White Ribbon : Meaning: This color is a symbol of innocence, victims of terrorism, violence against women, peace, right to life, bone cancer, adoptees, and retinal blastoma Pearl Ribbon : Meaning: This color is a symbol for emphysema, lung cancer, mesothelioma, and multiple sclerosis
From Wikipedia, the free encyclopedia. Schematic of an electron capture detector for a gas chromatograph with a 63 Ni source. 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 James Lovelock and is used in gas chromatography to detect trace amounts of chemical compounds in a sample.
Share. By Anne Marie Helmenstine, Ph.D. Definition: Electron capture is a type of radioactive decay where the nucleus of an atom absorbs a K or L shell electron and converts a proton into a neutron. This process reduces the atomic number by 1 and emits gamma radiation and a neutrino.