Assessment of air quality indices in Seoul region by land use type

摘要

As a response to the need to improve well-being and health of human, various air quality indices were developed. Many air quality indices are related to the impact on human beings. The study was based on air pollution data from three different sites with different land use types (residential,commercial and industrial area) in Seoul/Korea for the period 2006-2008. The two air quality indices DAQx (Daily Air Quality Index), developed in Germany, and CAI (Comprehensive Air-Quality Index), developed in Korea, were used. Both indices refer two the impacts of short-term pollution for citizens. Results show that the maximum frequency of DAQx was recorded in the class 5 (poor air quality) at all sites (residential area: 41%, commercial area: 40%, industrial area:43%). However, the frequency of DAQx class 6 (very poor air quality) at industrial area was the highest among three kinds of sites (residential area: 9%, commercial area: 10%, industrial area: 11%). It is known that the dominant impact factors which determine DAQx were arranged with PM_(10), NO_2, O_3. In contrast, CAI had its the peak frequency of all sites for the same period in class 2 (satisfying air quality) of CAI standard.