Analysis control device, liquid chromatographic system and analysis execution method

An analysis control device that controls a liquid chromatograph including a first liquid sender, a second liquid sender, a sample introducer, an analysis column, a junction and a fluorescence detector, comprising:

• a first liquid sending controller that controls the first liquid sender such that a mobile phase is supplied to the fluorescence detector through the analysis column and the junction during an analysis of a sample;
• a second liquid sending controller that controls the second liquid sender such that a fluorescent reaction liquid is supplied to the fluorescence detector through the junction during the analysis of the sample;
• a sample introduction controller that controls the sample introducer such that the sample is introduced into the mobile phase by the sample introducer at a position farther upstream than the analysis column during the analysis of the sample;
• and
• a generator that generates a chromatogram based on an output signal of the fluorescence detector during the analysis of the sample, wherein
• the second liquid sending controller causes the second liquid sender to start supplying the fluorescent reaction liquid such that the fluorescent reaction liquid arrives at the junction later than a point in time at which supply of the mobile phase starts and before the sample introduced into the mobile phase arrives at the junction, and causes the second liquid sender to stop supplying the fluorescent reaction liquid after the sample passes through the junction.