| abstract |
The invention discloses a surface water quality COD optical detection device. The device comprises a water path system, a light path system and a detection system, wherein the water path system can automatically sample and pre-treat water samples to reduce manual participation, can carry out self-cleaning, increases the measurement accuracy, and can change the throwing depth of a water inlet pipeline by using a motor to realize the layered detection of surface water; the light splitting device in the light path system comprises a xenon lamp light source, a filter lens, an incident slit, incident light, a collimating lens, an objective lens, a darkroom, emergent light, an emergent slit, a five-phase stepping motor and a planar grating. The precision of the rotation angle of the plane grating in the optical path system can reach 0.01 degrees, and the measured water sample can be accurately and dynamically detected. The device has high detection precision, the used optical method can not generate secondary pollution to the water body, the detection efficiency and convenience are effectively improved, and the device can be applied to the construction of a water environment monitoring system. |