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    • 3. 发明授权
    • Mass spectrometer for biological samples
    • 质谱仪用于生物样品
    • US07342223B2
    • 2008-03-11
    • US11151466
    • 2005-06-14
    • Kunihiko OhkuboKiichi FukuiKazuyoshi Itoh
    • Kunihiko OhkuboKiichi FukuiKazuyoshi Itoh
    • B01D59/44
    • H01J49/162H01J49/0463
    • The mass spectrometer according to the present invention includes a light source for emitting pulse light including a plurality of wavelengths; an ionizer for ionizing molecules of a sample by irradiating the light from the light source to the sample; and a mass analyzer for separating ions ionized in the ionizer according to their mass to charge ratios. For the light source, one including a plurality of ultrashort pulse laser sources each emitting a wavelength different from others, and one emitting ultrashort pulse light including plural wavelengths ranging from the visible region to the infrared region generated by dispersing an ultrashort pulse light with continuous (white) spectrum can be used. Pulse lights having plural wavelengths ranging from near infrared to the ultraviolet region respectively share the role; i.e., one of them vaporizes the sample without fragmenting it, and another ionizes the vaporized sample with the single-photon process or two-photon (or multi-photon) process. This enables ionization of protein complexes as a whole contained in the sample, and enables mass analyses of them.
    • 根据本发明的质谱仪包括用于发射包括多个波长的脉冲光的光源; 电离器,用于通过将来自光源的光照射到样品上来使样品的分子离子化; 以及质量分析器,用于根据电离质量与电离比分离在离子发生器中离子化的离子。 对于光源,包括多个发射不同于其他波长的超短脉冲激光源的光源,以及一个发射包括从可见光区域到红外区域的多个波长的超短脉冲光,通过分散具有连续的超短脉冲光 白色)光谱。 分别具有从近红外到紫外线区域的多个波长的脉冲光共同作用; 即,其中一个使样品蒸发而不使其分裂,另一个使用单光子过程或双光子(或多光子)过程将蒸发的样品电离。 这使得能够将样品中包含的蛋白质复合物电离,并且能够进行质量分析。