AI Article Synopsis
- A new mass spectrometer was developed using a permanent magnet and an atmospheric pressure ionization source.
- The instrument achieved impressive mass resolving powers of up to 80,000 for electron ionization and 25,000 for electrospray ionization modes.
- It also showed low parts-per-million mass measurement accuracy for peptide mixtures within a mass range of up to 1200 m/z.
Article Abstract
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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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2041863 | PMC |
| http://dx.doi.org/10.1016/j.jasms.2007.05.010 | DOI Listing |
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