Dynamic head-space (purge and trap) injection systems include a sparging device by which volatile substances in solution are swept into an absorbent column maintained at a low temperature.

• 动态顶空（吹脱和补集）进样系统包含鼓泡装置，通过这个鼓泡装置，溶液中的挥发性物质进入维持低温的吸附柱中。