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RESULTS OF RESEARCH: 1. The air pollution objects inside and
outside the classroom change according to time: The change
tendency of CO inside and outside the classrooms is very close.
The students coming in and out of the classrooms during recess
cause a periodic up-and-down situation about the CO2
concentration inside the classrooms . The surrounding
environment and the activities of students affect the
PM10 concentration inside the classrooms. 2. Measurement
Results : The pollution situation of the air pollution
objects CO and CO2 measured inside the classrooms on the
spot is not regarded as serious, since the CO
concentration is all below 3ppm, and the CO2 concenetration is
below the standard of1,000ppm,around the range of 400-700 ppm.
But the PM10 pollution is more serious. Among the 52
classrooms being measured, there are 25 of them whose PM10
pollution exceeds the limited value of 0.15 mg/m3. 3. Results
of simulation measurement in classrooms : There is a closer
relativity between the CO concentration indoors and CO
concentration outdoors. And a closer relativity is also found
between CO2 and the open area, people indoors. But the
difference of chalk and dust concentration is inversely
proportional to the distance from the blackboard. 4.
Interrelation among the affecting factors of the
concentration of objects polluting the air inside the
classrooms. There exists a higher inverse ratio relativity
between air changing volume and CO2 concentration. And a
higher inverse ratio relativity is also found between CO2
density and the change of open area. There is a close
relativity between PM10 and number of storeys.
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