Ministry of environmental protection plans to revise air detection standards or issue them by the end of the year

Release time：

2019-11-20

At the end of August,the executive meeting of the Ministry of environmental protection reported the revision of the ambient air quality standard.
According to the revised version of the standard,which was asked for public opinions at the beginning of this year,the monitoring value of ozone for 8 hours will be increased;PM2.5 inhalable particulate matter has not been listed in the new standard,but it has started to be the reference value of various indicators.This is the two most controversial indicators of air quality in China.
It is understood that the revision is still in the stage of soliciting opinions,and the new standard may finally be issued at the end of the year.
Broad standards protect public health
In 1982,China formulated the air environment quality standard,and there are only six pollutant projects.In 1996,it was revised for the first time,renamed"ambient air quality standard",and the number of pollutant projects was expanded to 10.Since then,the Ministry of environmental protection has made partial modifications in 2000,cancelled the indicators of nitrogen oxides,and relaxed the standards of nitrogen dioxide and ozone.
One of the most concerned issues in this revision is the addition of the 8-hour average ozone concentration limit.
The air quality standard of ozone,which is mainly based on the maximum concentration limit for 8 hours in a row,has become the trend of the development of ozone air quality in the world,and the concentration limit for a short time can not meet the needs of environmental management,wrote in the instructions for the preparation of ambient air quality standard(Draft for comments)issued by the Ministry of environmental protection(hereinafter referred to as the instructions).
In this revision,the secondary standard of 8-hour average concentration limit of ozone is set as 160μg/m3.Although the concentration limit is relatively wide in the world,it can basically protect public health.

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