| Title |
Algorithm to Improve Mass Spectral Resolution of Gas Chromatography Mass Spectrometer |
| DOI |
http://doi.org/10.5370/KIEE.2018.67.9.1232 |
| Keywords |
GC-MS ; Mass spectrum ; Curve fitting ; Linear fitting ; Peak position error |
| Abstract |
This paper proposes methods for improving mass spectral resolution for a gas chromatograph mass spectrometer. The slope signs of the 1st and 2nd fitting functions for the ion signal block of each mass index are obtained, and the unnecessary element signals in the ion signal block are removed. The spectrum can be obtained by obtaining the second- order fitting function of the reconstructed ion signal block using only the effective ion signals. In addition, the resolution of the mass spectrum can be improved by correcting the error caused by the shift of the spectral peak position. To verify the performance of the proposed methods, computer simulations were performed using the actual ion signals obtained from the GC-MS system under development. Simulation results show that the proposed method is valid. |