|Mobility of Aeroallergens in Home: Effect of Location of Air Sampling and Implication for Evaluation of Patient Exposure|
Julian Gordon1, Paul Detjen, Andrea Wachter & Prasanthi Gandhi1
The Inspirotec sampler permitted the easy testing of multiple locations within a household. Air sampling simultaneously at 12 locations by other technologies would have been technically challenging. These were run by an untrained operator.
|Lutjanus jocu (Dog snapper) as a bio-indicator of emerging contaminants and changes in environmental condition.|
M. Sánchez-García1, S. J. Zottoli2 & L.Roberson-Murillo1
Our research assesses the use of Lutjanus jocu as a bioindicator of changes in environmental condition and water contaminated with toxic substances in estuarine ecosystems.
|Determination of C2-C12 Aldehydes in Water by SPME Arrow On-Fiber Derivatization and GC/MS|
Peter Egli, Beat Schilling, Guenter Boehm, Kai Schueler
A method applying SPME Arrow extraction and on-fiber derivatization for the quantitation of C2-C12 aldehydes in water by GC/MS is described.
|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.
|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.
|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.
|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.
|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.
|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).
|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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