Primary Source Apportionment of PM2.5 in the National Steel Industrial Complex- Implication of PMF Model (PART I)

The purpose of this study is to analyze PM2.5 in the Gwangyang National Industrial Complex to present the characteristics of regional PM2.5 and analyze emission sources. As a result, the concentration of PM2.5 during the observation period was presented as 24.28 & mu;g/m3. The major components of PM2.5 were identified as organic carbon (OC), elemental carbon (EC), water soluble ions, heavy metals, etc. Metal Oxide and Fe were higher in winter than in summer. Fe showed high concentrations during the winter daytime, indicating that it was due to local industrial activity. According to Positive Matrix Factorization analysis, the sources of PM2.5 in the Gwangyang National Industrial Complex were classified as (1) OCEC & Fe, (2) Soil Dust, (3) Secondary nitrate, (4) Secondary Sulfate & trace elements, and (5) Sea salt. The contribution of each source was OCEC & Fe 29%, Soil Dust 10%, Secondary nitrate 35%, Secondary sulfate & trace elements 23%, Sea salt 3%. The results of the study can be used for policies and improvements in the steel industry and environmental improvement in order to reduce fine dust in the Gwangyang National Industrial Complex.