| 摘要 |
Based on three-dimensional data of time, wavelength and intensity acquired with a three-dimensional chromatograph, whether or not the peak-top intensity of the peak of a target component exceeds a predetermined upper limit is determined. If the intensity exceeds the limit, two wavelengths λ1 and λ2 are set in a spectrum passing through the peak top, where λ1 is the peak-top wavelength while λ2 is a wavelength which belongs to the peak and at which the intensity is within a predetermined range. For each point in time belonging to the target peak, the ratio between the intensity at λ1 and the intensity at λ2 in the spectrum at that point in time is calculated, and one of the calculated intensity ratios is selected as a correction value. Based on this correction value and a quantitative value calculated from a chromatogram at λ2, the quantitative value of the target component is determined. |
