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Strategic Utilization of Gas Chromatography with Both Nominal and High Resolution Time-of-Flight Mass Spectrometers for Metabolomic Studies
David E. Alonso, Jeff Patrick, and Joe Binkley

The Pegasus series of mass spectrometers are indispensable tools for metabolomics research:
-Throughput
-Discovery
-Confirmation
GC-HRT analyses resulted in confident metabolite identifications:
-Spectral similarity searches
-Formulae for fragment, molecular, and adduct ions

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Post-Target Analysis of Halogenated Flame Retardants Using Mass Defect Plots
Jonathan D. Byer, Grazina Pacepavicius, Mehran Alaee, Karl Jobst, and Joe Binkley

A number of legacy contaminants and other pesticides were identified in the pooled sample. Cl-H mass defect plots are a useful tool for filtering through complex data for the identification of halogenated contaminants. This technique functions as a screening tool for the identification of unknowns, and in the future, may be used as a form of fingerprinting to compare samples.

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Myth Busters: The Truth About Metabolomics and High Resolution Gas Chromatography Time-of-Flight Mass Spectrometry
David E. Alonso, Joe Binkley, and Lorne Fell

The data summarized in this presentation dispels myths associated with the utilization of GC-MS for analytes which are critical for metabolomic studies. GC-HRT provides high quality, accurate mass data for:
-Spectral similarity searches (NIST, Wiley, etc.)
-Formula determination (fragment, molecular & adduct ions)
-GC-HRT is an indispensible tool for the analysis of complex biological samples.

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Automatic Characterization of Lipids Using Charge Remote Fragmentation Ions and Peaks Characteristic of Fatty Acid Fragmentation From MALDI MS/MS Data
Ningombam Sanjib Meitei*(1); Arun Apte(2); Dietmar Waidelich(3); Fadi Abdi(4); Matthias Glueckmann(3)

Automated identification of lipids using CRF ions and high energy MS/MS fragment ions and novel software.

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Automatic Characterization of Lipids Using Charge Remote Fragmentation Ions and Peaks Characteristic of Fatty Acid Fragmentation From MALDI MS/MS Data
Ningombam Sanjib Meitei*(1); Arun Apte(2); Dietmar Waidelich(3); Fadi Abdi(4); Matthias Glueckmann(3)

Automated identification of lipids using CRF ions and high energy MS/MS fragment ions and novel software.

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Non-Target and Post-Target Analysis of Organic Environmental Contaminants in Suspended River Sediments
Jonathan D. Byer, Brad Hill, Joe Binkley

Thermal desorption coupled to GC×GC-TOFMS and GC-HRT were effective tools for enhancing the number of compounds identifiable in suspended sediment without wet chemistry. GC×GC-TOFMS provides high chromatographic resolution for unknown identification with 2D deconvolution and mass spectral library database searching. GC-HRT provides high mass resolution and selectivity for unknown identification with High Resolution Deconvolution™.

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High Performance Time-of-Flight Mass Spectrometry for Comprehensive Petroleum Analysis
Clecio F. Klitzke, David Alonso, Joe Binkley, Jeffery Patrick

High Resolution GC-TOFMS and GC×GC-TOFMS are useful for a non-target comprehensive characterization of petroleum through a petroleomic approach, and can also provide targeted analysis of chemical markers.

High Resolution GC-TOFMS 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.

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Characterization of Metabolites From Medicago truncatula Using Gas Chromatography Mass Spectrometry—Addressing the Knowns and Unknowns Using High Resolution Time-of-Flight
Joe Binkley, David Alonso, Jeff Patrick, David V. Huhman, Feng Qiu, Dennis Fine, and Lloyd W. Sumner

Analyses of the M. truncatula extracts were performed, and data processing focused on qualitative analyses. This provided the opportunity for known analyte verification and unknown identification in a meaningful matrix and the demonstration of the key attributes and benefits of GC-HRT.

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Characterization of Complex Forensic Samples by Gas Chromatography--High Resolution Time-of-Flight Mass Spectrometry
John Rorabeck, David E. Alonso, and Joe Binkley

Proper sample preparation is critical for the analysis of complex samples. GC-HRT provides high quality, accurate mass data for:
-Spectral similarity searches (NIST, Wiley, etc.)
-Formula determination (fragment, molecular, and adduct ions)

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Showing Results 81 - 90 of 192
Scientific News
Getting a Better Look at How HIV Infects and Takes Over its Host Cells
A new approach, developed by a team of researchers led by The Rockefeller University and The Aaron Diamond AIDS Research Center (ADARC), offers an unprecedented view of how a virus infects and appropriates a host cell, step by step.
Detecting Fake Parmesan Cheeses
Scientists report on a way to catch adulteration of the regional artisanal products.
The Need for Speed
Evaluating MALDI-TOF as a high-throughput screening technology for the pharmaceutical industry.
Process Analysis in Real Time
With a real-time mass spectrometer developed by Fraunhofer researchers, it has become possible for the first time to analyze up to 30 components simultaneously from the gas phase and a liquid, including in-situ analysis.
Triple-Negative Breast Cancer Target Is Found
Researchers at UC Berkeley discover a target that drives cancer metabolism in triple-negative breast cancer.
Plasma Biomarkers for Breast Cancer Diagnosis
Plasma lipidomics profiling identified lipid biomarkers in distinguishing early-stage breast cancer from benign lesions.
A Mechanistic Tool for Studying Fungal Pathogens
This study presents an overview of lipid extraction, chromatographic separation and mass spectrometry employed in qualitative and quantitative sphingolipidomics in fungi.
Newborn Screening Test Developed For Rare, Deadly Neurological Disorder
Scientists have developed a new dried blood spot screening test for Niemann-Pick type C, with goal to speed diagnosis and treatment.
HIV Particles Used to Trap Intact Mammalian Protein Complexes
Belgian scientists from VIB and UGent developed Virotrap, a viral particle sorting approach for purifying protein complexes under native conditions.
Altered Metabolism of Four Compounds Drives Glioblastoma Growth
Findings suggest new ways to treat the malignancy, slow its progression and reveal its extent more precisely.
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