New Applications Using GC BID Detector

The Barrier Ionization Discharge (BID) detector generates a 17.7 eV helium plasma that ionizes almost all compounds except Neon. A newly designed quartz dielectric chamber allows for a lower discharge current and higher operating temperature. The BID is a universal detector with sensitivity greater than 100 times that of a TCD. It is an ideal detector for trace levels of permanent gas, water, volatile fatty acids and light hydrocarbons.
Two customized GC applications are presented. Two 6-port valves are used to inject, trap and release permanent gases. A 4-port switching valve was used to direct high concentration sample components to a TCD.