Abstract
The identification of components separated by LC* can be done either by preparative chromatography and off-line MS or, with advantages, by on-line LC-MS.θ The moving belt and DLI are the oldest commercially available interfaces. The belt allows EI, CI or FAB to be chosen for ionisation, but samples may suffer from thermal degradation. DLI is limited to CI and suits thermolabile samples, but the 5 μm orifice in the interface is easily blocked. DLI has been replaced by thermospray LC-MS, which has become less elaborate and is now available in nearly all spectrometers on the market.
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Abbreviations
- LC:
-
liquid chromatography (HPLC)
- MS:
-
mass spectrometry
- API:
-
atmospheric pressure ionization
- CI:
-
chemical ionization
- DLI:
-
direct liquid introduction
- EI:
-
electron impact
- FAB:
-
fast atom bombardment
- SIM:
-
selected ion monitoring.
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Bruins, A.P. (1988). LC-MS and LC-MS-MS for Biomedical Analyses. In: Reid, E., Robinson, J.D., Wilson, I.D. (eds) Bioanalysis of Drugs and Metabolites, Especially Anti-Inflammatory and Cardiovascular. Methodological Surveys in Biochemistry and Analysis, vol 18 A. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-9424-3_48
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