Abstract
PM2.5 is a big issue as it is considerably more harmful than other sizes of particulate matter. World Health Organization (WHO) recommends 25 μg m−3 as the daily average concentration, and 10 μg m−3 per day as an annual average. To keep up with global trends, it is first necessary to understand the current status and characteristics of PM2.5 concentrations in Korea. Using the PM2.5 data measured by Seoul Metropolitan City from November 2005 to March 2012, the author analyzed its statistical characteristics and correlations with other air pollutants. For the time period from 2005 to 2012, the annual average concentration of PM2.5 was 27 μg m−3, three times the WHO standard. Also, the daily average PM2.5 concentration of 215 days per year also exceeded the WHO standard. However, the number days exceeding the Korean daily average standard of 50 μg m−3 to be enacted in 2014 was only three. PM2.5 concentration had a high correlation (r = 0.84) with PM10, and also showed high correlations with gaseous pollutants, such as SO2, NO2, and CO, but not O3. This study suggests that the Korean government should strengthen their standard to match the criteria used by WHO.
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Lee, M. An analysis on the concentration characteristics of PM2.5 in Seoul, Korea from 2005 to 2012. Asia-Pacific J Atmos Sci 50 (Suppl 1), 585–594 (2014). https://doi.org/10.1007/s13143-014-0048-z
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DOI: https://doi.org/10.1007/s13143-014-0048-z