DATA PROCESSING SYSTEM FOR COMPREHENSIVE TWO-DIMENSIONAL CHROMATOGRAPH

摘要

A two-dimensional chromatogram creator creates a two-dimensional chromatogram based on data collected by a comprehensive two-dimensional GC/MS analysis. An extraction condition conformity determiner determines whether or not each MS/MS spectrum obtained through the analysis conforms to a compound extraction condition previously stored in a storage section, such as the presence of a specific peak on the MS/MS spectrum. Each spectrum which conforms to the condition is extracted. This spectrum is most likely to reflect a partial structure of a compound in which an analysis operator is interested. Accordingly, a condition conformity information superposing displayer displays a marker whose appearance varies according to the compound extraction condition, at a position corresponding to the retention time of the extracted spectrum on the two-dimensional chromatogram. On this two-dimensional chromatogram, the analysis operator can intuitively understand whether or not the compound of interest is present and where this compound is located.

主权项

1. A data processing system for a comprehensive two-dimensional chromatograph for processing data collected with a comprehensive two-dimensional chromatograph in which a sample separated into components by a primary column is divided at predetermined intervals of time, the divided sample is introduced into a secondary column to be further separated into components, and the components are introduced into a detector to be individually detected, the data processing system comprising:
a) a chromatogram creator for creating a two-dimensional chromatogram with two axes respectively indicating a retention time in the primary column and a retention time in the secondary column, based on the data collected with the comprehensive two-dimensional chromatograph; b) a condition entry-and-setting section for allowing an analysis operator to enter and set an extraction condition for selecting a piece of characteristic data from the data collected with the comprehensive two-dimensional chromatograph; and c) a superposing display processor for determining whether or not each piece of data collected with the comprehensive two-dimensional chromatograph conforms to the extraction condition entered and set through the condition entry-and-setting section, and for displaying a predetermined marker in a superposed form on the two-dimensional chromatogram if a piece of data which conforms to the condition is present, the marker displayed at a position corresponding to the retention times at which that piece of data is obtained.