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MASS SPECTROMETRY APPARATUS AND METHOD USING THE APPARATUS

  • US 20100294926A1
  • Filed: 05/21/2010
  • Published: 11/25/2010
  • Est. Priority Date: 05/22/2009
  • Status: Active Grant
First Claim
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1. A mass spectrometry apparatus comprising:

  • a substrate for mass spectrometry that is used in surface-assisted laser desorption/ionization mass spectrometry;

    a light irradiation means that irradiates a sample that is in contact with a surface of the substrate for mass spectrometry with measurement light to desorb an analyte contained in the sample from the surface of the substrate for mass spectrometry;

    a metal probe that generates near-field light at the leading end thereof by irradiation with the measurement light;

    a detector that detects the desorbed analyte; and

    an analysis means that performs mass spectrometry on the analyte based on a detection result by the detector, wherein the leading end of the metal probe is arranged in such a manner that the near-field light generated by irradiation with the measurement light is in contact with a measurement light irradiation portion of the sample, and wherein the metal probe is arranged, with respect to the measurement light irradiation portion of the sample, at a position in a different direction from the direction of the detector.

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