According to the Beijing News reported on February 24th, the Ministry of Environmental Protection Bulletin, 22 days, 39 key city of Beijing Tianjin Hebei and the surrounding area, there are 9 city of serious pollution, the previous day added 4, but the haze area than the previous day relative reduction. Environmental protection department said, 26 days ago, Beijing and central and South Hebei are still in severe and serious pollution.

At present, 161 city nationwide implementation of the new standards for air quality monitoring, 33 city appeared severe and more pollution in 22 days, including 10 city is serious pollution. The environmental protection department responsible person said, causes of the recent large-scale heavy air pollution is the main pollutant emission, high strength, large quantity of pollutant discharge; adverse weather conditions, the pollutant to diffusion.

Professor Pan Xiaochuan of Peking University School of Public Health says, human suffering heavy pollution for nearly 1 weeks, health hazard ratio 1 or 3 days of heavy pollution more, and will affect the chronic disease. Such as cardiovascular disease, chronic bronchitis, asthma, even young people tumor onset.

He advised against time we continuously exposed to outdoor for more than 30 minutes, the body can withstand within half an hour of the pollutant concentration maximum of about 3 times the average daily mean, "if the standard is 150 micrograms, half an hour to come into contact with concentration of 500 UG of value has no problem." He said. So as far as possible to shorten the residence time in the outdoors, even severe pollution occurs, indoor or outdoor air. In addition, to go out wearing masks also have certain effect, even if not stop PM2.5, can block the parts of the human body also harm PM10.

When the environmental protection department informed of these pollution more serious, the heart has been pulled into a group. Air pollution is a large number of exploitation of outdoor space for people, is the human in the future will be a long stay in the closed room? Step back and say, indoor air quality is relative to the severe pollution of outdoor would look a little better, which proved that the indoor air is not polluted? As many industries will be with dust and poisonous gas against the same, our interior to the control of pollution sources on industrial vacuum cleaner, and the indoor air quality reach the national standard, in order to ensure the work area of the health and safety related work, and those who did not use as industrial vacuum cleaner for this kind of environmental protection equipment area, the air quality can be guaranteed?

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