Automatic analysis device

An automatic analysis device, comprising:

• an evaporative concentration unit configured to perform a concentration process of evaporating an extract solution obtained by extracting a component to be analyzed in a sample to concentrate the component to be analyzed;
• an analysis unit configured to analyze the component to be analyzed of the sample;
• and
• a control unit configured to control operations of the analysis unit and the evaporative concentration unit, wherein
• the control unit is configured to determine whether to perform an evaporative concentration process on a component to be analyzed in the sample, and control the evaporative concentration unit to concentrate a component to be analyzed in a sample which is determined to be subjected to an evaporative concentration process,
• the extract solution contains an internal standard substance,
• a diluent containing a standard substance for concentration ratio calculation is added to the extract solution subjected to the concentration process performed by the evaporative concentration unit,
• the analysis unit is configured to detect signal amounts of the component to be analyzed, the internal standard substance, and the standard substance for concentration ratio calculation, and
• the control unit is configured to calculate a concentration ratio of the extract solution based on reference data for determination and the detected signal amounts, the reference data for determination being signal amounts of the internal standard substance and the standard substance for concentration ratio calculation, which are acquired in advance.