MEE Published the Revision of Ambient Air Quality Standard

On 15 August 2018, China’s Ministry of Ecology and Environment (MEE) published the revised GB30965-2012 Ambient Air Quality Standard (??????????) after consultation ended on 26 July. Compared to the draft version, the promulgated revision only modifies article 3.14 as below:


Before modification

After modification


Standard state refers to the state when the temperature is273K and the pressure is 101.325kpa.

The concentration of pollutants in this standard is calculatedunder the standard state.

The reference state refers to the state when the atmospherictemperature is 298.15K, and the atmospheric pressure is 1013.25hpa.

The concentration of gaseous pollutants1 in thisstandard is the concentration in the reference state.

The concentration of PM (particle size≤10 μm),PM(particle size≤2.5 μm ), total suspended PM and its componentslead, benzo[a]pyrene.,etc. are measured at atmospheric temperature andpressure.

Gaseous pollutants: SO2, NO2, CO, O3, Oxynitride

The revision will be implemented from 1 September 2018. Next MEE will carry out the monitoring state transition and upgrade 1436 pieces of equipment in national monitoring stations. It is expected to publish the revised monitoring data on 1 September 2018. MEE will help guide local monitoring spots to complete the state transition and publish the relevant monitoring data form Jan 1st, 2019.

Chemlinked, 17 August 2018 ;