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August/September 2010
New Triple Quadrupole GC/MS/MS Method to Facilitate Highly Selective Trace-level Screening of PCDD/Fs and PCBs
Thermo Fisher Scientific announce a new method for the trace-level screening of polychlorinated dioxins/furans (PCDD/Fs) and polychlorinated biphenyls (PCBs) in food products, following the analytical strategy of the well established U.S. Environmental Protection Agency (EPA) Method 1613A. The newly launched Thermo Scientific TSQ Quantum XLS triple quadrupole gas chromatography tandem mass spectrometry (GC/MS/MS) instrument can reliably analyze PCDD/Fs and PCBs in foodstuff at the maximum residue levels (MRLs). The new method is described in an application note, entitled “PCDD/F Screening at the Maximum Residue Level for Food Safety Analysis using Highly Selective Triple Quadrupole GC/MS/MS,” which is available to download via
www.thermoscientific.com/pcdd
New Literature with HPLC Columns Specifically
for Biochromatography Crawford Scientific is pleased to announce the availability of the new Agilent BioHPLC Catalogue which features overviews of the Agilent HPLC columns especially aimed at the life sciences market. It is a required piece of literature for researchers active in this field.
Featuring applications on a complete range of columns designed for the life science industry, overviews and detailed information is given on Size Exclusion, Ion Exchange and Monoclonal Antibody columns.
Users will be particularly interested in the unique 1.7µm polymeric ion exchange columns which offer improved resolution and reduced analysis times compared to previous columns.
Also featured are applications detailing the benefits of MAb (Monoclonal Antibody) and Cell Lysate analysis on the new and unique 3µm Size Exclusion Columns.
Information may be obtained at
http://www.crawfordscientific.com/
Life_science.html or copies of the catalogue may be obtained directly from Crawford Scientific, Tel 01357 522961
enquiries@crawfordscientific.com
Simplified IC Determination of Transition Metals in Borated Power
Plant Waters Dionex announce a new method for determination of ionic impurities in nuclear power plants that use pressurized water reactors (PWRs). Application Note 250: Determination of Trace Nickel and Zinc in Borated Power Plant Waters Containing Lithium Hydroxide Using Nonsuppressed Conductivity Detection demonstrates how to minimize corrosion and reduce maintenance costs using an ICS ion chromatography system with an IonPac® SCS column and Chromeleon® Chromatography Data System software.
Corrosion is a major contributor to damage in PWRs, so lithium hydroxide is added to the primary water in order to combat the corrosive effects of the boric acid used to control core reactivity. Application Note 250 demonstrates a simplified method that uses cationexchange chromatography to determine trace concentrations of various transition metals. This approach minimizes the expense and time associated with preparation of the 4-(2- pyridylazo)resorcinol (PAR) postcolumn reagent currently used for this analysis.
For more information on Dionex applications and products, visit
www.dionex.com.
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