METHOD AND DEVICE FOR MASS SPECTROMETRY

摘要

A mass spectrometry is equipped with a liquid specimen supply part which supplies a liquid specimen sandwiched between bubbles, an ion source part ionizes the specimen, and a mass spectrometry part which detects ions separated in accordance with mass. In particular the ion source part is configured so as to include a liquid supply tube for transporting a specimen from the liquid specimen supply part, a degassing/liquid retention part in which bubbles are removed, a spraying part which ionizes the specimen, and a high-voltage power supply part which applies a high voltage to the spraying part. The device is further characterized in that after removing the bubbles, a Taylor cone is formed from the resultant pre-solution, and the specimen is ionized thereafter. Thus, the ionization of an intended specimen is stabilized, and the measurement reproducibility is improved.

主权项

1. A mass spectrometer comprising: a sample-feeding unit for interposing a sample between bubbles and feeding the sample, an ion source unit for ionizing the sample and a mass analyzer unit for separating the ions generated by the ion source according to the masses and detecting the ions;
characterized in that the ion source unit comprises a solution-sending pipe which is a pipe for transporting the sample from the sample-feeding unit, a deaeration solution storage unit for removing the bubbles, a spray unit for ionizing the sample and a high voltage power supply unit for applying a high voltage to the spray unit, and a Taylor cone is formed with a solvent after removing a bubble, and then the sample is ionized.