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Minimizing Carry-over for High Throughput Analysis
Christian Berchtold1, Reto Bolliger2, Guenter Boehm2, Götz Schlotterbeck1

Minimal carry-over is a prerequisite for high throughput analysis. However, minimized carry-over and cycle time are competing and a careful optimization is mandatory. In this study the influence of wash conditions on carry-over of various compounds was investigated. A strategy to minimize carry-over was developed. The influences of different wash tasks were investigated. Finally the contribution of different system components such as injector valve or column was studied.

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A Comparison of ITEX Dynamic Headspace–GC/MS to other Enrichment Techniques for Analysis of Flavoring Compounds
Douglas Doster1; Roger Pearson1; Sean Eppel1; Ken Rice1; Tom Flug2; Brian Peat2; Guenter Boehm2

Enrichment techniques are commonly used for the analysis of flavoring compounds in different matrices with GC/MS. Analysis of flavoring compounds is done by purge & trap, SPME or headspace, depending on requirements for sensitivity. The In-Tube Ex¬traction (ITEX) Dynamic Headspace uses a micro trap filled with an adsorbent material to efficiently extract the compounds. Here we evaluate if the ITEX can be used to effectively analyze for these compounds and reduce the analyst’s time involved.

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High Performance Comprehensive Two-Dimensional Gas Chromatography Coupled with a High Resolution Multi-Reflecting TOFMS for Confident Non-Target Analyte Identification
Scott J. Pugh, Viatcheslav Artaev, Mark F. Merrick, Jack Cochran

The use of comprehensive two-dimensional gas chromatography to help increase chromatographic resolution is a major step in tackling the problem of confident peak identification in a complex sample matrix. Combining the separation power of two-dimensional gas chromatography, with resolving power greater than 25,000, and sub ppm mass accuracies of a high resolution multi-reflecting TOFMS is the ideal solution to confident compound identification within a complex sample matrix.

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Development of a Paper-Based Fluidic Device for Phosphorus Detection
Patricia K. Rusch and Kyle A. Cissell

This poster displays the successful beginning stages of an innovative way to detect phosphorus in standing bodies of water by minimizing the quantity of chemicals used, reducing the cost of analysis instrumentation, allowing the potential for real-time monitoring, and producing consistent and reliable results.

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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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Study Of The Active Bacterial Community In Two Membrane Bioreactors
Moreno-Mesonero, L.1, Moreno, Y.1*, Morillo, J.A., Muñagorri, F.2 and Alonso, J.L.1

In this work, bacterial communities from two MBR systems treating leachates were evaluated using the 16S rRNA metagenomics approach, with and without a viability dye (Propidium Monoazide, PMA).

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Rapid Biosensor-Based Detection of Environmental Contamination by Petroleum Hydrocarbons, PAHs and Heavy Metals
Nigel J Silman*, Jeremy G Thomas & Peter Riggs

In this study, we evaluated different freeze-drying excipients to stabilise the biosensor and remove the requirement to store bacteria at -20??C.

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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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Electrical Fusion Machine - New electrical fusion system for x-ray fluorescence analysis
Dr. Rainer Schramm, FLUXANA GmbH & Co. KG; Prof. Marie-Louise Klotz, Hochschule Rhein-Waal, Dr. Myint Myint Sein, Hochschule Rhein-Waal

This poster describes sample preparation in x-ray fluorescence analysis using the Electrical Fusion Machine by FLUXANA.

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Light Weight Evaporation Vessel for the Determination of Dissolved Solids
David Smith

Development of a light weight vessel to be used in gravimetric analyses requiring evaporation of an aqueous matrix.

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Showing Results 1 - 10 of 62
Scientific News
Battery Component Found to Harm Key Soil Microorganism
The material at the heart of the lithium ion batteries that power electric vehicles, laptop computers and smartphones has been shown to impair a key soil bacterium, according to new research.
Living a “Mixotrophic” Lifestyle
Some tiny plankton may have big effect on ocean’s carbon storage.
Living a “Mixotrophic” Lifestyle
Some tiny plankton may have big effect on ocean’s carbon storage.
Toxic Pollutants Found in Fish Across the World's Oceans
Scripps researchers' analysis shows highly variable pollutant concentrations in fish meat.
Global Nitrogen Footprint Mapped
Four countries cause almost half the world’s emissions, with developing countries tending to suffer local pollution caused by foreign demand.
Environmental Toxin May Increase Risk of Alzheimer's
First time scientists have observed brain tangles in an animal model through exposure to environmental toxin.
Global Ocean Warming has Doubled in Recent Decades
Lawrence Livermore scientists, working with National Oceanic and Atmospheric Administration and university colleagues, have found that half of the global ocean heat content increase since 1865 has occurred over the past two decades.
Single Molecule Detection of Contaminants, Explosives or Diseases
A technique that combines the ultrasensitivity of surface-enhanced Raman scattering (SERS) with a slippery surface invented by Penn State researchers will make it feasible to detect single molecules of a number of chemical and biological species from gaseous, liquid or solid samples.
Super-Fine Solution to Sponge Up Micropollutants
A super-fine form of powdered activated carbon captures micropollutants more rapidly than the conventional kind and could by used in Swiss wastewater treatment plants, say EPFL researchers in a new study.
Cleaning Wastewater with Pond Scum
A blob of algae scooped from a fountain on South Street almost two years ago, has seeded a crop of the green stuff that Drexel University researchers claim is more effective at treating wastewater than many of the processes employed in municipal facilities today.
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