scholarly journals Solid-phase Microextraction (SPME) with Stable Isotope Calibration for Measuring Bioavailability of Hydrophobic Organic Contaminants

2013 ◽  
Vol 47 (17) ◽  
pp. 9833-9840 ◽  
Author(s):  
Xinyi Cui ◽  
Lianjun Bao ◽  
Jay Gan
Keyword(s):  
Stable Isotope ◽  
Organic Contaminants ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Hydrophobic Organic Contaminants

In vivo sampling of environmental organic contaminants in fish by solid-phase microextraction

2012 ◽  
Vol 32 ◽  
pp. 31-39 ◽  
Author(s):  
Xu Zhang ◽  
Ken D. Oakes ◽  
Shuang Wang ◽  
Mark R. Servos ◽  
Shufen Cui ◽  
...  
Keyword(s):  
Organic Contaminants ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
In Vivo Sampling

A sensitive method to determine melatonin in saliva by automated online in-tube solid-phase microextraction coupled with stable isotope-dilution liquid chromatography-tandem mass spectrometry

2017 ◽  
Vol 9 (21) ◽  
pp. 3134-3140 ◽  
Author(s):  
Atsushi Ishizaki ◽  
Akiko Uemura ◽  
Hiroyuki Kataoka
Keyword(s):  
Mass Spectrometry ◽  
Liquid Chromatography ◽  
Stable Isotope ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Tandem Mass ◽  
Stable Isotope Dilution ◽  
Chromatography Tandem Mass Spectrometry ◽  
Liquid Chromatography Tandem Mass ◽  
Sensitive Method

Melatonin (MLT) plays important roles in regulating the sleep-wake cycle, and has many beneficial effects on health. A simple, rapid, and sensitive method was developed for the determination of MLT in human saliva by automated online in-tube solid-phase microextraction coupled with stable isotope-dilution liquid chromatography-tandem mass spectrometry.

Immersed solid phase microextraction to measure chemical activity of lipophilic organic contaminants in fatty tissue samples

Chemosphere ◽  
2008 ◽  
Vol 71 (8) ◽  
pp. 1502-1510 ◽  
Author(s):  
Lia Ossiander ◽  
Fredrik Reichenberg ◽  
Michael S. McLachlan ◽  
Philipp Mayer
Keyword(s):  
Organic Contaminants ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Chemical Activity ◽  
Fatty Tissue ◽  
Tissue Samples

scholarly journals The Pear Aroma in the Austrian Pinot Blanc Wine Variety: Evaluation by Means of Sensorial-Analytical-Typograms with regard to Vintage, Wine Styles, and Origin of Wines

2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
Christian Philipp ◽  
Phillip Eder ◽  
Walter Brandes ◽  
Elsa Patzl-Fischerleitner ◽  
Reinhard Eder
Keyword(s):  
Gas Chromatography ◽  
Stable Isotope ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Stable Isotope Dilution ◽  
Isotope Dilution Assay ◽  
Dilution Assay ◽  
Consumer Study ◽  
Gas Chromatography Mass Spectroscopy ◽  
Chain Ester

The perceived pear aroma in wines was associated with various short- and medium-chain ester compounds. A consumer study confirmed this assumption. In total, eight ester compounds from a series of 100 aromatic substances were associated with the pear aroma. In this study, a valid stable isotope dilution assay headspace solid-phase microextraction gas chromatography mass spectroscopy (SIDA-HS-SPME-GC-MS) method was developed for the analysis of these compounds, and 102 Austrian Pinot blanc wines of vintages 2013–2016 were analysed. They were assessed with regard to vintage and origin influences as well as wine styles. However, an attempt was made to capture the synergies of these compounds for the pear aroma. With the detection of ethyl (E,Z)-2,4-decadienoate and methyl (E)-geranoate, two volatile compounds were measured which had not previously been detected in Austrian wines. The eight analysed esters were perceived very differently. Therefore, specific odour activity values for the various sensations could be calculated with a mathematical combination of the analyses and the results of the sensory studies. A vintage influence on the sensorial descriptor “overripe pear” and a relationship between wine style and total pear aroma were determined.

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