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    • 10. 发明授权
    • Method and apparatus for changing relative concentrations of gases present within a gaseous sample for mass spectrometry
    • 用于改变气相样品中存在的气体相对浓度的方法和装置用于质谱
    • US09182325B2
    • 2015-11-10
    • US11489150
    • 2006-07-18
    • Arthur Schleifer
    • Arthur Schleifer
    • G01N33/00B01L5/00G01N1/40B01L3/00
    • G01N1/4005B01L3/5027
    • An apparatus for changing relative concentrations of first and second analyte substances in an analyte sample comprises a sample cell defining a sample chamber therewithin, and a semipermeable boundary member disposed in the sample chamber to define first and second sides of the sample chamber. Sample flow input and sample flow output ducts direct an analyte sample containing respective initial concentrations of the first and second analyte substances into the first side of the sample chamber. The semipermeable boundary member permits diffusion therethrough of the first and second analyte substances to the second side of the sample chamber at different rates. An analyte sample in the second side of the sample chamber, and an analyte sample exiting the first side via the sample flow output duct, have respective concentrations of the first and second analyte substances that are different from the initial concentrations.
    • 用于改变分析物样品中第一和第二分析物质的相对浓度的装置包括在其中限定样品室的样品池和设置在样品室中以限定样品室的第一和第二侧的半透性边界部件。 样品流入口和样品流输出管道将含有相应初始浓度的第一和第二分析物质的分析物样品引导到样品室的第一侧。 半透性边界构件允许第一和第二分析物质以不同的速率扩散到样品室的第二侧。 样品室第二侧中的分析物样品和经由样品流量输出管道离开第一侧的分析物样品具有不同于初始浓度的第一和第二分析物质的相应浓度。