45 pieces of key urban air quality are not up

45 pieces of key urban air quality are not up to standard of
It is reported ' Reporter Zhang Hao) " key urban environment air quality state of environmental protection " and announcement of " water environmental quality state of key basin " are apparent in the first half of 2011 years released recently for environmental protection department Show, in the first half of this year, air quality of 45 cities such as Beijing, Taiyuan, Tangshan, An'shan, Changchun exceed standard, among them the air quality in Urumchi is the poorest; 7 great river systems still belong to slight pollution overallly, among them Haihe River is the heaviest in pollution, it is the serious pollution, only the water quality of the Changjiang River and the Pearl River is good.

The statistics show, the average density of sulfur dioxide of 113 key cities of environmental protection in the whole country drops by 2.2% compared with last first half of the year; The NO2 average density rises by 5.7%; The average density of the inhalable particles is fair. The air quality of 45 cities exceeds standard, accounts for 39.8% in 113 key cities. The inhalable particles are the main pollutant causing the urban air pollution.

The announcement reveals, in the first half of this year, the water environment of key basin of our country is mainly shown as ammonia nitrogen, permanganate index and 5-day BOD,etc. exceed standard, 19 the intersection of the earth's surface and land that abounds in rivers and lakes accuse of section appear 31 the intersection of heavy metal and phenomenon of exceeding standard altogether, Haihe River Basin heavy metal exceed standard phenomenon to be most serious among them, the section accounts for 36.8% that always exceeds standard in the section to exceed standard; The heavy metal exceeding standard is mainly mercury, there are 23 times.



45 pieces of key urban air quality are not up to standard of