Monitoring data at stations in residential areas such as Da Nang station (Da Nang City.) And coastal cities such as station station Phu Lien (Hai Phong), shows average annual PM10 fluctuated around the threshold. However, at this station, there are times the 24-hour average PM10 exceeds a certain level lot. Pollution of PM10 standard in an urban area is very different. Chart 8 shows the locations affected by a variety of sources such as waste station at the University of Hanoi Construction PM10 annual average value is much higher than the figures in the quiet residential area of Hanoi, because construction University school station near the main roads and surrounded by many homes are built and renovated. Chart 9 shows the annual average PM10 concentration along roads in much higher than in residential areas.
đang được dịch, vui lòng đợi..
