This book (Practical Electron Microscopy and Database) is a reference for TEM and SEM students, operators, engineers, technicians, managers, and researchers.

An electron capture detector (ECD) is a device for detecting atoms and molecules in a gas through the attachment of electrons via electron capture ionization. The device was invented in 1957 by Dr. James E. Lovelock[1][2] and is used in gas chromatography to detect trace amounts of chemical compounds in a sample.[3][4]

These devices are different from electron detectors used in electron microscopes.

[1] J. E. Lovelock (1958). "A sensitive detector for gas chromatography". Journal of Chromatography A 1 (1): 35–46. doi:10.1016/S0021-9673(00)93398-3.
[2] J.E. Lovelock (1974). "The electron capture detector". Journal of Chromatography A 99 (1): 3–12. doi:10.1016/S0021-9673(00)90840-9.
[3] M. Krejči and M. Dressler (1970). "Selective detectors in gas chromatography". Chromatographic Reviews 13 (1): 1–59. doi:10.1016/0009-5907(70)80005-9.
[4] E. D. Pellizzari (1974). "Electron capture detection in gas chromatography". Journal of Chromatography A 98 (2): 323–361. doi:10.1016/S0021-9673(00)92077-6.