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Performance Characteristics of a Comprehensive Two=Dimensional Gas Chromatography-High Resolution Time-of=Flight Mass Spectrometry System (GCxGC=HRTOFMS) Utilizing Chemical Ionization
Jonelle Shiel, Mark Merrick, Scott Pugh, Matthew Soyk, and Viatcheslav Artaev

Combining comprehensive two-dimensional gas chromatography (GC×GC) with a High Resolution Time-of-Flight Mass Spectrometer and Chemical Ionization is a powerful tool for compound identification. Performance of the LECO Pegasus GC-HRT 4D using Chemical Ionization (CI) was demonstrated using Benzophenone and Diesel. GC×GC separation results in narrow peaks, therefore, a high speed detection system is necessary.

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Non-Target Analysis of Electronic Waste Samples from China
Jonathan D. Byer, Ed Sverko, Kurunthachalam Kannan, Qian Wu, Joe Binkley

GC×GC-HRT is a powerful tool for the comprehensive analysis and
chemical characterization of analytes in complex matrices. The combination of high resolution front-end separation with high
resolution time-of-flight mass spectrometry made possible the
identification of compounds previously unknown in these samples.

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Spice Wars- Are You Battle Ready? Analysis of Synthetic Cannabinoids via Gas Chromatography—High Resolution Time-of-Flight Mass Spectrometry
David E. Alonso, John Rorabeck, and Joe Binkley

-EI/CI workflow facilitates confident compound identification.
-GC-HRT and HR-CI source provides high quality, accurate mass data for:
-Database searches (NIST, Wiley, etc.)
-Formula determination (fragment, molecular, and adduct ions)

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A proteomic analysis of p27kip1-binding proteins reveals a putative role in transcription regulation through RNA polymerase II interaction
Juan Triviño Paredes1, Atilla Biçer1, Arnauld Besson2, Edurne Gallastegui1, Josep Maria Estanyol3, Maria Jesus Pujol1 and Oriol Bachs1

A proteomic analysis of p27kip1-binding proteins reveals a putative role in transcription regulation through RNA polymerase II interaction

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Quantitative Analysis Of Pesticides In Quechers Extracts Using UPLC- and APGC- MS/MS
Sara Stead, Simon Hird, Eimear McCall

In this study, we demonstrate sensitive, accurate and repeatable results for the analysis of pesticides in QuEChERS extracts of a selection of
commodities below the regulatory limits.

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TGA/IST16/GC/MS coupling : an advanced technique for LLDPE structure interpretation
Tiffany Marre1 ; Axel Bart1 ; Alain Delauzun1 ; Xavier Cardot1 ; Ronan Cozic1 ; Olivier Boyron2 ; Christophe Boisson2

An innovative TGA/IST16/GC/MS coupling is presented.

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DETERMINATION OF THE QUALITY OF ACTIVE INGREDIENTS IN PAIN KILLERS USING GC-MS
Elizabeth N.M Murago1, Nathan Oyaro1, Anthony N. Gachanja, Onditi O. Anam, Felix M. Mawili, Steve Lancaster

From this study, the pain killers sampled were found to have large error bars suggesting that there exist counterfeit drugs in the market. The brands mostly affected for analysis of acetaminophen were panadol, action, P500, P5500, elymol and neladol. The error bars for caffeine analysis were quite low indicating that all tablets either counterfeit or original maintained the same amount of this active ingredient.

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DETERMINATION OF ESSENTIAL AND HEAVY METALS IN KENYAN HONEY BY ATOMIC ABSORPTION AND EMMISSION SPECTROSCOPY
A. Mbiri, A. Onditi, N. Oyaro

Generally, honey samples recorded very low concentrations of As compared to the other heavy metals determined in this study. The highest concentration of As was recorded in honey sample from Nairobi with a value of 0.03±0.01 ppm. All the values recorded were within the KEBS permitted value of 0.5 ppm in food according to Kenya Bureaue of Standards, 1996.

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Prospecting For Iron and Titanium Using Termitaria
Kinachu James. G, Kiptoo Jackson. K, Onditi Anam.O.

This study demonstrated elevated levels of the two metals (that is iron and titanium) in termitaria soil compared to the surrounding soils. Termitaria are very important bioturbators and can therefore be used as preliminary step in mineral prospecting since they provide an indication of the potential of the positive anomaly, and enables a judgment on the scale of the metal accumulation

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Showing Results 11 - 20 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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