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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
High Throughput Mass Spectrometry-Based Screening Assay Trends
Dr John Comley provides an insight into HT MS-based screening with a focus on future user requirements and preferences.
New Method Identifies Up to Twice as Many Proteins and Peptides
An international team of researchers developed a method that identifies up to twice as many proteins and peptides in mass spectrometry data than conventional approaches.
Metabolic Profiles Distinguish Early Stage Ovarian Cancer with Unprecedented Accuracy
Studying blood serum compounds of different molecular weights has led scientists to a set of biomarkers that may enable development of a highly accurate screening test for early-stage ovarian cancer.
Acetaldehyde and Formaldehyde Content in Foods
Korean researchers have determined the content of the toxic and carcinogenic aldehydes, acetaldehyde and formaldehyde, in a variety of food groups.
Combining the Power of Mass Spectrometry & Microscopy
A tool that provides world-class microscopy and spatially resolved chemical analysis shows considerable promise for advancing a number of areas of study, including chemical science, pharmaceutical development and disease progression.
Increasing Vitamin D Supplementation
New study from ETH Zurich finds that elderly women should consume more vitamin D than previously recommended during the winter months.
Advancing Lithium-Ion Battery Research
The increasing number of components in a lithium-ion battery makes it essential to use a variety of analytical methods to attain complete characterization.
Clearest Ever Images of Enzyme that Plays Key Roles in Aging, Cancer
UCLA-led research on telomerase could lead to new strategies for treating disease
Fruit Fly Pheromone Flags Great Real Estate for Starting a Family
Finding could aid efforts to control mosquito-borne diseases like malaria by manipulating odorants
Education and Expense: The Barriers to Mass Spectrometry in Clinical Laboratories?
Here we examine the perceived barriers to mass spec in clinical laboratories and explore the possible drivers behind the recent shift in uptake of the technology in clinical settings.
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