Air pollution analysis based on PCA and entropy weight method

With the rapid development of industrial engineering, more and more environmental problems have appeared. Atmospheric pollution has been a serious problem in modern society, and in this study, Principal Component Analysis (PCA) algorithm and Entropy weight method are employed to find the main pollutants in air. And Nanjing is applied as an example to analyze the pollutant, the result shows BaP and Acy is the biggest source of pollution.