Dangerous chemical metering device for environmental monitoring and control method

The invention relates to a dangerous chemical metering device for environmental monitoring and a control method, and relates to the technical field of chemical metering and monitoring. The device comprises a box body, a leveling platform used for metering and leveling is arranged in the box body, an electronic scale or a measuring vessel is detachably arranged on the leveling platform, and the leveling platform and the electronic scale are electrically connected with a control unit; a light source is arranged on the leveling platform, a light receiving module is arranged at the position, corresponding to the measuring vessel, of the leveling platform, and light emitted by the light source is emitted to the measuring vessel and the light receiving module on the leveling platform through an emergent light module arranged on the leveling platform. Emergent light and incident light of the measuring vessel are received and processed by a light receiving module arranged on the leveling platform and then are emitted