A fuzzy comprehensive evaluation of ambient air quality in Shijiazhuang from 2018 to 2022
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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