Optimization of conditions in static headspace GC

Penton, Zelda E.

doi:10.1002/jhrc.1240151212

Cited by 31 publications

(17 citation statements)

References 11 publications

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“…The result indicated that the sensitivity of static headspace analysis increased with the rising of temperature of the headspace during 60 to 100 ℃, while it decreased beyond 100 ℃ because of thermal degradation. 20 In addition, careful attention should be paid to optimization of the heating time. The labile volatile components may decompose or be oxidized if the sample is heated overtime.…”

Section: Optimization Of Headspace Conditionsmentioning

confidence: 99%

Comparative Analysis of the Volatile Components in the Fresh Roots and Rhizomes of Curcuma wenyujin by Static Headspace Gas Chromatography Mass Spectrometry

et al. 2006

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Static headspace GC-MS method coupled with H/D exchange was firstly developed to determine and identify the volatile components in the fresh root and rhizome of Curcuma wenyujin. The TIC chromatograms of 3 batches of fresh roots harvested at different time showed significant difference in the volatile components: the constitution was the same but the content of them was different. More than 60 volatile components in fresh roots (Root of C. wenyujin) and rhizomes (Rhizome of C. wenyujin) of C. wenyujin were detected, of which 51 and 48 volatile components were identified respectively. The fresh roots and rhizomes of C. wenyujin were found to have the similar volatile components. The contents of these components were calibrated by the response of β-elemene. In addition, the principal active component, β-elemene, was further confirmed and relatively quantified by its standard. γ-terpinene showed obvious allylic hydrogen/deuterium exchange using deuterium oxide which gave a new method to identify some compounds containing allylic hydrogen. At the same time, the active hydrogen compounds were also further confirmed. The results show that HS-GC-MS method is a fast, simple and efficient way for the analysis of volatile components from medical plants.

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Section: Optimization Of Headspace Conditionsmentioning

confidence: 99%

Comparative Analysis of the Volatile Components in the Fresh Roots and Rhizomes of Curcuma wenyujin by Static Headspace Gas Chromatography Mass Spectrometry

et al. 2006

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“…It can be seen that the recoveries are rather low. In contrast with the well known solid-phase extraction, for which recovery is almost complete [22], such low values are common phenomena in SPME [3,6]. The third column of Table III shows the concentrations of volatile aldehydes measured by headspace SPME analysis of a sunflower oil sample of peroxide value 21 meq kg -1.…”

Section: Quantification Of Aliphatic Aldehydesmentioning

confidence: 94%

“…It is recommended that SPME quantification is performed by comparison with spiked blank matrix or by standard addition [22]. When headspace SPME is used for foods the lipid material markedly reduces the response of the detector and increases the detection limit [23].…”

Section: Quantification Of Aliphatic Aldehydesmentioning

confidence: 99%

Quantitative Analysis of aliphatic aldehydes by headspace SPME sampling and ion-trap GC-MS

1998

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SummaryA fast and simple headspace SPME sampling method has been developed for quantification of volatile aliphatic aldehydes in sunflower oil. Analysis has been performed by gas chromatography, on a 30 m • 0.25 mm i.d. x 0.25 pm CP-Wax 52CB column, with mass spectrometric detection. Carryover from the SPME fiber could be eliminated by heating the fiber in the injection port between runs. Response factors of all the compounds were linear for concentrations up to 100 ng laL -1. The slopes of the calibration curves decrease with the amount of saturation of the aldehydes. The average responses for unsaturated aldehydes were twice as high as those for the saturated variety. Responses for dienes were approximately one order of magnitude higher than for saturated aldehydes. Depletion of the analyte was examined by repeated extraction from the same vial. SPME was optimized -after 30 min extraction most components were found to have reached equilibration. The detection limit for the compounds studied varied between 0.1 and 1 ng laL -1. Distribution constants were determined for ten different aldehydes and Henry's constants were calculated for unsaturated aldehydes. There was a definite relationship between the response factors and the amount of saturation of the aldehydes.

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“…The advantages of this method for analysis of essential oil compounds include saving time, solvent-free, small amounts of samples, low cost, and low detection limit [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Analysis of essential oil compositions ofLavandula angustifoliaby HS-SPME and MAHS-SPME followed by GC and GC-MS

Torabbeigi

Azar

2013

Acta Chromatographica

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Summary. Head space solid phase microextraction (HS-SPME) and microwave-assisted HS-SPME (with polydimetyhylsiloxane [PDMS] fiber) were used for isolation of the volatile contents of Lavandula angustifolia. HS-SPME was done at 70°C for 5 min and microwave-assisted HS-SPME (MA-HS-SPME) was performed in 500 W of microwave power for 5 min. The results of the GC and GC-MS analysis showed that low levels of volatile compounds, which were not found by hydrodistillation, were obtained by SPME methods. The major extracted compounds were the same as hydrodistillation, including 1,8-cineole (41.37% and 54.84%), camphor (15.83% and 23.25%), and borneol (12.32% and 5%) extracted by HS-SPME and MA-HS-SPME, respectively.

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Optimization of conditions in static headspace GC

Cited by 31 publications

References 11 publications

Comparative Analysis of the Volatile Components in the Fresh Roots and Rhizomes of Curcuma wenyujin by Static Headspace Gas Chromatography Mass Spectrometry

Comparative Analysis of the Volatile Components in the Fresh Roots and Rhizomes of Curcuma wenyujin by Static Headspace Gas Chromatography Mass Spectrometry

Quantitative Analysis of aliphatic aldehydes by headspace SPME sampling and ion-trap GC-MS

Analysis of essential oil compositions ofLavandula angustifoliaby HS-SPME and MAHS-SPME followed by GC and GC-MS

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