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Thermo Fisher Scientific Announces New UHPLC/MS Method for Sensitive, Precise and Reproducible Trace - Thermo Fisher Scientific announces new UHPLC/MS method for sensitive, precise and reproducible trace-level analysis of perfluorinated compounds in human breast milk
Thermo Fisher Scientific Announces New UHPLC/MS Method for Sensitive, Precise and Reproducible Trace

 

NewswireToday - /newswire/ - San José, CA, United States, 2010/08/27 - Thermo Fisher Scientific announces new UHPLC/MS method for sensitive, precise and reproducible trace-level analysis of perfluorinated compounds in human breast milk.

   
 
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Thermo Fisher Scientific, Inc., the world leader in serving science, has developed a new method for sensitive, accurate and reproducible quantitation of low levels of perfluorinated compounds (PFCs) in human breast milk. Using selected reaction monitoring (SRM) and highly selective reaction monitoring (H-SRM) on an integrated ultra high performance liquid chromatography mass spectrometry (UHPLC/MS) platform enables reliable and robust detection of PFCs at ppt concentrations in human breast milk. The new method is detailed in an application note, entitled “Sensitive and Accurate Quantitation of Perfluorinated Compounds in Human Breast Milk using Selected Reaction Monitoring Assays by LC/MS/MS,” which is available to download.

PFCs have been widely used in diverse industrial applications as well as consumer products for more than fifty years. Many of these synthetic compounds become environmental pollutants as they are resistant to degradation and laboratory studies have linked some PFCs to developmental, reproductive and systemic toxicity. In response, efforts have been made to regulate PFCs and identify a dependable method for trace-level analysis of these hazardous compounds in order to determine exposure pathways and health outcomes. Liquid chromatography tandem mass spectrometry (LC/MS/MS) has long been the method of choice for the analysis of PFCs, but quantitation accuracy is often jeopardized due to background PFC contamination and matrix interferences. UHPLC/MS is a powerful alternative for monitoring low levels of PFCs in a range of human matrices, delivering exceptionally sensitive, selective, precise and reproducible measurements.

Many PFCs are detectable in human serum and breast milk and have been found in the blood of newborns possibly through lactational transfer from mothers. By coupling the Thermo Scientific Accela UHPLC and the PAL autosampler to the Thermo Scientific TSQ Vantage triple-stage quadrupole MS the system was able to provide rapid, accurate and robust analysis and quantitation of six PFCs in human breast milk using SRM and H-SRM. Elimination of PFC contamination was achieved using a PFC-free Accela pump with a pre-cleaned PFC-free degasser while also replacing Teflon tubing with PEEK tubing. The excellent sensitivity and selectivity afforded by SRM on the TSQ Vantage system obviated the need for any further modifications of the LC configuration, a distinct advantage over other commercial platforms that require the use of in-line contaminant traps or column-switching methods for PFC analysis.

Using the integrated UHPLC/MS platform, separation of the six PFC analytes in a spiked human breast milk matrix was achieved within nine minutes. As the majority of interferences from matrices elute early at void volume, elution of the first compound at 3.64 minutes ensured a robust quantitation method. Excellent linearity in detector response was observed while H-SRM eliminated matrix interferences without compromising sensitivity.

The Accela system, combined with 1.9 μm particle columns and the industry’s highest pressure quaternary pump, enables fast and efficient chromatographic separations over an expansive range of flow rates and pressures. Delivering up to a tenfold improvement in signal-to-noise ratio compared to existing triple-quadrupole MS systems, the TSQ Vantage facilitates highly sensitive quantitation in matrix-rich samples and enhances analytical precision. The instrument is capable of high resolution selection of precursor ions, enabling H-SRM for greater analytical selectivity and accuracy.

For more information about the Thermo Scientific UHPLC/MS solutions or to obtain a copy of the application note, please call +1 866-463-6522, email analyze[.]thermofisher.com.

Thermo Scientific is part of Thermo Fisher Scientific, the world leader in serving science.

About Thermo Fisher Scientific
Thermo Fisher Scientific, Inc. (thermoscientific.com) is the world leader in serving science. Our mission is to enable our customers to make the world healthier, cleaner and safer. With revenues of more than $10 billion, we have approximately 35,000 employees and serve customers within pharmaceutical and biotech companies, hospitals and clinical diagnostic labs, universities, research institutions and government agencies, as well as in environmental and process control industries. We create value for our key stakeholders through two premier brands, Thermo Scientific and Fisher Scientific, which offer a unique combination of continuous technology development and the most convenient purchasing options. Our products and services help accelerate the pace of scientific discovery, and solve analytical challenges ranging from complex research to routine testing to field applications.

 
 
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Thermo Fisher Scientific Announces New UHPLC/MS Method for Sensitive, Precise and Reproducible Trace

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