Optical analysis device, optical analysis method, and optical analysis

An optical analysis method, comprising:

• a light irradiation step of irradiating a liquid sample with light;
• an ultrasonic irradiation step of irradiating the liquid sample with an ultrasonic wave;
• a first light receiving step of receiving transmitted light obtained by the light emitted in a state where the ultrasonic wave is emitted transmitting through the liquid sample;
• a second light receiving step of receiving scattered light obtained by the light emitted in a state where the ultrasonic wave is not emitted being scattered by a scatterer in the liquid sample.

An optical analysis system, comprising:

• a reaction vessel in which a liquid sample is stored;
• and
• an optical analysis device that is connected to the reaction vessel so that the liquid sample is able to be circulated via a pipe, wherein
• the optical analysis device includes:
• a light source unit configured to irradiate a liquid sample with light;
• a first light receiving unit configured to receive transmitted light that is emitted from the light source unit and transmitted through the liquid sample;
• a second light receiving unit configured to receive scattered light that is emitted from the light source unit and scattered by a scatterer in the liquid sample;
• an ultrasonic irradiation unit configured to irradiate the liquid sample with an ultrasonic wave;
• a reflection plate configured to reflect the ultrasonic wave that is emitted from the ultrasonic irradiation unit and propagated through the liquid sample;
• and
• a control unit configured to control the light source unit, the first light receiving unit, the second light receiving unit, and the ultrasonic irradiation unit, and
• the reaction vessel includes:
• an outflow port through which the liquid sample is supplied to the optical analysis device via the pipe;
• and
• an inflow port through which the liquid sample discharged from the optical analysis device flows in via the pipe.