A. Mathey et al., IN-SITU ANALYSIS OF A NEW PERYLENE QUINONE IN LICHENS BY FOURIER-TRANSFORM LASER MICROPROBE MASS-SPECTROMETRY WITH EXTERNAL SOURCE, Rapid communications in mass spectrometry, 8(1), 1994, pp. 46-52
The application of Fourier-transform laser microprobe mass spectrometr
y to lichens is described. The in situ detection of a new perylene qui
none in samples of the tropical species Laurera sanguinaria Malme and
Graphis haematites Fee was achieved with minimal specimen preparation.
The high mass resolution and mass accuracy of the instrument eliminat
es the need for additional characterization of the isolated substances
by high resolution electron impact mass spectrometry and direct intro
duction probe.