| 单词 | Mass Spectrometry,Matrix-Assisted Laser Desorption-Ionization |
| 释义 | Mass Spectrometry,Matrix-Assisted Laser Desorption-Ionization《英文msh词典》Mass Spectrometry,Matrix-Assisted Laser Desorption-Ionization [同义词] Mass Spectrometry,Matrix-Assisted Laser Desorption-Ionization [主题词] Spectrometry,Mass,Matrix-Assisted Laser Desorption-Ionization [中文释义] 质谱法,基质辅助激光解吸电离 [英文释义] A mass spectrometric technique that is used for the analysis of large biomolecules. Analyte molecules are embedded in an excess matrix of small organic molecules that show a high resonant absorption at the laser wavelength used. The matrix absorbs the laser energy,thus inducing a soft disintegration of the sample-matrix mixture into free (gas phase) matrix and analyte molecules and molecular ions. In general,only molecular ions of the analyte molecules are produced,and almost no fragmentation occurs. This makes the method well suited for molecular weight determinations and mixture analysis. |
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