ISSN:
0306-042X
Schlagwort(e):
Chemistry
;
Analytical Chemistry and Spectroscopy
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
Notizen:
The applicability and the present limitations of the laser microprobe mass analyser LAMMA®-500 as an instrument for the structural analysis of higher molecular weight, non-volatile, bio-organic compounds (≤2000 u) were investigated. For this purpose mass spectra of various synthetic and natural compounds representing cell wall components of Gram-negative bacteria, e.g. phospholipids and lipid A-like molecules were studied. In several cases these spectra exhibited relatively simple and interpretable patterns with a prominent quasi-molecular ion originating from alkali attachment. For one group of the compounds studied - synthetic lipid A-like molecules containing a phosphate moiety - the spectra were rather complicated and lacked pronounced quasi-molecular peaks. Possible reasons for this observation are discussed.
Zusätzliches Material:
12 Ill.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/bms.1200110308
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