Aviv Amirav, Tel Aviv University and Aviv Analytical.
The United States Environmental Protection Agency method 8270 is one of the most widely used GC-MS analysis. It lists over 250 semivolatile compounds and usually GC-MS methods are developed around the analysis of available 8270 mixtures such as the Restek MegaMix with 76 compounds.
In this study we demonstrate and discuss this mixture analysis by GC-MS with Cold EI. We show that GC-MS with Cold EI can easily perform this analysis and with several important benefits of faster analysis of 10 minutes, complete elimination of ion source peak tailing even for compounds such as pentachlorophenol, benzidine and large PAHs and the provision of enhanced molecular ions while retaining NIST library identification. Thus, GC-MS with Cold EI is the best tool for environmental analysis that generates the greatest amount of sample and matrix information.