Technology

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Drinking water supplies are often impacted by taste and odour (T/O) episodes caused by algal volatile organic compounds (AVOCs) from algal blooms. Treatment and control of these events is important to utility operators, as customer confidence in the safety of public drinking water supplies is based primarily on their palatability and odour. To manage T/O outbreaks successfully, knowledge about treatment responses of AVOCs and anticipation of their outbreaks are thus of major importance to the water industry. The Glenmore Reservoir and water treatment plant (GWTP) supplies drinking water to over 50% of the ca. 1 million consumers in Calgary (Alberta). Despite low nutrients and high raw water quality, the reservoir experiences periodic outbreaks of fishy/floral T/O, caused by chrysophytes and diatoms (Uroglena americana, Dinobryon spp., Synura petersenii, Asterionella formosa). These odours are produced by the unsaturated C7-C10 alkenes 2,4-heptadienal, 2,4,7-octatriene, 2,4-decadienal and 2,4,7-decatrienal, generated during from the enzymatic breakdown of algal polyunsaturated fatty acids (PUFAs). The formation, persistence and stability of these compounds in both the raw water and treatment plant is not well understood.

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Section: Evaluation Of Storage Conditions On Sample Stabilitymentioning

confidence: 99%

Odourous algal-derived alkenes: differences in stability and treatment responses in drinking water

Satchwill

Watson

Dixon

2007

Water Science and Technology

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“…The MOE method (Palmentier et al, 1998) employs addition of the internal standards (deuterated analogs (d 3 ) of geosmin and MIB) to a 1-L sample upon arrival at the laboratory. The original sample is split into two 500 ml aliquots before addition of Ambersorb 572 resin to each.…”

Section: Methodsmentioning

confidence: 99%

Interlaboratory comparison of geosmin and 2-methylisoborneol in municipal tap water

Brownlee

Märvin²,

MacInnis³

et al. 2007

Water Science and Technology

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An interlaboratory comparison ("round-robin") for geosmin and 2-methylisoborneol (MIB) was carried out between six laboratories of the Ontario Water Works Research Consortium (OWWRC). Municipal tap water was found to be a suitable medium for distribution of samples. To test stability, geosmin and MIB were added to tap water and stored at 2-48C. Under these conditions, geosmin concentrations declined by approximately 5% per month for the first 2 months. MIB concentrations were stable over a 158-day period. Three round-robins were carried out individually in 2001, 2003 and 2004. Two levels of geosmin and MIB were used: nominally 10 and 100 ng/l. In 2003 the relative standard deviation for all six participating laboratories were 34, 21, 21 and 22% for low and high level MIB, and low and high level geosmin, respectively. For all but MIB at the low level, there was a marked improvement in agreement between laboratories from 2001 to 2004. However, we recommend use of common analytical standards in order to potentially further reduce interlaboratory variability.

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“…However, in both LLE and SPE, organic solvents are used and multiple operational steps are needed. These procedures can be time consuming, resulting in low sample throughput, and may require expensive high-resolution mass spectrometers to provide detection at ng/L concentrations (Palmentier et al, 1998). Solid-phase microextraction (SPME), a relatively new technique developed by Pawliszyn and co-workers (Arthur and Pawliszyn, 1990;Arthur et al, 1992), has eliminated most of the drawbacks in the preparation of an aqueous samples for geosmin and 2-MIB analysis.…”

Section: Cyanobacteria Toxinsmentioning

confidence: 99%

Quantitative analysis of earthy and musty odors in drinking water sources impacted by wastewater and algal derived contaminants

Duirk

2013

Chemosphere

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The goal of this study was to develop a robust method capable of quantifying taste and odor compounds (i.e., geosmin and 2-methylisoborneol) at very low aqueous concentrations in the presence of wastewater and algal derived contaminants. A polydimethylsiloxane/divinylbenzene (PDMS/DVB) fiber was used to perform headspace-solid phase microextraction (HS-SPME) to extract and analyze taste and odor compounds from model, source water, and finished drinking water samples. Gas chromatography coupled with mass spectrometery (GC/MS) in full scan mode was used to analyze the compounds desorbed from the fiber in the GC inlet. The following parameters were optimized in order to enhance analyte recovery: extraction temperature, extraction time, desorption time, sonication temperature, sonication time and GC/MS configuration/temperature program. After optimization, the method provided a linear response from 1 to 300 ng L(-1) and yielded limit of detections (LODs) of 1 ng L(-1) for both 2-MIB and geosmin. In MS full scan mode, wastewater contaminants and other algal derived volatile organic compounds (ADVOCs) relevant to cyanobacterial bloom dynamics were detected and monitored in real source water samples. In the presence of known interferents with similar mass/charge fragments and elution times, the optimized method yielded low detection limits as well as exact molecular confirmation for taste and odor compounds in impacted source water samples. This method could be used as a tool to aid in the development of source water protection plans by identifying potential sources of anthropogenic and algal derived contamination in drinking water sources.

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The determination of geosmin and 2-methylisoborneol in water using isotope dilution high resolution mass spectrometry

Cited by 30 publications

References 24 publications

Odourous algal-derived alkenes: differences in stability and treatment responses in drinking water

Odourous algal-derived alkenes: differences in stability and treatment responses in drinking water

Interlaboratory comparison of geosmin and 2-methylisoborneol in municipal tap water

Quantitative analysis of earthy and musty odors in drinking water sources impacted by wastewater and algal derived contaminants

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