Abstract:

Principal component analysis (PCA) and absolutely principal component analysis (APCA) were used to qualitatively analyze the data of PM₁₀ samples from three periods of 2009 to 2010 at Longyan environmental monitoring station, Longyan teachers college, Minxi university and Longyan university for the purpose to obtain the different source apportionments and contributions of PM₁₀. The results show that on the city’s perspective, the main sources of PM₁₀ in Longyan City are the second dust/coal dust, vehicle exhaust/road dust, soil dust, and waste incineration. In the view of each sampling point, the main sources of PM₁₀ at Longyan environmental monitoring station are vehicle exhaust/secondary dust, soil dust and road dust, the major sources of PM₁₀ at Longyan teachers college are soil dust, coal dust and vehicle exhaust/secondary dust, the main sources of PM₁₀ at Minxi university are secondary dust/coal dust, vehicle exhaust and waste incineration, the main source of PM₁₀ at Longyan university are secondary dust, vehicle exhaust/soil dust and coal dust.

Key words: PM₁₀, source apportionment, principal component analysis, absolutely principal component analysis