What does ECD mean?

[DominicMarie]

ECD is the abbreviation for Electron Capture Detector (electrical-condactivity-detector, ECD). It is the most sensitive gas chromatography detector and also the earliest selective detector. It only responds to compounds capable of capturing electrons, such as halogenated hydrocarbons and compounds containing heteroatoms like N, O, and S. Its response is independent of time. Additional Information: 1. Application Fields: Due to its high sensitivity and good selectivity, it is also the most widely used type among radioactive ionization detectors. It is extensively applied in fields such as biology, medicine, pesticides, environmental protection, metal complexes, and meteorological tracking. 2. Principle: The main body of the conductivity detector consists of conductive positive or negative electrodes made of glassy carbon (or platinum sheets). The two electrodes are separated by a 0.05mm thick polytetrafluoroethylene film. This film has a long, narrow channel in the middle serving as a flow cell, with a volume of only 1-3ul. The positive and negative electrodes are only 0.05mm apart, and when ions in the mobile phase pass through the flow cell, they cause a change in conductivity.