This study aims to understand the correlation between odor intensity and dilution factor using the Air Dilution Olfactory Method, which is suggested in the Standard method of Odor Compounds, by measuring odor intensity and dilution factor for 5 types of carbonyl compounds. For the measurement, 13 panel members were selected through a panel test, and odor intensity and dilution factor by substance produced from the selected panel were estimated. The estimation showed that the correlation of odor intensity with dilution factor for the 5 carbonyl compounds can be reasonably expressed by the equation [I = AㆍLog D + 0.5]. The result of this study is suggested to be used as a base data for research on measures to improve the regulation standards for complex odor concentration at a boundary site in operation, as well as a correlation between odor intensity, concentration and dilution factor for the designated odor substances, and their characteristics.

The objective of this study was to estimate characteristics of the carbonyl compounds at electronic industrial complex including residential area in Gumi. Also, the spatial analysis was applied to estimate spatial distribution of carbonyl compounds in study area. A total of 196 samples were collected from March 2007 to December 2007 by 2,4-DNPH cartridge and 5 carbonyl compounds such as acetaldehyde, propionaldehyde, butyl aldehyde, iso-valeraldehyde, and n-valeraldehyde were analyzed by HPLC. In this study, acetaldehyde showed average concentration was highest among carbonyl compounds during the sampling period. Average concentrations of carbonyl compound were similar between industrial complex and residential area and/or industrial area showed slightly higher than residential area. The spatial distribution and regional sources of pollution of each compound estimated by IDW spatial analysis method for spatial interpolation. Also, this study suggests that it is necessary to estimate odor compounds and to identify sources and apportion the ambient odor in order to establish effective odor control strategies and manage odor problem in industrial complex area.

The density characteristics of aldehydes in Kumi electronic Industrial Complex are measured in the summer and autumn in this study. Considering the characteristics of Kumi, five representative monitoring sites in Kumi are selected. According to fair Korean odor method, samples are collected and analyzed from July 26th, 2005 to October, 10th. Investigation objects include formaldehyde, acetaldehyde, propionaldehyde, butyraldehyde, iso-valeraldehyde, n-valeraldehyde. 40 samples in summer and 45 samples in autumn are measured and analyzed, respectively. The results show that the mean concentrations in residential area and industrial area are both obey the below sequence: acetaldehyde＞formaldehyde＞propionaldehyde＞butyraldehyde＞iso-valeraldehyde＞n-valeraldehyde. For acetaldehyde, its monitored concentration in industrial areas and residential areas close to industrial areas is higher than other areas. However, for formaldehyde, its concentration in the residential area 3 in tends to be higher than that in industrial areas. Based on seasons, concentrations in summer with long sunshine duration are higher than those in autumn. It can be seen that the density distribution of aldehyde in Kumi industrial complexes is closely related with the widely use of alcohol-type additives for automobiles and alcohol-type fuels. Meanwhile, most of the researches on aldehyde concentrate on capital areas or petrochemical industrial areas, taking the chance of odor prevention and control law implementing, the management scheme and reduction strategies on aldehyde ought to be carried out, which are also suitable to the enterprise characteristics in other industrial areas of this study.