- 作者: 聶宗秀,林崇偉,彭文平,李遠哲,張煥正
- 作者服務機構: Institute of Atomic and Molecular Sciences, Academia Sinica, P.O. Box 23-116, Taipei 106, Taiwan, R.O.C.
- 中文摘要: A linear quadrupole mass spectrometer operating in the third stability region [(a, q) ? (3, 3)] has been developed and utilized to obtain the mass spectra of multiply charged protein ions generated by electrospray ionization. The spectra were acquired by scanning the frequency of the quadrupole with a home-built wide-band power amplifier from 400 to 100 kHz at constant voltage amplitudes in the range of 100 V. A mass resolution approaching R1/2 = 200 was achieved for doubly charged gramicidin S ions at m/z 570.5. Further improvement of the resolution is anticipated when a higher-voltage power amplifier is available.
- 英文摘要: --
- 中文關鍵字: Quadrupole mass analyzer; Frequency scan; Proteins.
- 英文關鍵字: --