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Monday, November 24, 2014
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Highly Accurate Measurements of Ochratoxin A (OTA) in Different Foodstuffs
Andreas Breidbach, J. Stroka and F. Ulberth

The European Union-Reference Laboratory for Mycotoxins at the Institute of Reference Materials and Measurements of the Joint Research Centers of the European Commission regularly conducts proficiency tests to assess the measurement capabilities of the National Reference Laboratories of the EU-Member States.

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A Triple Ionization Source for LC/MS
Kaveh Jorabchi, Karl Hanold and Jack Syage

This poster reports the development of a triple ionization source consisting of ESI, APCI and APPI sources. The source uses two probes, one for ESI and a nebulizer/vaporizer for APCI and APPI.

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Dual Dopant Approach for Simultaneous LC-APPI-MS/MS Analysis of Low and High Proton Affinity Pesticides
Sheng-Suan (Victor) Cai, Kaveh Jorabchi and Jack Syage

The objectives of the work detailed in this poster was to explore dual dopant approach to maximizing APPI sensitivity for simultaneous analysis of low and high proton affinity compounds.

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Reversed-Phase Point-of-use Purifier for the Removal of Trace Organics in High Purity Water
Coralie Monferran, Cecilia Devaux, Maricar Tarun, Estelle Riche and Daniel Darbouret

Recent developments of Liquid Chromatography instrumentation, such as UHPLC coupled with mass spectrometry, have increased the separation efficiency and sensitivity. Unfortunately, there are some unwelcome consequences. One of these is the detection of trace contamination in the solvents used to prepare mobile phases. The aim of this work was to design a cartridge which produces high water quality for very sensitive LC-MS applications.

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Fully Automated LC-MS/MS-based Determination of Bosentanand its Metabolites in Dried Blood Spots using the SCAP™ DBS System
Mirko Glinski, Norbert Ganz, Jasper Dingemanse, Laurent Nicolas and Werner Döbelin

Dried Blood Spot (DBS) analysis is a very promising alternative to conventional whole blood and plasma analysis used in drug discovery and development or later in therapeutic drug monitoring with well documented advantages.

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Hyphenated Techniques as Modern Detection Systems in Ion Chromatography
K.M. Ruth, A. Wille, S. Czyborra and J. Kleimann

Historically ion chromatography (IC) using conductivity detection has been successfully used for the analysis of ionic (e.g., anions and cations) and polar substances (e.g., organic acids or sugars). However, due to current toxicity concerns, analyses in complex matrices require improved sensitivities and selectivities.

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Sequence-Specific Ni(II)-Dependent Peptide Bond Hydrolysis for Protein Engineering. Combinatorial Library Determination of Optimal Sequences

The sequence-specific cleavage of the peptide bond is a crucial procedure in protein engineering and purification. The extreme stability of this bond, with half-life for spontaneous hydrolysis estimated as 350-600 years at neutral pH and room temperature, limits the range of appropriate cleavage reagents.

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An improved data processing pipe-line for comprehensive H-NMR and X/MS -omics data
R. J. O. Torgrip, K. M. Åberg, E. Alm

In the post acqusition analysis of comprehensive -omics data the pre-processing pipe-line is crucial to extract the maximum possible amount of information from the data. Here we show a processing pipe-line for (1D)H-NMR and (2D)X/MS data comprising; feature detection, inter-sample feature alignment and internal-standard free normalization that outperforms today’s state-of-the-art processing schemes.

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LC-MS Approaches to Profiling of Non-Radiolabelled Metabolites in Response to Recent Regulatory Changes
Richard Clayton, Caroline Anderson, Brian Morrison and Lindsay Corfield

Following publication of the FDA MIST guidelines and revision of ICH M3, there is increasing interest in obtaining metabolic profiling data at an early stage in the development of a drug. This has led to a requirement to estimate the relative abundance of metabolites in samples prior to the synthesis of the radiolabelled compound and from a wider range of studies.

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Showing Results 51 - 60 of 105
Scientific News
Charge-Tagged Proline-Based Organocatalyst for Mechanistic Studies Using ESI-MS
In a comparative continous flow ESI-MS study, researchers use a new charged catalyst and neutral L-proline to investigate the proline-catalyzed inverse crossed aldol reaction of aldehydes with diethyl ketomalonate.
Could Non-gluten Proteins Play a Role in Celiac Disease?
Scientists are reporting in ACS’ Journal of Proteome Research that people with the disease also have reactions to non-gluten wheat proteins.
Mass Spec Sample Prep Cut From Days to Minutes
The method, developed by Livermore scientists, accommodates liquid samples and bypasses the graphitization process, enabling sample preparation and analysis in minutes.
LLNL, UC Davis Partner to Personalize Cancer Medications
With a $7.8 million, five-year grant from the NIH researchers are utilizing accelerator mass spectrometry for cancer research.
Novel Solutions to Fight the Obesity Gene
Potent inhibitors a potential new class of anti-obesity drugs that target one of the most common genetic causes of obesity.
New Technique Yields Drug, Biomedical Test Results in One Minute
Slug flow microextraction makes it possible to quickly detect the presence of drugs or to monitor certain medical conditions using only a single drop of blood or urine.
Detecting Pharmaceutical and Personal Care Products in Water
A simple, more convenient method than conventional guidelines.
Mass Spectrometry in Your Hand
Electrospray arrays can dramatically downsize systems and costs for onsite chemical analysis and many other applications.
Study Aims to Develop Breath Test for COPD
A new clinical iniative, lead by NYU Langone Medical Center, aims to determine a breath test’s effectiveness to identify volatile organic compounds (VOCs) in human breath that are biomarkers of chronic obstructive pulmonary disease (COPD).
Comparison of Caffeinated and Decaffeinated Coffee - Implications for Alzheimer's Disease
Researchers from the National University of Singapore successfully demonstrated the viability of GC-TOF-MS as an analytical platform for metabolomics analysis of coffee samples.
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