Purge & Trap (P&T) concentration is a common technique used for the analysis of Volatile Organic Compounds. An analytical trap is the major component of any P&T system and is responsible for trapping the analytes purged from a sample, and then after heating, releasing them for further analysis.
An analytical trap choice for Purge and Trap concentration offers specific challenges for end users. Most standard methods define the dimensions of the trap, as well as recommend packing materials. There are several packing choices that can be substituted, however, provided they meet the analytical requirements of the method.