When it evaluates the odor actual investigation of the odor control restricts in Gyeonggi-do during 2004 and 2009 year, The complex odor at 4 industrial complexes was appeared gradually to be decreased after 2006 year, Excess cases of standard in Banwol, Sihwa, Banwol plating, and Asan industrial complexes were 9 times, 9times, one times and one times respectively, Excess odor substances changed every year in Sihwa and Banwol industrial complex, but Hydrogen sulfide is exceeded odor emission standards in 2006, 2007, 2009 year continually. On the other hand, the cases that complex odor and specified odor substances were exceeded simultaneously were 40.9% of total, and the rest of cases were estimated as to be caused by the other appointment compounds or the lack of quality control. The corelation (R²) of complex odor concentration and the number of resident complaint was 0.434 at Sihwa industrial complex, 0.878 at Banwol industrial complex and 0.434 at Asan industrial complex. also, corelation (R²) of complex odor and data of odor auto monitoring was 0.145 at Sihwa industrial complex and 0.964 at Banwol industrial complex. therefore, Sihwa industrial complex is partially demanded the check of sampling site and the quality control on the complex odor.

The continuous odor monitoring system has an important role of grasping odor of weak time zone, when is difficult in direct sampling, by measuring the odorous compounds continuously for 24 hrs a day. However, the operation of the continuous odor monitoring system do not mean only a great number of analysis data being producted continuously. But also, in order to obtain high quality data, the analyzer is maintained under the optimum conditions and suitable QA/QC is necessary. The analysis data could be used as an alternative for understanding odor characteristics, odor causes, and odor reduction plan, and thus they should have a role of explaining the affection area, tracking" odor in conjunction with the odor dispersion models. Since the designated odor components in Korea Odor Prevention Act cannot reflect on all types of odorous compounds, additional compounds causing the odor problem should be analyze to comprehensive monitoring.

The purpose of this research is to evaluate the odor exhaust characteristics of Sihwa and Banwol industrial complex during one year in 2007 by the automatic odor analyzer. As the continuous monitoring results on the 54 odor items, the highest average concentrations in two complexes were p-diethylbenzene, ammonia, toluene and methylethylketone. The items haven highest contribution rate in Sihwa and Banwol industrial complex were Dimethyl sulfide, i-Valerie acid, i-Valer aldehyde, Valerie acid, Trimethylamine and Etylmercaptan, Hydrogen sulfide, Dimethyl sulfide, Formaldehyde, Trimethylamine. When the odor concentrations converted into the total odor intensity, The percentages of hour data appeared over 3 degree of odor intensity were 0.5% (40 hr) in Sihwa station and 3.0% (210 hr) in Banwol station, respectively. Over 1 degree of odor intensity which is odor threshold value also were 68.3% in sihwa station and 82.5% in Banwol station, respectively. The highest monthly odor intensity was shown in January and February. Therefore, continuous monitoring system for odor compounds through the odor automatic station seems to be the most efficient method for investigating odor exhaust characteristics.