Objectives To understand the status about the cognition of air pollutants PM2.5 in residents in Zhongshan city, and to provide scientific basis for the prevention and control of air pollution.
Methods Two hundred respondents was selected from the clients visiting Zhongshan CDC and the survey was conducted by questionnaire and the form was filled face to face.
Results 95.0%of respondents knew the meaning of indoor air pollution.83.0%of respondents did not hear about PM2.5 or did not know what PM2.5 really was.The cognition on the outside source of PM2.5 was high and the cognition on the indoor source of PM2.5 was low.The awareness on the health hazard of PM2.5 in aggravating respiratory diseases was high (44%); but the awareness on no any ability for human to filter and block PM2.5 was low (15%).The harm of PM2.5 was not known in 34.5%of respondents, the current indoor air quality standard was not known in 79.5%of respondents, and the relevant laws were not known in 94.5% of respondents.In 68%of respondents, the knowledge on the laws relevant to air pollution was from television.
Conclusions Most of respondents surveyed in Zhongshan did not know the harm of PM2.5, the propagation on the knowledge relevant to PM2.5 should be strengthened, and the best media was television.
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