Increase Sample Throughput with New 15-Minute, Low-Level PAH GC-MS Analysis

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Fast, low-level analysis of polycyclic aromatic hydrocarbons (PAHs) is of global interest because of the high toxicity and carcinogenic properties of some of these compounds. For GC-MS analyses, the structure of PAHs lends them to analysis in the more sensitive, though selective, selected ion monitoring (SIM) mode because they commonly ionize without significant fragmentation under typical electron ionization conditions, resulting in strong molecular ion signals. This makes it easy to convert an existing semivolatile compound analysis, like U.S. EPA 8270D, that is typically run in full scan mode, to a SIM analysis that is able to detect even lower levels of PAHs.

This application note shows how fast PAH analysis can be achieved at low levels using the GC Accelerator kit. The PAH GC-MS analysis shown here takes advantage of scaling the traditional column format (30 m,
0.25 mm, 0.25 μm Rxi-5Sil MS) down to a shorter, more efficient column that yields the same separations in less time (20 m, 0.15 mm, 0.15 μm Rxi-5Sil MS).

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