| 摘要 |
PROBLEM TO BE SOLVED: To determine a user of appropriate timing for repairing a corona needle in an ionizer of a high-speed liquid chromatograph mass spectrometer when the corona needle is contaminated, to notify a user of the timing, and to make the user safely perform repair work. SOLUTION: A repair timing determination part 6 determines the contamination state of the corona needle 8 based on a shape of a chromatogram created by a chromatogram creation part 5. When the repair timing determination part 6 determines that the corona needle 8 needs to be repaired, the repair timing determination part notifies a notification part 7 and a safety mechanism 42 of that effect. The notification part 7 notifies the user that the corona needle 8 needs to be repaired. The safety mechanism 42 controls a high-voltage power supply 41 and reduces a voltage applied to the corona needle 8. COPYRIGHT: (C)2011,JPO&INPIT |
