Dry Electrolytic Conductivity Detector (DELCD)

Non-radioactive alternative to ECD High sensitivity detects down to 1 ppb Selective to chlorinated and brominated molecules Best used with headspace or purge & trap injectors Can be combined with FID, NPD or TID detectors The Dry Electrolytic Conductivity Detector is useful for low-level detection of chlorinated and brominated solvents in environmental samples and other trace analyses. In the picture above, a DELCD is mounted next to FID and PID detectors on a Buck GC.  The DELCD is much like the ECD in sensitivity, but it is much more selective to halogens and blind to oxygen. The Buck DELCD differs from the traditional wet ELCD in that it uses neither a solvent electrolyte nor a nickel reaction tube, and the reaction products are detected in the gaseous phase. In the high sensitivity mode (no hydrogen, using dry cylinder air) the DELCD can detect down to the low picogram range. In this mode, the DELCD is about 100 times more sensitive than the FID/DELCD. However, the high sensi