单词 | ultrasensitive mass spectrometry |
释义 | ultrasensitive mass spectrometry [¦ǝl·trǝ`sen·sǝd·iv `mas spek`träm·ǝ·trē] ANALYTICAL CHEMISTRY A form of mass spectrometry in which the ions to be detected are accelerated to megaelectronvolt energies in a particle accelerator and passed through a thin gas cell or foil, stripping away outer electrons, so that contaminating molecules dissociate into lower-mass fragments, and isobars can be distinguished by particle detectors that measure ionization rate and total energy. |
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