Semivolatiles (Pest/PCB) by GC

GC (with a non-MS detector) is a versatile technique used for many methods. This is because each detector is suitable for different compound classes. Analyte types include organochlorine pesticides, polychlorinated biphenyls (PCBs) as Aroclors, herbicides, organophosphorous pesticides, nitrosamines, phenols, phthalate esters, haloacetic acids, disinfection by-products and solvents, and polyaromatic hydrocarbons (PAHs). To increase identification confidence, each extract is typically analyzed on two columns, each with a different selectivity. Prior to analysis, samples first undergo an extraction process which partitions analytes into an organic solvent compatible with the instrumentation. Example US EPA methods include 517, 508, 515, 552, 608, 610, 615, 8041, 8061, 8081, 8082, 8100, 8141, 8151, OLM04.3, TO-4, and TO-10.