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Automated Solid-Phase Extraction of Oraganochlorine Pesticides from Drinking Water
Frans Schoustsen and Pranathi R Perati

A new method was developed to automate the capture and elution of Organochlorine pesticides from drinking water. The concentrated analytes were then analyzed by GC with Electron Capture Detection (ECD).

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GC-MS/MS Analysis of Pesticide Residue in Green Tea Extracted by QuEChERS with Acetonitrile as Final Solvent
Cojocariu C., Morgan P., Silcock P., Godula M

QuEChERS involves an initial step when a few grams of the sample are extracted with acetonitrile followed by a clean-up step (with dispersive-SPE) used to remove, to a certain extent, unwanted matrix compound (such as pigments, sugars, organic acids). With QuEChERS, the final extract ends up with the pesticides in acetonitrile, which, being polar solvent, can be
problematic in GC-MS.

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Increasing Extraction Efficiency of Pesticides and Dioxins from Wet Samples Using a Novel Polymer During Accelerated Solvent Extraction
Katerina Bousova, Pranathi Perati, Rahmat Ullah, Kannan Srinivasan

Thermo Scientific™ Dionex™ ASE™ Prep MAP is a proprietary polymer designed to remove moisture and increase extraction efficiencies from wet samples including soils, tissues and food products. This unique formulation allows moisture removal under a variety of ionic strength conditions and accelerated solvent extraction conditions.

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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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Deciphering Regulatory Mechanisms in M. xanthus Using Isotopic Ratio Outlier Analysis (IROA) for Metabolome-wide Quantitation
Daniel Krug 1,2, Carsten Volz 1, Aiko Barsch 3, Chris Beecher 4, Felice de Jong 4, Rolf Müller 1,2

Comprehensive study of regulation in myxobacteria with an untargeted metabolomics setup using Isotopic Ratio Outlier Analysis (IROA) and UHR-Q-TOF

Reliable relative quantitation of known and unknown metabolites from a myxobacterial mutant strain in response to induction of the transcriptional antirepressor taA

Compound identification facilitated by the use of ultra-high resolution MS and the knowledge of the number of carbons in each molecule due to IROA

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Intact Protein LC-MS: How to Overcome the Challenges?
Robert van Ling, Evert-Jan Sneekes, Sebastiaan Dolman, Laurent Rieux, Mauro DePra, Christian Ravnsborg, Dafydd Milton, Remco Swart

Purpose: Facilitate intact protein LC-MS without compromising performance.
Methods: Construct prototypes of integrated column and sprayer dedicated for intact protein separations and compare performance.
Results: Three prototypes have been directly compared and all showed good protein separations, each with their unique area of strength.

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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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Showing Results 31 - 40 of 118
Scientific News
Cells Build 'Cupboards' To Store Metals
Lawrence Livermore researchers have discovered that cells of the alga Chlamydomonas Reinhardti build a “pantry” to store metal and maintain equilibrium.
Non-Gluten Proteins as Targets of Immune Response to Wheat in Celiac Disease
The results were reported online in the Journal of Proteome Research.
Turkeys may be Lifesavers
Antibiotic to target staph infections, strep, comes from good bacteria in turkeys.
Did You Hear The One About The Two Businessmen On A Plane?
EquipNet’s vision ‘to revolutionize the way companies manage their surplus assets’ was first conceived at 30,000 feet somewhere between Chicago and Boston in 1999. Here we learn more about the company's first 15 years.
Proteomics for Systems Toxicology
MS-based proteomics is maturing into a robust technology for the measurement of proteome-wide exposure effects.
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.
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