Problem 10.3

a) The negative-ion FAB spectrum of triethanolamine matrix is shown below. Assign general formulas to those peaks with a mass label.

Negative-ion FAB spectrum of triethanolamine matrix

b) Provided sufficient intensity, what purpose can matrix peaks serve?

c) The above FAB spectrum shows a high noise level which is particularly obvious in the region where the intensity has been 10-fold expanded. Where does the noise come from?


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