کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1182229 | 1491709 | 2008 | 4 صفحه PDF | دانلود رایگان |

The technology of control of resonant excitation is a key to improve the sensitivity, resolution, and realize the multiple-stage mass spectrometry for quadrupole ion trap. Considering miniaturization is an important trend in the development of mass spectrometer, the method of amplitude modulation of direct digital synthesizer (DDS) realized by filed-programmable array (FPGA) software was proposed, the digital control technology of resonant excitation was researched and designed, and further the new system whose hardware was simpler was developed. In the electrospray ionization-rectilinear ion trap mass spectrometer, which requires higher performance on resonant excitation control system than several others, using the system, various functions were realized including isolation of an ion, three-stage mass spectrometry, full scan in the range of m/z 600–2000 Thomson. The testing showed that the power consumption of the developed control unit was 10% of that using hardware to modulate amplitude, and the performance of the system met the requirement of quadrupole ion trap.
Journal: Chinese Journal of Analytical Chemistry - Volume 36, Issue 5, May 2008, Pages 715-718