کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1195646 964399 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Axial CID and High Pressure Resonance CID in a Miniature Ion Trap Mass Spectrometer Using a Discontinuous Atmospheric Pressure Interface
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Axial CID and High Pressure Resonance CID in a Miniature Ion Trap Mass Spectrometer Using a Discontinuous Atmospheric Pressure Interface
چکیده انگلیسی

Axial collision induced dissociation (CID) and high-pressure resonance CID were implemented and compared with normal low-pressure resonance CID in a miniature ion trap mass spectrometer to obtain more complete fragmentation spectra. Axial CID was realized simply by applying a potential to the discontinuous atmospheric pressure interface (DAPI) capillary without performing parent ion isolation before dissociation. High-pressure resonance CID employed a double-introduction pulse scan function, by means of which precursor ions isolated at low-pressure (<10−3 torr) were dissociated at high-pressure (0.1 torr–1 torr) with higher excitation energy, so that tandem MS of isolated precursor ions was achieved and extensive fragmentation was obtained. A simple peptide (Leu-enkephalin) and dye molecule (rhodamine B) ionized by ESI were used to investigate both methods and compare them with normal low-pressure resonance CID.

Graphical AbstractTwo new methods and one old method of CID in a miniature ion trap are compared.Figure optionsDownload high-quality image (159 K)Download as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the American Society for Mass Spectrometry - Volume 21, Issue 2, February 2010, Pages 209–214
نویسندگان
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