Fuzzy comprehensive model is applied for evaluation of air pollutants with SO2,NO2,CO,O3,PM10 and PM2.5 where elements of factors are set.The ambient air quality of Shijiazhuang city is eval-uated over past five years by establishing a fuzzy relationship matrix.Results show that the main air pollu-tants are O3,PM10 and PM2.5,and average concentration is greater than the secondary air standard.The weight of O3 is increasing yearly.So,attention should be paid to O3,and its precursor VOCs.Likewise,it shows a trend of getting better year by year.
Shijiazhuangambient air qualityfuzzy comprehensive evaluation methodpollutantmembership function
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