The invention discloses a rotating disk microfluidic concentration
measurement device and method based on photometric detection. A rotating disk
microfluidic chip, a photometric detection device bracket, and an AC
servo motor are arranged inside a sealed
dark room, and the output shaft of the AC
servo motor is vertical to the motor axis. A horizontal rotating disk
microfluidic chip is installed upward and coaxially. The rotating disk
microfluidic chip is equipped with an N-level
test solution interpenetration zone, and each level of
test solution interpenetration zone is based on the center It is an arc shape in the center of the circle, and the spring-like
test solution flow channel between the adjacent two-stage test solution interpenetration zones is connected and communicated; the
rotating disc microfluidic
chip is used in combination with the rotating
dilution positioning technology to realize the effective positioning of the
dilution concentration, thereby Quickly calculate the
dilution ratio, and multiply the
dilution ratio by the corresponding relationship between the known
optical path and the optimal concentration to generate the
absorbance to deduce the precise concentration of the liquid to be tested. The process of sample injection, detection, and concentration calculation are all automated.