What pollutants are measured at air quality testing stations?

The core function of the air quality monitoring stations is to provide round-the-clock, uninterrupted real-time monitoring of various conventional pollutants and climate-related indicators in the atmosphere. The data collected by the stations will be transmitted directly to the environmental protection agencies as a scientific basis for judging the quality of the air and provide strong data support for the formulation of environmental protection policies. The types of pollutants of concern to the monitoring station include, but are not limited to, the following categories:

Fine particulate matter, such as PM2.5 and PM10, which are tiny particles that have a significant impact on human health and the environment.

Ozone, a gas that can negatively affect human health and plant growth near ground level.

Sulphur dioxide, a pollutant produced by the burning of fossil fuels that is harmful to the environment and human health.

Carbon monoxide, a colourless, odourless and toxic gas that can cause serious health problems.

Hydrogen sulphide, a toxic gas with a strong odour that is harmful to human health.

Nitrogen oxides, which include a variety of compounds that can form acid rain and photochemical smog in the atmosphere.

Volatile organic compounds (VOCs), which can be involved in the formation of ozone and fine particulate matter in the atmosphere.

Total suspended particulate matter (TSP), which refers to all solid and liquid particles suspended in the air.

In addition to these, the monitoring stations are also responsible for measuring a range of meteorological parameters such as temperature, humidity and wind speed, which are equally crucial to understanding and predicting changes in air quality.

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