Study of ambient air particulates pollutants near Taichung airport sampling site in central Taiwan.

This study monitored the atmospheric pollutants at Taichung airport (TA) sampling site during September to December of 2005 near Taiwan Strait in central Taiwan. The distributions of the particle concentrations between the TSP, coarse and fine were also displayed at TA sampling site. Analysis the average percentage of various kinds of metallic elements, the data obtained here indicated that the average percentage concentrations of metallic elements Fe and Mg were higher in fine particulate than that of the coarse particulate at Taichung airport sampling site. These foundry factories were by the TA sampling site was the possible reason responsible for this result. In addition, by a non-parametric (Spearman) correlation analysis, the results indicated that Fe, Mn and Pb have high correlation coefficients of metallic elements in different particle size. The results indicate that the airport pollutants might come from similar pollutant sources at this airport sampling site. In addition, high correlation coefficients of non-airport pollutants were observed on the ionic species of SO(4)(2-), NH(4)(+) and K(+). The r(sp) correlate values between closed to r(sp)=0.7 and 0.9 at different particles size mode. Besides, the ionic Ca(2+) has high negative values (r(sp)=-0.66, -0.66 and 0.61) with the increasing of the temperature, relative humidity and wind speed, respectively at fine particle size.