Laser microprobe mass spectrometry (LMMS) has been used to systematically study polyfunctional molecules, covering a wide range of structure and polarity. The knowledge about the mechanisms actually involved for desorp tion and ionization (DI) of organics by laser microbeam irradiation of solid samp
Determination of organic and inorganic compounds in the femtogram range by laser microprobe mass spectrometry
β Scribed by Feigl, Peter K. D. ;Krueger, Franz R. ;Schueler, Bruno
- Publisher
- Springer-Verlag
- Year
- 1984
- Weight
- 740 KB
- Volume
- 83
- Category
- Article
- ISSN
- 0344-838X
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Application of FT LMMS to inorganic compounds offers the advantage of direct speciation. This means that signals which refer to intact analyte molecules are detected. Cumnt concepts of desorption and ionization in LMMS are mainly based on time-of-llight data and hence on ions formed during the laser
Laser microprobe mass spectrometry (LMMS) has been applied systematically to a variety of organic polyfunctional molecules, covering a wide range of structures and polarities. The microprobe generally offers a combination of desorption under relatively mild conditions with abundant fragmentation. We
Osmometric molecular mass determinations of neutral medium-polar model compounds in the range of 1000-1500 could be carried out with an error of less than 8%. Electron impact (El) mass spectrometry failed. The fast atom bombardment (FAB) method provided MHQ or (M -H)Q ions but with low abundance. #