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Identifying Unknown Chemicals and Disinfection Byproducts in Swimming Pools and Hot Tubs
Jonathan D. Byer, Susan D. Richardson, Eric J. Daiber, Sridevi Anduri Chowdary, Joe Binkley, Jeff Patrick

DBPs were identified in finished water, tap water, swimming pool water, and hot tub water that were not present in the source water. High Resolution Deconvolution was used effectively to identify a greater number of peaks in the chromatogram than by nominal resolution MS.

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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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Showing Results 71 - 80 of 182
Scientific News
Charting Kidney Cancer Metabolism
Changes in cell metabolism are increasingly recognized as an important way tumors develop and progress, yet these changes are hard to measure and interpret. A new tool designed by MSK scientists allows users to identify metabolic changes in kidney cancer tumors that may one day be targets for therapy.
Spotlight on Acoustic Liquid Handling
Journal of Laboratory Automation special issue highlights how acoustic liquid handling enables breakthrough innovations.
Microbes Take Their Vitamins
Scientists exploit organisms' needs in order to track 'vitamin mimics' in bacteria.
Keeping a Specimen's Story Straight
Imagine 96 people standing shoulder to shoulder, not touching and attempting to breathe only the air un-exhaled by the others. Sound impossible?
Portable Kit Can Recover Traces of Chemical Evidence
A chemist at the National Institute of Standards and Technology (NIST) has developed a portable version of his method for recovering trace chemicals such as environmental pollutants and forensic evidence including secret graves and arson fire debris.
Diagnosis of Two Rare Childhood Diseases Improved
For the first time, researchers have developed tests that could improve the diagnosis of two rare childhood diseases known as congenital disorders of glycosylation (CDGs) and metachromatic leukodystrophy, and that could even lead to new treatments for CDGs.
Cleaning Out the Membrane Each Day
Cell membranes are made up of a lipid bilayer that is constantly changing due to the flux of material in and out of the cell.
New Test for Cancer and Diabetes Biomarkers
University of Warwick researchers developed the test to help identify molecules in collagen.
Cooperating Bacteria Isolate Cheaters
Bacteria, which reciprocally exchange amino acids, stabilize their partnership on two-dimensional surfaces and limit the access of non-cooperating bacteria to the exchanged nutrients.
Novel Approach to Understanding Brain Function
Russell Poldrack scanned his brain to create the most detailed map of brain connectivity ever.
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