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    • 4. 发明申请
    • SYSTEM AND METHOD FOR ISOTOPIC SIGNATURE AND MASS ANALYSIS
    • 同位素签名和质量分析的系统与方法
    • WO2005009039A2
    • 2005-01-27
    • PCT/US2004/021248
    • 2004-07-02
    • WATERS INVESTMENTS LIMITEDCASTRO-PEREZ, JosePLUMB, RobertJONES, Christopher
    • CASTRO-PEREZ, JosePLUMB, RobertJONES, Christopher
    • H04N7/16
    • H01J49/04B01D59/44G01N30/8675H01J49/0031G01N30/7233
    • Mass intensity values, isotopic ratios and exact mass differences between isotopes may be obtained and analyzed to determine if there are one or more masses of interest. In one implementation, a method will look among the mass intensity values for peaks of interest. The mass intensity values, representative of isotopic signatures, will be compared to a criteria in order to determine which of the masses are of interest. Although the invention is not so limited, examples of such criteria include mass intensity values above a specified threshold, within a certain ratio of another mass intensity value, and/or separation between the masses themselves. Optionally, a tolerance may be applied to the criteria. If masses are found to be of interest, MS/MS can automatically be triggered for one or all of the masses of interest, when an analyzing system such as an LC-MS-MS, GC-MS-MS or MALDI-MS-MS system is used.
    • 可以获得并分析同位素的质量强度值,同位素比率和精确质量差异,以确定是否存在一种或多种感兴趣的质量。 在一个实现中,一种方法将在感兴趣的峰值的质量强度值之间查看。 将代表同位素签名的质量强度值与标准进行比较,以确定哪个质量是感兴趣的。 虽然本发明不限于此,但是这种标准的例子包括高于特定阈值的质量强度值,在另一质量强度值的一定比例内,和/或质量本身之间的分离。 可选地,公差可以应用于标准。 如果发现质量感兴趣,当分析系统如LC-MS-MS,GC-MS-MS或MALDI-MS-MS时,MS / MS可以自动触发一个或所有感兴趣的质量 系统被使用。