ESI-QqTOF-MS/MS and APCI-IT-MS/MS analys
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Rui Li; Yan Zhou; Zhijun Wu; Lisheng Ding
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Article
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2006
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John Wiley and Sons
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English
β 362 KB
## Abstract Using highβresolution quadrupole timeβofβflight mass spectrometry along with an electrospray ionization source (ESIβQqTOFβMS), accurate molecular weights of 13 steroid saponins extracted from the rhizomes of __Dioscorea panthaica__ were acquired and the corresponding molecular formulae