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1. 发明授权

US07297941B2 Methods for improved data dependent acquisition 有权
标题翻译：改进数据相关获取的方法
公开(公告)号：US07297941B2
公开(公告)日：2007-11-20
申请号：US11144178
申请日：2005-06-02
申请人： Michael W. Senko , Eric Hemenway , Tina A. Hemenway
发明人： Michael W. Senko , Eric Hemenway , Tina A. Hemenway
IPC分类号： B01D59/44
CPC分类号： H01J49/0036 , G01N30/72 , G01N30/8603 , G01N30/8693
摘要： A method of analyzing data from a mass spectrometer for a data dependent acquisition is described. In an embodiment of this method, mass spectral scans are taken of a sample eluted from a liquid chromatography column. An extracted ion chromatogram (XIC) is then created for each m/z data point of the mass spectral scans and the XIC for each m/z data point are correlated to a model function, such as a monotonically increasing function, or the first half of a gaussian function, to obtain a XIC correlation value. A weighting function is then applied to the XIC correlation value to obtain a current weighted intensity. The current weighted intensity for each m/z point is used to reconstruct a weighted mass spectrum, which is then used to make a real-time decision for the data dependent acquisition. In an embodiment, the data dependent acquisition is the performance of tandem mass spectrometry.Embodiments of the invention also describe a sample processing apparatus for the data dependent acquisition and a computer readable medium that provides instructions to the sample processing apparatus to perform the method described above.
摘要翻译：描述了从质谱仪分析数据依赖获取的数据的方法。在该方法的一个实施方案中，从液相色谱柱洗脱的样品进行质谱扫描。然后为质谱扫描的每个m / z数据点创建提取的离子色谱图（XIC），并且对于每个m / z数据点，XIC与模型函数（例如单调递增函数）或上半部分的高斯函数，以获得XIC相关值。然后将加权函数应用于XIC相关值以获得当前加权强度。每个m / z点的当前加权强度用于重建加权质谱，然后将其用于对依赖于数据的获取进行实时决策。在一个实施例中，依赖于数据的获取是串联质谱法的性能。本发明的实施例还描述了用于数据相关获取的样本处理装置和向样本处理装置提供指令以执行上述方法的计算机可读介质。

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