The Bioanalysis Glossary


238. ion trap mass spectrometer A mass spectrometer that traps ions in a cell or along a linear quadrupole, such that scanning eject ions from the trap according to their m/z.


239. isobaric isomers Compounds with identical molecular formulae and molecular weights that are measured at the same m/z in a mass spectrometer but have different atomic or spatial configurations.


240. isocratic elution A liquid chromatographic elution using a single and constant mobile phase composition.


241. isotope dilution An isotopically enriched substance identical to the analyte that is added to an analytical sample. The ratio of the dilution of the isotopically enriched substance can then be used to determine the amount of analyte in the sample.


242. isotopologue An isotopically labeled, or isotopically distinct, analogue of a given compound.


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Bioanalysis (2020) 12(21) Suppl. 1


future science group


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