DETECTOR FOR HIGH-PERFORMANCE LIQUID CHROMATOGRAPH

摘要

PROBLEM TO BE SOLVED: To provide a detector for a high-performance liquid chromatograph which has a large S/N ratio, which has a sufficient dynamic range and which can perform a high-sensitivity detection.;SOLUTION: A mobile phase and a sample reach a measuring flow channel 16, monochromatic light is irradiated from a spectroscope 8 so as to be detected by a detecting element 13, and a detection signal is sent to a control part 19. The mobile phase and the sample are moved further to a measuring flow channel 17, and monochromatic light is irradiated from a spectroscope 3 so as to be detected by a detecting element 12. In the control part 19, the required time in which the mobile phase and the sample are moved to the flow channel 17 from the flow channel 16 is calculated on the basis of the liquid feed speed of a pump and on the basis of the internal volume of the flow channel 16. The detection signal obtained by the detecting element 13 is added to a detection signal obtained by the detecting element 12 after the required time in which the mobile phase and the sample are moved from the flow channel 16 to the flow channel 17, their added value is divided by two, and a mean value is calculated by the control part 19.;COPYRIGHT: (C)2003,JPO