Evaluating USEPA Method 524.3 Utilizing Newly Permissible Method Modifications to Purge and Trap Techniques

Purge and Trap (P&T) concentration in conjunction with Gas Chromatography/Mass Spectrometry (GC/MS) is a widely used technique for the determination of Volatile Organic Compounds (VOCs). Due to the sensitivity requirements required with drinking waters, P&T is the recommended technique for VOC extraction. Recently, the United States Environmental Protection Agency (USEPA) approved an updated version to their drinking water method, USEPA Method 524.3. This new revision allows more flexibility in method operating parameters that take advantage of current P&T capabilities and have the possibility of increasing lab productivity. This application note investigates purge extraction volume variations and their respective affects on compound response.

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