electron capture detector ECD electron capture detector http://msi-ontology.sourceforge.net/ontology/CHROM.owl#msi_01085 WEB:<http://homepages.onsnet.nu/%7Ealkema/html/whatisgc.html> PERSON:Daniel Schober The electron capture detector is a GC detector that uses a radioactive Beta emitter (electrons) to ionize some of the carrier gas and produce a current between a biased pair of electrodes. When organic molecules that contain electronegative functional groups, such as halogens, phosphorous, and nitro groups pass by the detector, they capture some of the electrons and reduce the current measured between the electrodes. gas chromatography detector metadata complete