Environmental Analysis 31 Concentrating Environmental Samples Prior to Analysis
For environmental laboratories it is of great benefit to concentrate samples prior to analysis to help accurately determine levels of analyte in a given sample.
Genevac's (UK) proprietary SampleGenieTM flask technology has
been developed to help scientists eliminate handling of samples by concentrating samples, without loss of volatile components, directly into a small GC or HPLC vial.
SampleGenie technology enables samples in Genevac ROCKETTM ,
EZ-2 or HT-series centrifugal evaporators to be concentrated directly into a single vial, eliminating the need for reformatting of samples after drying. This, and the automation offered by every Genevac evaporator system helps users
to deliver uniform results every time - increasing productivity in environmental analysis. Reader Reply Card no 116
Agilent Technologies and the National Center for Food Safety and Technology Collaborate to Develop New Food Testing Methods
Agilent Technologies (Asia) and the National Center for Food Safety and Technology (NCFST) announce that they have entered into a collaboration to develop new scientific methods for food testing, with the goal of solving a wide range of persistent problems facing global food supply chains.
As part of the collaboration, Agilent will equip the NCFST lab with an extensive assortment of the latest analytical chemistry and life science instrumentation.
In addition to the instrumentation, scientists from Agilent’s food industry group will provide training and applications support, and service engineers from Agilent’s Chicago office will support the instruments.
"This is an opportunity to positively impact many peoples’ lives by giving researchers better ways of analysing food-
borne illnesses and food quality on a significant scale," said Mike McMullen, president, Agilent Chemical Analysis Group. "We’re putting powerful analytical and biological tools into the hands of some very bright scientists from academia, industry and government, where their combined perspectives should produce creative solutions."
"The state-of-the-art technology provided by Agilent will allow NCFST greater capability to study chemical compounds of critical concern to the global food industry and regulatory authorities," said Jack Cappozzo, director, chemistry, NCFST. "Compounds include melamine; aflatoxins; pesticides; antibiotic residues, such as flunixin and clenbuterol; and Clostridium botulinum toxin.
"This collaborative effort will not only advance analytical solutions that help us better understand and mitigate emerging chemical contaminant issues in food, but also provides us with solid, science-based knowledge to make informed decisions that help ensure a safer, more secure food supply and improve public health."
Reader Reply Card no 117
Why you Should be Concerned about Perfluorinated Compounds?
Many recent news stories have featured perfluorinated compounds, PFOS and PFOA. What exactly are these compounds and why such concern?
Perfluorinated compounds are a group of industrial chemicals that have been used for over 50 years in surface treatments, surfactants, firefighting foams, and many other applications. They are also a critical ingredient in the manufacturing of popular stain prevention products and non-stick pans. PFCs are very stable and persistent compounds which make them very useful in their intended applications, however, these characteristics also make them bio-accumulative should they migrate into the environment.
Recent studies have revealed the presence of these compounds in the blood of arctic polar bears, as well as in the blood of humans in many industrial nations. Additional studies in animals have demonstrated carcinogenic effects. With their wide spread distribution in the environment and an indication of their effect human health
effect, there is greater concern over these particular compounds. PFOS (a sulfonated perfluorinated compound) and PFOA (a carboxylated perfluorinated compound) have been highlighted as the compounds having the largest environmental impact.
Analysing and quantifying these compounds is difficult because of their nearly ubiquitous nature in the laboratory. High background levels have hampered sensitivity and prevented the desired detection limits from being reached. Scientists at Waters Corporation have developed a unique solution to this problem. Using a special instrument configuration with the ACQUITY UPLC®
system, the background interference can be removed from the analysed sample,
leading to much lower detection limits than previously demonstrated. Methods have been developed for water and blood samples that capable of detecting PFOA down to 0.5 ppt and PFOS down to 0.4 ppt, both in less than 10 minutes.
Available in an easy to use PFC Analysis Kit, this analytical solution provides a robust solution to this challenging problem. To learn more, please visit us at
www.waters.com/environment.
A WORLD OF ENVIRONMENTAL SOLUTIONS
WORLD'S LEADING TRADE FAIR FOR WATER, SEWAGE, WASTE AND RAW MATERIALS MANAGEMENT
13 –17 SEPTEMBER 2010, MUNICH
INTERNATIONAL PRODUCTS/SERVICES FOR WATER AND SEWAGE MANAGEMENT
All application fields, all products, all services Technology leaders, specialists and newcomers from around the world
The right solution for every application and every use
First-rate related-events program for information and networking
Extensive range of exhibits for water and sewage management
Detailed information and presentation schedule:
www.ifat.de
ONLINE REGISTRATION FOR VISITORS:
www.ifat.de/tickets/en
www.ifat.de
Web Series an Introduction to Load, Force and Torque
Omega Engineering is producing a new technical reference series of web pages detailing the history, theory and best operating principles of measurement and control fundamentals. Designed as a technical aid for engineers, technicians and students, the first in this series is aimed at force load & torque, and provides details on strain configurations, load cell design, piezoelectric sensors, as well as acceleration and vibration sensors.
Reader Reply Card no 115
NEW PROSPECTS FOR THE ENVIRONMENT
Information: Pattern (Trade Fairs) Ltd. Tel: 020 8940 4625 Fax: 020 8948 1442
info@pattern.co.uk
Reader Reply Card no 118
Reader Reply Card no 119
April/May 2010
AET
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