期刊
JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY
卷 18, 期 8, 页码 1552-1558出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jasms.2007.05.010
关键词
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资金
- NCRR NIH HHS [R44 RR020288-02, 2R44RR020288-02, R44 RR020288] Funding Source: Medline
A new Fourier transform ion cyclotron resonance mass spectrometer based on a permanent magnet with an atmospheric pressure ionization source was designed and constructed. A mass resolving power (full-width-at-half-maximum) of up to 80,000 in the electron ionization mode and 25,000 in the electrospray mode was obtained. Also, a mass measurement accuracy at low-ppm level has been demonstrated for peptide mixtures in a mass range of up to 1200 m/z in the isotopically resolved mass spectra.
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