Improved Recoveries and Lower Background for the Analysis of PAHs in Olive Oil

contributed by Supelco | 10/08/2014

Using Supelclean™ EZ-POP NP and an SLB®-5ms GC Column

A recent survey implemented by Supelco revealed that 58% of analytical chemists in the food industry find the analysis of compounds in fatty matrices to be highly problematic. Lipid interferences can produce elevated detection limits, contamination of LC and GC systems, and ultimately decrease instrument and column lifetime.

Current extraction and cleanup techniques for fatty samples may be time consuming, expensive, and/or provide insufficient background removal prior to analysis. For this reason, a new approach has been developed. The Supelclean EZ-POP NP, a dual-layer SPE cartridge containing Florisil^® and Z-Sep/C18, was designed for the extraction of nonpolar analytes from oil matrices. By means of Lewis acid/base and hydrophobic interactions, fatty matrix interferences are preferentially retained by the cartridge while analytes of interest are eluted. In this way, lipid interferences are removed from the sample.

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