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High Definition GC/MS Technology Enables Trace Level Detection of Pesticides in Complex Apple Matrix
Almsco International, a division of Markes International Ltd, announced a new high definition GC/MS method enabling scientists to screen for persistent organic pollutants (POPs) such as pesticides at trace levels in complex apple matrices, without dependence on extensive sample clean-up. The new method, which is one component of Almsco’s extensive food safety offering, is designed to offer optimal sensitivity without comprising speed of analyses and selectivity.
Continuous monitoring of pesticides in food is key in controlling exposure and facilitating regulatory compliance. Traditionally, in food industries and quality control (QC) laboratories samples can be rapidly and quantitatively screened for compliance in fast analytical cycles by using triple quadrupole GC/MS. However, when bringing new MRM methods online or adding more compounds to existing methods, it can be difficult to analyse for new and potentially toxic compounds in complex matrices. High definition GC/MS technology, such as Almsco International’s Bench-top time of flight (TOF) BenchTOF-dx™, has emerged as a powerful and cost-effective technique for selective, sensitive and precise detection of low level pesticides in food samples. The new method developed by Almsco analyses pesticides in a complex apple matrix and enables analysts to screen for both known and unknown compounds at much lower levels with a high degree of definition and clarity. Sample components can be clearly identified, quantified and differentiated from one another, while also retaining the required attributes of speed and selectivity. With modern high definition GC/MS technology, samples can be prepared more quickly and analysed with higher throughput, while also fulfilling regulatory requirements.
In this method, researchers analysed 23 pesticides in a complex apple matrix using the GC/TOF technology. The results show that a BenchTOF-dx platform enables extraction at sub unit mass, substantially reducing matrix effects. When combined with comprehensive GCxGC technology, sub unit mass extraction offers the possibility to further extend the list of analytes that can be screened in a single analysis within a given time. This method enables high performance and productivity pesticide analysis and the sensitivity of the BenchTOF-dx removes the need for extensive sample clean-up. Enhanced productivity is especially beneficial in cases of increased sample demands, for example during a food safety crisis. The launch of this application highlights Almsco’s expertise in food safety testing.
Circle no. 28
MASS SPECTROMETRY & SPECTROSCOPY
New ICP-OES Provides Improved Performance
and Reduced Operating Costs PerkinElmer, Inc recently announced the launch of its Optima™8x00 series of Inductively Coupled Plasma Optical Emission Spectrometers (ICP-OES). The Optima 8x00 ICP-OES platform offers improved performance and reduced operating costs for analysis of environmental, food, pharmaceutical, product safety and geochemical samples. ICP-OES is a highly sensitive, rapid technique for determining the elemental composition of a wide variety of sample types. “Whether the challenge is identifying and quantifying environmental contaminants, or determining the quality of pharmaceuticals and nutraceutical supplements, the new Optima 8x00 series is an ideal solution for today’s laboratories,” said Dusty Tenney, President, Analytical Sciences and Laboratory Services, PerkinElmer. “We are excited to launch the next generation of ICP-OES instruments, which will further improve productivity, sensitivity and cost of ownership to meet the diverse needs of today’s labs, worldwide.”
The Optima 8x00 series is designed for ease of use and exceptional throughput and detection limits, which helps maximise productivity and profitability of testing laboratories. Based on customer needs and real-world applications, the Optima 8x00 series has a number of new features that will enable laboratories to lower their cost per analysis and more easily meet the ever-changing regulatory requirements. New innovative radio frequency (RF) generator technology dramatically reduces argon consumption, thus driving a reduction in the cost of ownership with increased efficiency. A novel electronic sample introduction system provides superior sensitivity that coupled with enhanced stability helps address the ever increasing regulatory demands of the environmental and pharmaceutical markets. Key features of the Optima8x00 platform include: eNeb™ Sample Introduction; Flat Plate™ Plasma Technology; and PlasmaCam™ Viewing Camera. The Optima 8x00 series performance is assured when used with PerkinElmer exclusive glassware, including torches and injectors. The complete portfolio of specialised accessories, supplies and consumables deliver reliable performance, help reduce operating costs and maximise instrument uptime.
Circle no. 29
Quick and Easy, Accurate and Precise Quantitative Elemental Analysis of Hydrocarbons
X-ray fluorescence analysis (XRF) is used in the hydrocarbon processing industry and related branches for trace element determination in all kind of petrochemical materials.
New System for Effortless Ultra High Pressure LC-MS Proteomics Analysis
Thermo Fisher Scientific, Inc announced the launch of a new split-free, nano-flow UHPLC system. The Thermo Scientific EASY-nLC 1000 is the newest addition to the EASY-nLC family of nano-LC products. The EASY-nLC 1000 is unique in its ability to facilitate dedicated separation of biomolecules, such as proteins and peptides, at ultra-high pressures. The instrument is extremely easy to use and can seamlessly integrate with the complete range of Thermo Scientific mass spectrometry (MS) systems for instant, trouble-free
operation. The Thermo Scientific EASY-nLC 1000 uses shorter gradients on 50µm UHPLC columns with 1.9µm beads, delivering superior separation capability with razor-sharp peaks. As a result of its advanced design, the EASY-nLC 1000 facilitates as much as 30% more peptide and protein identifications by providing higher pressure ratings, along with independent and simultaneous variations of bead size and column length. Increasing the number of identifications is a significant achievement for proteomic research and discovery purposes. The EASY-nLC 1000 operates on the Thermo Scientific Xcalibur software platform, easily connecting and interfacing with the full suite of Thermo Scientific LC-MS systems.
The higher operating pressure range of the EASY-nLC 1000 significantly shortens analytical cycles and is designed to increase productivity by accelerating sample loading and column re- equilibrations. Additionally, the split-free, nano-flow capability of the new system provides excellent retention-time reproducibility (below 0.4% RSD), even for very complex samples. The simple integrated configuration is both easy-to-use and robust. “We believe the EASY-nLC 1000 will be a market-leading instrument because it offers UHPLC performance that is dedicated to proteomics scientists,” said Andrew Altman, Vice President and General Manager of liquid chromatography, Thermo Fisher Scientific. “This capability is complemented by exceptional ease of use, rapid operation and better separations in a highly robust instrument. The EASY-nLC 1000 will revolutionise the way LC-MS analyses are performed.”
Circle no. 30
Often a single instrument has to provide full analytical flexibility and performance for all applications in quality and process control, research and development, fulfilling future demands and decreasing limit values for regulated elements. Bruker AXS offers the WDXRF spectrometer S8 TIGER with its innovative, optimised X-ray optics and user interface matching all needs in petrochemical labs.
While the S8 TIGER’s low temperature, high-intensity X-ray tube with protective coating excites the sample even more efficiently, the combination of the tube with the shortest beam path leads to the highest possible element sensitivities.
The versatile beam path and wide selection of different crystals and collimators provide advanced analytical flexibility even for the most demanding applications.
Thanks to SampleCare users in the petro chemistry can rely on the S8 TIGER 100%. SampleCare constantly protects all important system components from contamination, which might lead to incorrect results or in the worst case to system stoppage.
Our S8 TIGER with SampleCare prevents this safely in 4 ways: The DuraBeryllium tube shield protect the head of the X-ray tube; the mask changer and the unique vacuum seal protect the goniometer chamber.
If, by chance anything should have gone wrong during preparation, and the sample breaks or leaks out, it is not a problem. System components are well protected, easy to access and can be cleaned with little effort.
Circle no. 31
INTERNATIONAL LABMATE - AUGUST/SEPTEMBER 2011 - MASS SPECTROMETRY & SPECTROSCOPY
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