Soft Supercharging of Biomolecular Ions in Electrospray Ionization Mass Spectrometry
β Scribed by K. Chingin; N. Xu; H. Chen
- Book ID
- 121749344
- Publisher
- Elsevier Science
- Year
- 2014
- Tongue
- English
- Weight
- 513 KB
- Volume
- 25
- Category
- Article
- ISSN
- 1044-0305
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An approach to enable negative ion electrospray ionization (ESI) mass spectrometric detection of analytes that lack acidic sites and thus exhibit weak [MΓH] Γ signals has been developed. The method relies upon attachment of Cl Γ ions present in electrosprayed solutions of chlorinated solvents such a
## Abstract Fifteen identified Cβ18 fatty acylβcontaining saponin structures from __Quillaja saponaria__ Molina have been investigated by electrospray ionization ionβtrap multipleβstage mass spectrometry (ESIβITβMS^__n__^) in positive ion mode. Their MS^1^βMS^3^ spectra were analyzed and ions corre