System for on-line monitoring atmospheric pollutants

The utility model discloses a system for on-line monitoring atmospheric pollutants. The system comprises a filter membrane conveyor, a power device, a sampler, N pollutant detectors and an upper computer, wherein the power device is connected with the filter membrane conveyor to control the filter membrane conveyor to carry out transmission movement; the sampler is connected with the filter membrane conveyor and used for placing a sampled atmospheric sample to a blank filter membrane to generate a sample filter membrane; the N pollutant detectors are connected with the filter membrane conveyor and used for detecting the benchmark concentration of the respective corresponding pollutant type on the blank filter membrane conveyed by the filter membrane conveyor, as well as detecting the sample concentration of the respective corresponding pollutant type on the sample filter membrane; and the upper computer is connected with the N pollutant detectors and used for receiving and analyzing the respective detected benchmark concentration and the sample concentration, which are respectively sent by the N pollutant detectors, to obtain the content value of each pollutant type in the atmosphere. The content of N pollutants in the atmosphere can be detected under the same system for on-line monitoring the atmospheric pollutants, so that accurate monitored data can be timely and quickly provided for governing the atmospheric pollution.