Yesterday, city air does reported whole town of past a week and each town market (garden area) main contaminant chroma and the air quality state since this year. Last week (came 7 days on April 1) , quality of whole town air gives now to fall, air quality aggregate index is 4.55, PM2.5 chroma is 40 microgramme / stere, exceed secondary standard of national air quality 35 microgramme / stere 14.3% ; Ozone concentration achieves 159 microgramme / stere, approach secondary standard of national air quality to be worth 160 microgramme / stere. Two main contaminant all exceed PM2.5 of 13 sites that monitor, ozone mark, situation of job of whole town air pollution prevention and cure still nots allow hopeful.
The data that monitor shows, in 7 days when monitor effectively last week, quality of whole town air actors or actress 1 day, fine 5 spend contaminative weather day, gently (ozone exceeds bid) 1 day, what PM2.5 and ozone are main contaminant is compound model pollution dash forward show. City air does express, conditional pole goes against the atmosphere of little last week wind, little rain of contaminant diffuse. Pure Brightness holiday, industry discharges apparent reductive circumstance to fall, PM2.5 and ozonic chroma still are in perch, this shows motor vehicle tail gas and dirt of construction site raise pollute air badly.
In 36 sites of whole town that monitor, chroma of 19 sites PM2.5 exceeds concentration of ozone of 28 mark, sites to exceed bid, include Guan city pear plain, east castellan hill, south city yuan mountain, south the city is made the same score on the west, east 5 countries accuse city Shi Jing two main contaminant all exceed 13 monitoring point of the site mark. Concentration of ozone of Xie Gang, unexpected drop is as high as 218 microgramme respectively / stere, 215 microgramme / stere, reside the ozone that does not fall high to bring about two sites directly what appear 3 days to mix 4 days respectively inside a week is light spend contaminative weather.
City air does concerned controller to emphasize, prevention and cure of our city air pollution works cannot " rely on a day to have a meal " , must study air pollution matter in the round, especially trend of change of the origin of grain content and VOCs, smooth peak value and carry a channel, ensure grind ahead of schedule the contaminative weather that sentences a likelihood to appear, make effective below adverse weather condition canal accuse measure, reduce discharge capacity of main pollution source ahead of schedule. From long-term look, want to develop public traffic energetically, education citizen green gives a consciousness, reduce the contaminant that the mobile source such as motor vehicle brings.
(reporter Zhou Guiqing)
