This study aimed to investigate the characteristics of odor-causing substances in Yeosu national industrial complex, which is designated as an “Odor management Area,” in 2019 and the surrounding area. The sampling sites were divided into three areas: five sites within the industrial complex (Management area), one site within the borders of the complex (Boundary area), and two sites within residential areas (Affected area) affected by odors. The odor compounds were collected from March to September at dawn, daytime, and night. The analytical items were meteorological data, complex odor, legally-designated 22 odor compounds and other VOCs. Complex odor was exceeded on the limit three occasions at two sites in the management area. Ammonia, two types of sulfides, three types of aldehydes, and five VOCs were detected to be within the emission standards. Ammonia was the most frequently detected compounds. Aldehydes and sulfur compounds made a relatively high contribution to the level of odors. Therefore, aldehydes and sulfur compounds should be reduced first in order to prevent odors from occurring.

This study was conducted to determine distribution and characteristics of odors in Yeo-su industrial complex. The sampling of odor compounds was performed from may to september in 2009, twice a month, both morning and afternoon. The analytical items were meteorological data, complex odor, legally-designated 17 odor compounds. Complex odor and 17 odor compounds in Yeo-su industrial complex were suitable in emmission standard(s). The major odor compounds were appeared to be Hydrogen sulfide, Methyl mercaptan, Trimethyl amine, Ammonia. So, the industrial complex in Yeo-su was influenced by the Nitrogen and Sulfide odor substances. The distribution of concentration was investigated Ammonia＞ Stylene＞ Xylene＞ Acetaldehyde in order. We suggest that VOCs, causing the odor problem in Yeo-su, should be mutually controlled with Hazardous Air Monitoring Network.