Purge Flow Effects on USEPA Method 524.3 Compounds

During volatile analysis, samples are purged with an inert gas in order for the Volatile Organic Compounds (VOCs) to be swept out of the sample matrix and onto an analytical trap.   For years, the established purge flow rate and time has been 40ml/min for 11 minutes.  USEPA Method 524.3 changed this. 

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