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This investigation: monitoring of objects what's the difference?

Du Shaozhong: distribute digital means is not the same, they are publishing the concentration, we publish an index, there are great differences between the two, in ways that are conversion between index and concentration. Can't just use numbers to compare, you should see numbers reflect what content. Even the United States Embassy is the concentration of the monitoring, the value is large. As for why, we do not have monitoring their devices. If we and the United States Embassy monitoring equipment, monitoring method, monitoring standards, the reference standard for comparison, we can do it. Many times we go through communication, they don't want to take the device than with us.

In addition, the monitoring of contaminants is different, we are monitoring particle size in the 10 micron (including) the following particles, PM2.5 monitoring provided for in the way of the Ministry of environmental protection, PM2.5 should be accounted for half of PM10 particulate matter. So their amount of PM2.5 should not exceed PM10 we published. Says United States Embassy of data released should go further verification.

This paper surveys: United States Embassy monitored object is below PM2.5 particles, objects are of domestic monitoring of PM10 particles that PM10 may enter the human upper respiratory tract, respiratory diseases compare closely related with the public. But in reality the PM2.5 particles due to the volume small, on the human health effects than PM10. The World Health Organization information announced that PM2.5 will also increase the risk of death. Why don't we go to PM2.5 data are published, there is no ability to monitor do?

Du Shaozhong: PM100 is total suspended particulate matter, it seems to be big brick, PM 10 is a small brick, PM2.5 is small stone blocks, PM1 is a smaller stone blocks. Measure of PM10 is 150 mg/m, for example, the corresponding concentration of 150 mg/m 100API (API), index and concentration of the standard.

For PM2.5, we have the ability and equipment monitoring, we also have the monitoring data, but we can't feel free to publish. As air quality and environmental quality monitoring is a very serious matter, published by the society, to the general public to refer to important information, will be responsible for, to comply with the provisions of the country. Not Beijing data, Shanghai published another, two data impossible than the right, we have to come up with qualified data.

"Pollution level or Division of a dozen years ago"

This paper surveys: heavy fog in Beijing for several days, the community felt that air quality is poor, what kind of relationship between air pollution and fog?

Du Shaozhong: fog is not pollution, except that it and pollutant combination at a time, before it would have an impact on air quality. Especially during autumn and winter seasons, prone to static, such as wind, temperature inversion against the pollutant dispersion of meteorological conditions so that when the fog appears, are easier to create an air pollution. Fog causes the easy diffusion of pollutants, contaminants will also extend the mist of time.

Just past the fog, the air quality in three Yi、Sanji second stay for several days, didn't become grade four or five levels of pollution, which shows the past few years, emissions levels falling.

We are also not out of the live at the mercy of the elements of the passive situation, but also to continue its efforts to increase the intensity of emissions, coal-burning pollution reduction, motor vehicle pollution, dust pollution and industrial pollution. This requires successful government organizations, and also the wider public. Now the progress made, and would like to thank the efforts of the people.

This paper surveys over the Internet, many Web users question the monitoring results for slightly polluted haze but released all over, is the different monitoring tools, or standard different?

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