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Instant Connect Gas Sampling Valve Module Introducing a New Flexibility in Gas Sampling for GC and GCMS
Stefano Pelagatti, Paolo Magni, Fausto Pigozzo

Purpose: We present a newly developed gas sampling valve module for the Thermo Scientific™ TRACE™ 1300 Series Gas Chromatograph (GC).

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GC-MS/MS Analysis of Pesticide Residues in Green Tea Extracted by QuEChERS with Acetonitrile as Final Solvent
Cojocariu C., Morgan P., Silcock P., Pelagatti S., Magni P. and Pigozzo F.

This poster describes the analysis of several challenging pesticides from green tea samples using GC-MS/MS and acetonitrile as final extraction solvent. The compounds analysed are representatives of various classes of pesticides, such as carboxamids, OC, OP, pyrethriods, aromatic, phenylamides.

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Determination of Veterinary Drug Residues in Milk by GC/MS and GC/ECD
Yu Chongtian, Lv Jianxia

Purpose: Develop a rapid, sensitive method for determining amitraz and its metabolites in milk.
Methods: Samples were hydrolyzed in acidic condition and extracted with hexane. After derivativation, the samples were analyzed by GC-ECD or directly by GC-MS.
Results: The results show that GC-MS determination of amitraz and its metabolites is rapid and sensitive.

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General Workflow For Confident Identification of Unknown Compounds in Forensic, Petroleum, Food, Environmental, and Biological Materials: The GC-HRT Advantage
David E. Alonso, Clecio Klitzke, Liz Humston-Fulmer, Jonathan Byer, and Joe Binkley

GC-HRT is an indispensable tool for complex sample analysis.
-Accurate mass measurements can be leveraged to calculate robust chemical formulae
-A workflow that includes complementary EI and CI-HRT analysis results for rigorous compound indentification

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Method Optimization for Comprehensive Characterization of Petroleum with High Resolution Time-of-Flight Mass Spectrometry Platforms
Clecio F. Klitzke, David Alonso, Kevin Siek, Elizabeth Humston-Fulmer, Joe Binkley, Jeff Patrick

These results show the utility of high resolution time-of-flight mass spectrometry with high mass accuracy for comprehensive petroleomic studies. GC-HRT MS is especially useful for adding structural information in the analysis of complex samples like crude oil.

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Crude Oil And Asphaltene Characterization by Pyrolysis Coupled to Gas Chromatography High Resolution Time-of-flight Mass Spectrometry
Clecio F. Klitzke, David Alonso, Joe Binkley, Jeffery Patrick

Py-GC-HRTOFMS analysis with high resolution and high mass accuracy is crucial for identification of crude oil and asphaltene pyrolysis products by unequivocal chemical formula assignment, with enhancement of sensitivity and selectivity. Analysis of petroleum and respective asphaltene fractions from diverse geographical origins are under evaluation as part of future work.

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Beat Schilling1, Reto Bolliger2, Guenter Boehm2

Transesterification of fatty acid esters with Na-methoxide is a fast, efficient and very robust method for fat analysis in food samples. With the use of three ISs the completeness of the transesterification as well as the extent of undesired saponification can be checked.
The PALworkstation allows to fully automate the FAME preparation, including injection into the GC.

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GC-MS Comparison of Lavindin Grosso Oil Obtained by Steam Distillation and SFE
Claudia Worley, Lisa Zona, Susan Sonchik Marine

Oil was extracted from Lavindin Grosso using steam distillation and using supercritical fluid extraction (SFE). Multiple analyses of the same extract demonstrated repeatability of the analytical method. The variability between batches of distillate bracketed the composition obtained by SFE. The differences among the oils could be attributed more to where the lavender was grown than to the extraction method.

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Purification of Synthetic Oligodeoxynucleotides via Catching by Polymerization
Suntara Fueangfung, Shiyue Fang

This poster describes new simple methods for oligodeoxynucleotide purification without chromotography.

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Showing Results 61 - 70 of 146
Scientific News
Metabolomic Platform Reveals Fundamental Flaw in Common Lab Technology
A new study led by scientists at The Scripps Research Institute (TSRI) shows that a technology used in thousands of laboratories, called gas chromatography mass spectrometry (GC-MS), fundamentally alters the samples it analyzes.
New Hope for Personalized Treatment of Eczema
Pharmaceutical researchers at Oregon State University have developed a new approach to treat eczema and other inflammatory skin disorders that would use individual tests and advanced science to create personalized treatments based on each person's lipid deficiencies.
Flowing Electrons Help Ocean Microbes Gulp Methane
Recent work at Caltech has shown that microbes work together to consume large amounts of methane released from vents on the ocean floor by using electrons to share energy over long distances.
Thousands of Protein Interactions Identified
Thanks to the work by Utrecht University researcher Fan Liu and her colleagues, it is now possible to map the interactions between proteins in human cells.
Newly Identified Biochemical Pathway Could Be Target for Insulin Control
Researchers at Duke Medicine and the University of Alberta are reporting the identification of a new biochemical pathway to control insulin secretion from islet beta cells in the pancreas, establishing a potential target for insulin control.
Dirty,Crusty Meals Fit for (Long-Dormant) Microbes
Researchers apply the latest analytical techniques to further our understanding of desert biocrusts.
CSI -- On The Metabolite's Trail
Bioinformaticians at the University of Jena make the most efficient search engine for molecular structures available online.
First Complete Structural Study Of A Pegylated Protein
Significant data obtained at NUI Galway reports first crystal structure of a protein modified with a single PEG chain.
Potential Ovarian Cancer Biomarker Isolated
Researchers from North Carolina State University utilized a highly sensitive mass spectrometry analysis to identify and measure difficult-to-detect N-glycan biomarkers associated with ovarian cancers in stages I – IV.
Waters’ Centers of Innovation Program Honors Ohio State University Laboratory
Wysocki-led facility recognized for proteomics, disease research and mass spectrometry excellence.
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