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Relationships between Water Quality Constituents in the Delta and the Influence of Different Sources of Water
Richard A. Denton and Paul Hutton

Analysis of detailed grab sample data from San Francisco Bay and Delta and development of regression relationships between EC, TDS and water quality constituents such as chloride, bromide, sodium, calcium, sulfate, alkalinity and hardness. The relationships in the interior Delta vary depending upon the percentage contributions from seawater, agricultural drainage and freshwater inflows.

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Microextraction techniques combined with X-ray fluorescence spectrometry for determination of different metal ions in water
Karina Kocot (a), Beata Zawisza (a), Eva Marguí (b), Ignasi Queralt (c), Rafal Sitko (a)

In present work new preconcentration procedures combining microextraction techniques and X-ray fluorescence spectroscopy were developed. Proposed methodologies are promising tools for multielemental analysis enabling detection of natural pollutants in different water samples.

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Effects of aquaculture effluents on nitrogen characteristics in two Chinese estuaries
David Kaiser, Lucia S. Herbeck

The poster describes similarities and differences of the effects aquaculture effluents have on the nitrogen composition in estuarine waters of two sites in southern China

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APPLICATION OF LIQUID CHROMATOGRAPHY WITH UV DETECTION FOR DETERMINATION OF PLANT GROWTH REGULATOR IN COMMON PLANT FERTILIZERS
Borowczyk K., Wyszczelska-Rokiel M., Stachniuk J., Chwatko G., Glowacki R.

1. The methodology allows facile and accurate determination of IBA in common plant fertilizer samples.
2. The analytical figures of linearity, precision and recovery shown during the method validation procedure are well within the criteria for biological sample analysis.
3. In temperature -18, 4 and 25 °C the analyte stays stable for 6 h.
4. The assay should help in control of phytohormones concentration in plants and fertilizers.

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Examination of Pesticide Residues in Wine, Beer and Their Constituent Products Using High-Throughput Techniques to Maximize Extraction & Efficiency
Patricia Atkins, Matt Snyder

In this study, commercial red wine and beer samples were examined for their pesticide concentrations.

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MS Data Processing With Full Flexibility Of Universal Processing Software
Frans Schoutsen, Barbara van Cann, Vincent Jespers, Michal Godula

Liquid Chromatography (LC) in combination with triple quadrupole Mass Spectrometry (MS) is more and more a common analysis technique in routine laboratories. Especially when using MS/MS selected reaction monitoring (SRM) for a large number of components data handling can be a bottle neck. This poster will show MS data processing of pesticides in water samples using an already established chromatography data system which is now also capable of processing large quantities of MS data.

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Automated, Rapid And Reliable Determination Of Dissolved Gases In Water By Static Headspace – Gas Chromatography
A. Caruso, M. Santoro, F. Bedini, P. Magni, S. Pelagatti

Purpose: Exploring the possibility to perform a quantitative determination of dissolved gases in water in a reliable and accurate way. Methods: The quantification of dissolved gases is performed by building a calibration curve spiking blank water samples with increasing quantities of saturated water followed by headspace sampling and GC/ FID analysis. Results: The results show good correlation factors and limit of quantification lower than 10ppb for the four gas analyzed.

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GC-MS Comparison of Lavindin Grosso Oil Obtained by Steam Distillation and SFE
Claudia Worley, Lisa Zona, Susan Sonchik Marine

Oil was extracted from Lavindin Grosso using steam distillation and using supercritical fluid extraction (SFE). Multiple analyses of the same extract demonstrated repeatability of the analytical method. The variability between batches of distillate bracketed the composition obtained by SFE. The differences among the oils could be attributed more to where the lavender was grown than to the extraction method.

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Cloud Point Extraction of Metal Oxide Nanoparticles in Water Samples Identified by Raman Spectroscopy and Quantified by Atomic Absorption Spectroscopy
Yanxiao Ma, Dr. Andrew F. Callender

Nanoparticles that are widely used in commercial products pose a threat to human health and the environment. This project proposes a cheaper and more effective method to identify and quantify metal oxide nanoparticles in water samples.

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Showing Results 11 - 20 of 40
Scientific News
New Test To Revolutionise Disease Detection In People, Crops And Stock
A single-drop DNA test invented by UQ scientists could revolutionise the detection of diseases in humans, livestock and crops.
Tiny Optical Antennas: A Nano Revolution
Newly developed tiny optical antennas, which function like spotlights at the nanoscale, offer the potential to measure food safety, identify air pollutants and even quickly diagnose and treat deadly diseases, like cancer.
New Detector Sniffs Out Origins Of Methane
Instrument identifies methane’s origins in mines, deep-sea vents, and cows.
Water In Smog May Reveal Pollution Sources
Vapor variations in SLC inversions tied to cars, furnaces.
UGA Researchers to Use Crowdsourcing to Track Harmful Algal Blooms
CyanoTRACKER is a ‘Neighborhood watch system for Georgia waters’.
Garden Hose A Breeding Ground For Legionnaires’ Disease
The humble backyard hose could be a bacterial breeding ground, providing the ideal conditions for the organisms that cause Legionnaires’ disease to flourish.
Mineral that Destroys Organic Compounds Identified
Scientists have discovered that the mineral jarosite breaks down organic compounds when it is flash-heated, with implications for Mars research.
Solving Carbon Mysteries of the Deep Ocean
New research from MIT and the Woods Hole Oceanographic Institute reveals a hidden deep-ocean carbon cycle.
Single-Cell, 42-plexed Protein Analysis Achieved with a New Microchip Technology
A novel microdevice capable of detecting 42 unique immune effector proteins has been developed.
Thames Study: Rivers Can Be A Source Antibiotic Resistance
Rivers and streams could be a major source of antibiotic resistance in the environment.
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