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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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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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Showing Results 81 - 90 of 196
Scientific News
Spotting Falsified, Degraded Medications
A team of researchers has developed a simple, inexpensive paper-based device to screen suspicious medications.
Comparing Fungal Secretions
Their unassuming appearances may cause them to be overshadowed by the plants or animals in their natural habitats, but fungi play key roles in maintaining their ecosystems.
Ginger Nanoparticles Heal Bowel Disease
Lab team spins ginger into nanoparticles to heal inflammatory bowel disease.
How Cloud Connectivity Can Combat the Reproducibility Crisis
This infographic explains the reproducibility crisis, and how cloud connectivity can help overcome this problem.
Method To Study Critical HIV Protein Developed
Researchers at Sandia National Laboratories and Northeastern University have developed a new technique to study how a critical HIV protein changes shape.
Mitochondrial Maps Reveal New Connections to Poorly Understood Diseases
Mitochondria are the engines that drive cellular life, but these complex machines are vulnerable to a wide range of breakdowns, and hundreds of their component parts remain a functional mystery.
JPK NanoWizard® Applied to a Wide Range of Research
The NanoWizard® AFM from JPK is applied for interdisciplinary research at the University of South Australia for applications including smart wound healing and how plants can protect themselves from toxins.
New Centre Offers Ultra-Speed Protein Analysis
UW-Madison researchers to establish development centre for next-gen protein measurement technologies.
Determination of 13 Organic Toxicants in Human Blood
Researchers have utilised liquid-liquid extraction coupling HPLC-MS/MS to identify and quantify organic toxicants in human blood.
Accessing Metabolic Information with Mass Spec
Scientists at the Helmholtz Zentrum München have developed a new mass spectrometry imaging method which, for the first time, makes it possible to analyze hundreds of metabolites in fixed tissue samples.
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