ISSN:
0306-042X
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Basic aspects f fast atom bombardment mass spectrometry such as matrix effects, discriminatory effects between positive and negative ion formation, sensitivity, and isotope dilution have been investigated using oligopeptides and amino acid derivatives as model compounds. The matrix selected was found to have a decisive influence on the sensitivity of fast atom bombvardment. Acidic and basic properties of the samples could be correlated with different ionization efficiencies in positive or negative ion formation. With respect to sensitivity, a roughly linear relation between signal intensity and sample amount was observed in the range of 1 ng to 10 μg of sample. Nanogram amounts of samples could be detected by fast atom bombardment mass spectrometry. Finally, the suitability of fast atom bombardment for quantitative investigations is proven by the investigation of isotopically labelled mixtures.
Additional Material:
8 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/bms.1200110505
