Mass spectra ot amino acids have been studied using the LAMM A laser microprobe. Quasl-molecular Ions, ( + H)+ and ( -H)~, are produced In high yields. The major neutral fragment loss from ( + H)+ corresponds to HCOOH. Loss
to a similar extent as the matrix composition changes.
ACKNOWLEDGMENTWe thank Margo Palmieri and Jeffrey Crain for helpful suggestions and Kimberly LaFreniere for an early release of her manuscript.
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