Ozone is an allotrope of oxygen, the chemical formula is O3, the formula weight is 47.998, and it is a light blue gas with a fishy smell. Ozone has strong oxidizing properties and is a stronger oxidant than oxygen. It can oxidize at lower temperatures. For example, it can oxidize silver to silver peroxide; oxidize lead sulfide to lead sulfate; react with potassium iodide to generate iodine; turpentine , gas, etc. can spontaneously combust in ozone.

Unlike particulate matter, ozone is a secondary pollutant, formed mainly by photochemical reactions of precursors in the atmosphere. Photochemical reaction refers to the process in which primary pollutants such as volatile organic pollutants and nitrogen oxides in the atmosphere react under the action of ultraviolet rays to generate secondary pollutants such as ozone and peroxyacetyl nitrate.

The formation of ozone requires certain meteorological conditions. Since the reaction process requires the participation of ultraviolet rays, the ozone concentration tends to increase during the daytime in summer when the light is good, the humidity is high, and the humidity is low. In the absence of wind, ozone can continue to accumulate. , and eventually ozone pollution occurs. Another feature of ozone pollution is that it is difficult to detect. When the particulate matter pollution is serious, the foggy phenomenon can be seen intuitively. However, high ozone concentration often occurs in "good weather" with blue sky and white clouds, which makes people neglect to take precautions. Gaseous pollutants cannot be protected by mouth, so it is difficult to avoid harm to the human body. In this case, outdoor activities can only be minimized to reduce the impact of ozone.

It is precisely because ozone is difficult to detect and is highly harmful to the human body, so it is necessary to monitor this gaseous pollutant, and effectively start from the aspects of treatment methods and protective measures. For ozone monitoring, ZWIN-AQMS06 miniature air quality monitor can be selected. Its structure design is reasonable, and it adopts pump-suction sampling method. It can monitor "four gases and two dusts" and five meteorological parameters at the same time. The sampling is divided into two channels, and the gas is divided into a separate gas channel for intake, which does not interfere with each other, and realizes the numerical accuracy of the monitoring factor.