Rapid analysis of geosmin and 2-methylisoborneol in water using solid phase micro extraction procedures

Lloyd, Steven W.; Lea, Jeanne M.; Zimba, Paul V.; Grimm, Casey C.

doi:10.1016/s0043-1354(97)00444-2

Cited by 176 publications

(104 citation statements)

References 12 publications

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“…Lloyd et al [7] used 150 mL of sample, with internal standard, purged for 1 hr at 80°C with nitrogen gas at 500 mL/min. Trapped analytes from the carbopack/carbosieve trap were then desorbed by use of 10 mL of hexane.…”

Section: Comparison Of Current Methods With Other Purge-trap Methodsmentioning

confidence: 99%

“…The latter, in combination with mass spectrometric detection, offers excellent sensitivity and selectivity [2]. Other detectors, like flame ionization [7], atomic emission [8], electron-capture [9] and olfactometry [10], have also been reported.…”

Section: Introductionmentioning

confidence: 99%

“…To date, there are comparatively fewer reports on the purge-trap extraction of 2-MIB and GSM [7,[17][18][19]. Salting out of organic compounds by addition of sodium chloride has been used to maximize extraction of organic compounds from water matrices, leading to increased sensitivity.…”

Section: Introductionmentioning

confidence: 99%

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Trace Analysis of Taste-Odor Compounds in Water by Salt-Free Purgeand-Trap Sampling with GC-MS Detection

Manickum¹,

John²

2011

Hydrol Current Res

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Section: Comparison Of Current Methods With Other Purge-trap Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Trace Analysis of Taste-Odor Compounds in Water by Salt-Free Purgeand-Trap Sampling with GC-MS Detection

Manickum¹,

John²

2011

Hydrol Current Res

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“…MIB e geosmina eram extraídos das amostras de água afluente e efluente através da técnica de microextração em fase sólida (SPME), sendo, em seguida, identificadas e quantificadas no GCMS (LLOYD et al, 1998 …”

Section: D) Metodologias Analíticas E Preservação Das Amostrasunclassified

Remoção dos compostos odoríferos geosmina e 2-metilisoborneol de águas de abastecimento através de processos de aeração em cascata, dessorção por ar e nanofiltração

Zat¹,

Benetti

2011

Eng. Sanit. Ambient.

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Atividades humanas aceleram o processo natural de eutrofização das águas, favorecendo a floração de algas e cianobactérias. Estes organismos emitem os compostos 2-metilisoborneol (MIB) e geosmina, que conferem gosto e odor de mofo e terra à água. A presença destes compostos se estende à água potável uma vez que os processos convencionais de tratamento são insuficientes para removê-los. Esta pesquisa foi realizada com o objetivo de avaliar alternativas de processos de tratamento para a remoção de MIB e geosmina da água. Os processos estudados foram aeração em cascata, dessorção por ar e nanofiltração. Os resultados sugerem a possibilidade de remoção quase total de MIB e geosmina da água através do sistema de nanofiltração, enquanto que os processos baseados em aeração e dessorção foram relativamente ineficientes.

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“…Individuals' sensitivity toward odorants has been found to be quite different. For example, the odor threshold concentration (OTC) levels of geosmin and 2-MIB have been reported to range from 4 to 10 ng/L and 9 to 42 ng/L, respectively (Pirbazari et al, 1993;Lloyd et al, 1998;Watson et al, 2000;Worley et al, 2003). At the same time, adaptation due to long-term exposure to a background odor in drinking water could lead to the loss of sensitivity to some odors (Dalton and Wysocki, 1996;Whelton and Dietrich, 2004).…”

Section: Introductionmentioning

confidence: 99%

Quantitative method to determine the regional drinking water odorant regulation goals based on odor sensitivity distribution: Illustrated using 2-MIB

An¹,

Cao²,

Yang³

et al. 2014

Journal of Environmental Sciences

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Taste and odor (T/O) in drinking water often cause consumer complaints and are thus regulated in many countries. However, people in different regions may exhibit different sensitivities toward T/O. This study proposed a method to determine the regional drinking water odorant regulation goals (ORGs) based on the odor sensitivity distribution of the local population. The distribution of odor sensitivity to 2-methylisoborneol (2-MIB) by the local population in Beijing, China was revealed by using a normal distribution function/model to describe the odor complaint response to a 2-MIB episode in 2005, and a 2-MIB concentration of 12.9 ng/L and FPA (flavor profile analysis) intensity of 2.5 was found to be the critical point to cause odor complaints. Thus the Beijing ORG for 2-MIB was determined to be 12.9 ng/L. Based on the assumption that the local FPA panel can represent the local population in terms of sensitivity to odor, and that the critical FPA intensity causing odor complaints was 2.5, this study tried to determine the ORGs for seven other cities of China by performing FPA tests using an FPA panel from the corresponding city. ORG values between 12.9 and 31.6 ng/L were determined, showing that a unified ORG may not be suitable for drinking water odor regulations. This study presents a novel approach for setting drinking water odor regulations.

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Rapid analysis of geosmin and 2-methylisoborneol in water using solid phase micro extraction procedures

Cited by 176 publications

References 12 publications

Trace Analysis of Taste-Odor Compounds in Water by Salt-Free Purgeand-Trap Sampling with GC-MS Detection

Trace Analysis of Taste-Odor Compounds in Water by Salt-Free Purgeand-Trap Sampling with GC-MS Detection

Remoção dos compostos odoríferos geosmina e 2-metilisoborneol de águas de abastecimento através de processos de aeração em cascata, dessorção por ar e nanofiltração

Quantitative method to determine the regional drinking water odorant regulation goals based on odor sensitivity distribution: Illustrated using 2-MIB

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