Effects of heavy-atom substituents on matrices used for matrix-assisted laser desorption-ionization mass spectrometry
作者： Lisa M. Preston Schaffter , Gary R. Kinsel , D. H. Russell
DOI: 10.1016/1044-0305(94)87002-0
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摘要: The data reported show that heavy-atom substitution on matrices are used for matrix-assisted laser desorption-ionization mass spectrometry enhance [M + H]+ ion yields of both Leu—enkephalin and vitamin B12. Heavy-atom alters the excited state relaxation dynamics as indicated by measured decreases in luminescence (fluorescence and/or phosphorescence) observed heavy atoms contain relative to nonheavy-atom-substituted matrices. results presented consistent with direct involvement an electronically matrix formation analyte ions.
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