Beijing News (Reporter Kim Yu) yesterday, the Beijing Municipal Environmental Protection Monitoring Center published for the first time the carbon monoxide and ozone concentration data, both with Beijing’s PM2.5 data from Chegongzhuang Station, bringing the Beijing has been made public six atmospheric pollutants in the ambient air quality standards. Indicators yesterday
Municipal Environmental Protection Monitoring Center Air quality real-time site, the new PM2.5 concentration, but also quietly. two new elements: carbon monoxide test to monitor the operation and the ozone test to monitor the operation.
carbon monoxide data show that at 21:00 on the the 11th at 8:00 p.m. on the 12th, the carbon monoxide 24 hours a mean of 2.2 mg/m 3, the hours the highest concentration of 3.3 mg/cubic meter, according to the new GB, carbon monoxide, the daily average of 4.0 mg/cubic meter, hour concentration of 10 mg/m standard. Yesterday are the state standards.
ozone and PM2.5 are closely related
real-time ozone concentration until 20:00, 8 hour average of 121 micrograms/cubic meter. Because the health effects of ozone on the human body can be present within 8 hours, the ozone mean standard is 8 hours, instead of PM2.5 in 24 hours. In accordance with national standards, ozone maximum 8-hour concentration limits of 160 micrograms/cubic meter, yesterday, the ozone concentration does not exceed the standard.
and particulate matter, ozone there a limit per hour limits for the concentration, in accordance with our standards, ozone day 1 hour concentration limit of 200 micrograms/cubic meter, the concentration of ozone hours yesterday, there is no exceeded.
new two pollutants, ozone and PM2.5 is closely related to high ozone prone to haze days of PM2.5 concentration is also high.
monitoring data only from Chegongzhuang
According to the Environment Bulletin, 2010, the annual air in the presence of ozone Council exceeded the phenomenon, the concentration of ozone-hour value of each monitoring point exceeding 50 hours -318 hours, a total of 70 days. In 2010, the average annual concentration of the city’s carbon monoxide value of 1.5 mg/cubic meter, and meet national standards.
So far, Beijing announced a new version of “ambient air quality standards in all six atmospheric pollutants. Among them, the traditional “old three pollutants, nitrogen dioxide, sulfur dioxide and respirable particulate matter (PM10) is carried out both in the city within specifications follow the old version of ambient air quality standards and monitoring, the city’s 27 sub-stations of data collection, on behalf of the city average.
new carbon monoxide and ozone from the Monitoring Centre on Integrated Observing Laboratory, only on behalf of the Chegongzhuang along the environmental monitoring center called “test run to monitor.
carbon monoxide (CO)
[identity] is the incomplete combustion of carbon or carbon compounds produced an odorless, colorless gas .
source] the main source of the internal combustion engine exhaust, followed by the burning of fossil fuels in the boiler.
[affect] a colorless, odorless, non-irritating, toxic, almost insoluble in water, difficult to produce a chemical reaction with other substances in the air. Can cause harm to animal and human nervous system and cardiovascular system, acute carbon monoxide poisoning caused by a reversible short-term nerve damage and severe neurological harm.
[identity] is a trace reactive gases in the Earth’s atmosphere, ambient temperature and pressure colorless, special smell the odor, with a strong oxidation .
[Source] most of the tropospheric ozone is nature (plant emissions), and human activities.
[affect] When present in the stratosphere helps protect life on Earth from harmful ultraviolet rays, and when near the Earth’s surface, is a component of urban photochemical smog. harmful effects on vegetation and human impact on tracheal responses and lung function.
new three pollutant index
March this year, the ministry introduced a new version of “ambient air quality standards, the new three item indicators of pollutants: carbon monoxide, ozone 8-hour concentration and fine particulate matter (PM2.5).
throughout the concentration of ozone hours had also monitoring, but not included in the daily air quality and forecasting, and therefore not open.
According to the Ministry of Environmental Protection requirements, Beijing, Tianjin, the Yangtze River Delta, Pearl River Delta and other air pollution prevention in key areas as well as municipalities and the provincial capital city, this year introduced a new version of the ambient air quality standards. In addition to the completion of a monitoring network, real-time pollutant concentration data should be available to the public.
Beijing has started air quality monitoring network construction plan before the end of all completed.the share: welcome the , comment I want to Comments microblogging Recommend | hot microblogging today