Size Distribution of Particulate Matter in Different Areas of Khon Kaen Province
Keywords:
PM10, PM2.5, Size distribution of particulate matterAbstract
The objective of this research was to study the quantity of PM10, PM2.5 and the differences of distribution size of particulate matter that affects the respiratory system from overcrowded agricultural area, traffic area, market area in Khon Kaen province. The data was collected by ACI 8 stage. The result showed that the area that had highest particulate matter quantity in winter was agricultural area. The average of PM10 and PM2.5 represents respectively of 106.66±7.80 and 42.28±3.93 µg./m3 In summer, the highest particulate matter quantity was also in agricultural area with the average of 92.87±9.75 and 45.75±7.60 µg./m3 respectively. statistical analysis independent t-test indicated that there was no significantly different (P-value>0.05). and One-way ANOVA revealed that PM10 in winter was significantly different in all 3 areas (p-value <0.05). It was found that agriculture area in both winter and summer have the same size distribution of particulate matter. The mostly found was particulate matter with a size >4.7 microns, representing 46.74 and 39.53 percent respectively. It was also found that particulate matter with a size >4.7 microns represent 42.37 and 40.14 percent respectively in overcrowded traffic area in both winter and summer. The particulate matter with a size >4.7 microns can be accumulated in the nose and throat of human. Differently, the particulate matter that found in the market area in both winter and summer is <1.1 microns with representing respectively only 37.51 and 36.88 percent. The particulate matter with a size <1.1 microns can be accumulated in pulmonary alveoli.
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