Thermal desorption applications guide: Environmental monitoring

This application note from Markes International emphasizes the importance of monitoring organic chemicals in the air, regardless of whether they originate from human activities or natural sources.This monitoring is crucial for evaluating their impact on human health and their contribution to global climate. The focus of this note is to illustrate how thermal desorption (TD) can be utilized to monitor compounds in various scenarios within the field of environmental monitoring. The primary sampling techniques discussed include passive (diffusive) sampling of air onto sorbent tubes, pumped (active) sampling of air onto sorbent tubes, online monitoring of air/gas streams, and pre-concentration of air samples collected in canisters.