New air quality standards
2014/2/17 Viewers:
1. The new air quality standards has made more strict rules?
With the old "ambient air quality standard" (GB3096-1996), compared to the air quality standard requires new standards on the one hand, improve the function, will be three types of area into two categories area, cancelled the level 3 standards;On the other hand also tightened the pollutant control requirements, added PM2.5 annual average 8 hours, 24-hour average concentration limit and ozone average concentration limit, and tighten the NO2 concentration of pollutants such as limit.Air quality in the new standard concentration limit six basic projects can be found in the table 2.
2. What's on the air quality in implementing the new standard time requirement?
In order to ensure the timely implementation of the air quality around the new standard, environmental protection department issued on the implementation of environmental air quality standard (GB 3095-2012) notice, make clear a regulation on January 1, 2016 phased implementation the new standard in the country.Xiamen early in 2013, according to the new standard requirements to carry out the monitoring work and try to release.But has yet to implement the new standard, so the air quality statistics still continue to use the API until 2016.
With the old "ambient air quality standard" (GB3096-1996), compared to the air quality standard requires new standards on the one hand, improve the function, will be three types of area into two categories area, cancelled the level 3 standards;On the other hand also tightened the pollutant control requirements, added PM2.5 annual average 8 hours, 24-hour average concentration limit and ozone average concentration limit, and tighten the NO2 concentration of pollutants such as limit.Air quality in the new standard concentration limit six basic projects can be found in the table 2.
| Table 2 air pollutants concentration limit of the project | ||||||
| The serial number | Pollutants project | The average time | Concentration limit | unit | ||
| Level 1 [best] | The secondary [good] | |||||
| 1 | Sulfur dioxide (SO2) | The annual average | 20 | 60 | Mu g/m3 | |
| 24 hours a day on average | 50 | 150 | ||||
| 1 hour on average | 150 | 500 | ||||
| 2 | Nitrogen dioxide (NO2) | The annual average | 40 | 40 | ||
| 24 hours a day on average | 80 | 80 | ||||
| 1 hour on average | 200 | 200 | ||||
| 3 | Carbon monoxide (CO) | 24 hours a day on average | 4 | 4 | mg/m3 | |
| 1 hour on average | 10 | 10 | ||||
| 4 | Ozone (O3) | Diurnal average 8 hours | 100 | 160 | Mu g/m3 | |
| 1 hour on average | 160 | 200 | ||||
| 5 | PM10 | The annual average | 40 | 70 | ||
| 24 hours a day on average | 50 | 150 | ||||
| 6 | PM2.5 | The annual average | 15 | 35 | ||
| 24 hours a day on average | 35 | 75 | ||||
2. What's on the air quality in implementing the new standard time requirement?
In order to ensure the timely implementation of the air quality around the new standard, environmental protection department issued on the implementation of environmental air quality standard (GB 3095-2012) notice, make clear a regulation on January 1, 2016 phased implementation the new standard in the country.Xiamen early in 2013, according to the new standard requirements to carry out the monitoring work and try to release.But has yet to implement the new standard, so the air quality statistics still continue to use the API until 2016.
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