To provide a mass spectrometer that reduces an operator's time and effort by measuring an unknown mixture test piece at a high speed by a series of measurement operations.
The mass spectrometer is for analyzing the test piece by introducing the mixture test piece having being separated using a liquid chromatograph 1. The separated test piece is ionized by an ion source 7, and ions of the test piece are taken into from ion inlet apertures 14a and 14b and analyzed by a mass analyzer section. This ion analyzer is constituted of an ion trap analyzer for carrying out the mass spectrometry of an ion trap type. Furthermore, the test piece introduced after being separated by a control apparatus 41 is identified by a series of measurement operations by positive-ion measurement and negative-ion measurement by the ion trap type mass analyzer section. Alternatively, the polarity of the test piece is selected and set by discriminating the positive-ion measurement and negative-ion measurement which are first carried out in measurement, and measurement can be carried out at a high speed and with high precision, and the operator's time and effort is reduced.
COPYRIGHT: (C)2006,JPO&NCIPI
Takayuki Nabeshima
Yuichiro Hashimoto
Minoru Sakairi
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