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    • 2. 发明授权
    • Mass spectrometer and mass spectrometry
    • 质谱仪和质谱仪
    • US07375316B2
    • 2008-05-20
    • US11712922
    • 2007-03-02
    • Masuyoshi YamadaMasao SugaIzumi Waki
    • Masuyoshi YamadaMasao SugaIzumi Waki
    • H01J49/00H01J3/07B01D59/44
    • H01J49/0422H01J49/107
    • A mass spectrometer capable of measuring under switching two ion sources at different pressure levels in which a sample gas separated by GC column is branched, and separately introduced to a first ion source (for example, APCI ion source) and a second ion source (for example, EI ion source) at a pressure level lower than that of the first ion source respectively. Preferably, the flow rate of the sample gas introduced to the APCI ion source is made more than the flow rate of the sample gas introduced to the EI ion source, so that the pressure for each of the ion sources can be maintained and analysis can be conducted by each ionization at a good balance in view of the sensitivity.
    • 一种能够在不同压力水平下切换两个离子源的质谱仪,其中由GC柱分离的样品气体被分支,并分别引入第一离子源(例如APCI离子源)和第二离子源(用于 例如,EI离子源),其压力水平分别低于第一离子源的压力水平。 优选地,引入到APCI离子源的样品气体的流量比引入到EI离子源的样品气体的流量更多,从而可以保持每个离子源的压力并且可以分析 鉴于敏感性,通过各种电离进行良好的平衡。
    • 4. 发明授权
    • Mass chromatograph
    • 质谱仪
    • US07064320B2
    • 2006-06-20
    • US11071345
    • 2005-03-04
    • Masuyoshi YamadaIzumi WakiHideo Kasima
    • Masuyoshi YamadaIzumi WakiHideo Kasima
    • H01J49/26G01N27/62
    • H01J49/0422G01N30/7213H01J49/145H01J49/168
    • A mass spectrometer has an atmospheric pressure chemical ionization source that includes a first ionization portion including a needle electrode, for generating a primary ion by discharge of the needle electrode a primary ion introduction aperture, and a second ionization portion including an introduction aperture, for generating a sample ion by the reaction between the primary ion and the sample gas introduced from an end of a column of gas chromatography, a sample ion movement aperture; and a mass analysis portion; wherein the end is arranged at a position satisfying the relation r≦2R where R is a radius of an inner diameter of the aperture and r is a distance between an axis connecting the center of the aperture and the center of the aperture, and the end.
    • 质谱仪具有大气压化学电离源,其包括第一离子化部分,其包括针状电极,用于通过针状电极排出初级离子引入孔而产生初级离子;以及第二离子化部分,其包括引入孔,用于产生 通过从气相色谱柱的端部引入的初级离子和样品气体之间的反应的样品离子,样品离子运动孔; 和质量分析部分; 其中端部被布置在满足关系r <= 2R的位置处,其中R是孔的内径的半径,r是连接孔的中心的轴线与孔的中心之间的距离, 结束。
    • 8. 发明授权
    • Mass spectrometer
    • 质谱仪
    • US06852970B2
    • 2005-02-08
    • US10699805
    • 2003-11-04
    • Masuyoshi YamadaIzumi Waki
    • Masuyoshi YamadaIzumi Waki
    • G01N27/62G01N33/00H01J49/04H01J49/10H01M8/04H01J49/28
    • H01J49/04G01N33/005H01M8/04082
    • There will be provided a mass spectrometer for detecting impurity in sample gas of a low flow rate. A mass spectrometer including: an atmospheric pressure chemical ionization source having a primary ionization part 28 for generating a primary ion by means of electric discharge of reagent gas, and a secondary ionization part 23 for generating an ion of the sample by a reaction of the primary ion and the sample; a mass spectrometric part 11 for performing mass spectrometric analysis of the ion generated; a mixing portion 33 for mixing the sample to be introduced into the secondary ionization part with dilution gas; and a mean 30 for controlling a flow rate of the dilution gas for flowing through the mixing portion; and a mean 12-1 or 12-2 or 12-3 for controlling a flow rate of the sample gas, wherein mixed gas obtained by mixing the sample with the dilution gas is introduced into the secondary ionization part and the sample is ionized.
    • 将提供用于检测低流量的样品气体中的杂质的质谱仪。 一种质谱仪,包括:大气压化学电离源,其具有通过反应气体的放电产生一次离子的一次离子化部28;以及二次离子化部23,其通过所述一次反应生成该样品的离子 离子和样品; 用于对生成的离子进行质谱分析的质谱部11; 混合部分33,用于将要引入二次电离部分的样品与稀释气体混合; 以及用于控制用于流过混合部分的稀释气体的流量的平均值30; 以及用于控制样品气体的流量的平均值12-1或12-2或12-3,其中通过将样品与稀释气体混合而获得的混合气体被引入二次电离部分,并且样品被离​​子化。
    • 10. 发明申请
    • Mass spectrometer and mass spectrometry
    • 质谱仪和质谱仪
    • US20070181802A1
    • 2007-08-09
    • US11712922
    • 2007-03-02
    • Masuyoshi YamadaMasao SugaIzumi Waki
    • Masuyoshi YamadaMasao SugaIzumi Waki
    • H01J49/00
    • H01J49/0422H01J49/107
    • A mass spectrometer capable of measuring under switching two ion sources at different pressure levels in which a sample gas separated by GC column is branched, and separately introduced to a first ion source (for example, APCI ion source) and a second ion source (for example, EI ion source) at a pressure level lower than that of the first ion source respectively. Preferably, the flow rate of the sample gas introduced to the APCI ion source is made more than the flow rate of the sample gas introduced to the EI ion source, so that the pressure for each of the ion sources can be maintained and analysis can be conducted by each ionization at a good balance in view of the sensitivity.
    • 一种能够在不同压力水平下切换两个离子源的质谱仪,其中由GC柱分离的样品气体被分支,并分别引入第一离子源(例如APCI离子源)和第二离子源(用于 例如,EI离子源),其压力水平分别低于第一离子源的压力水平。 优选地,引入到APCI离子源的样品气体的流量比引入到EI离子源的样品气体的流量更多,从而可以保持每个离子源的压力并且可以分析 鉴于敏感性,通过各种电离进行良好的平衡。