The objective of this research was to investigate the removal efficiencies of VOCs and odors with newly developed biofilter which was designed to sustain the biofilm constantly on the packed media. Initially, four types of media, for example, fiber, activated carbon, ceramic and the mixture of activated carbon and ceramic(A/C mixture), were used for packed materials of biofilter. When ethylalcohol was selected as a test gas for media efficiency, fiber and A/C mixture had better removal efficiencies of ethylalcohol than others. Removal efficiencies for acetaldehyde, ethylalcohol, butylalcohol, ethylacetate and diethylamine in biofilter with fiber and A/C mixture as packed media were increased as the residence time increased. Butylalcohol, especially, showed the maximum removal efficiency among all used VOCs and odors. In case of ethylacetate, the difference of removal efficiencies between low and high residence times was wide remarkably.

A three-dimensional ecological model (EMT-3D) was applied to Nonylphenol in Tokyo Bay. EMT-3D was calibrated with data obtained in the study area. The simulated results of dissolved Nonylphenol were in good agreement with the observed values, with a correlation coefficient(R) of 0.7707 and a coefficient of determination (R2) of 0.5940. The results of sensitivity analysis showed that biodegradation rate and bioconcentration factor are most important factors for dissolved Nonylphenol and Nonylphenol in phytoplankton, respectively. In the case of Nonylphenol in particulate organic carbon, biodegradation rate and partition coefficient were important factors. Therefore, the parameters must be carefully considered in the modeling. The mass balance results showed that standing stocks of Nonylphenol in water, in particulate organic carbon and in phytoplankton are 8.60×105 g, 2.19×102 g and 3.78×100 g, respectively. With respect to the flux of dissolved Nonylphenol, biodegradation in the water column, effluent to the open sea and partition to particulate organic carbon were 6.02×103 g/day, 6.02×102 g/day and 1.02×101 g/ day, respectively.

Scanning electron microscopy / energy dispersive X-ray analyzer(SEM/EDX) has played an important role for evaluation the source of atmospheric particle because it is a powerful tool for characterizing individual particles. The SEM/EDX system provides various physical parameters like optical diameter, as well as chemical information for a particle-by-particle basis. The purpose of the study was to classify individual particle emitted from the point sources based on clustering analysis and physico-chemical analysis by SEM/EDX. The total of 490 individual particle were analyzed at 8 point sources including coal-fired power plant, incinerator, B-C oil boiler, and metal manufacturing industry. The main components were Si and Al in the coal-fired power plant, Cl and Na in the domestic waste Incinerator, S in the B-C oil boiler and S and Fe in the metal manufactory industry, respectively.

황금의 천연항균제 개발을 위하여 황금의 일반성분 및 미량물질들을 분석하였으며 항균활성물질의 검색을 위하여 LC-MS를 이용하였고 검색되어진 성분들에 대해서는 항균력 비교시험을 하였으며 항균활성물질들에 대해서는 HPLC를 이용하여 그 양을 정량하였다. 황금의 일반성분으로는 수분 , 탄수화물 , 조회분 , 조단백질 및 조지방 이었고 미량성분에 있어서는 칼륨 12,050mg/kg과 마그네슘4,296 mg/kg의 함량이 현저하게 높았다. LC-MS

가시오갈피 유식물체의 함유성분을 밝히고, 분리된 화합물들을 대상으로 DPPH를 이용한 항산화활성을 측정하여 대체 약용자원으로서의 사용 가능성을 검토하기 위하여 가시오갈피 유식물체를 MeOH로 추출, 농축하고 Hexane, EtOAc 및 BuOH순으로 분획하여 얻은 각각의 분획을 대상으로 성분연구에 착수하였다. 각종 column chromatography를 이용하여 성분을 분리한 결과 EtOAc분획으로부터 1종의 화합물을 분리하였고, BuOH 분획으로부터 1종의 화합물을 분리하였다. 이들 화합물에 대하여 UV, IR, Mass, 1H-NMR 및 13C-NMR spectrum과 문헌치를 대조하여 그 구조를 동정한 결과그 구조는 각각 Chlorogenic acld (1)과 1,4-di-O-caffeoyl-quinic acid (2)이였다. DPPH (1,1-diphenyl-2-picry-hydrazyl) free radical scavenging activity를 이용하여 측정한 항산화활성의 RC50 value는 각각 1.2 및 0.4 μg/ml였다. 이상의 결과로부터 가시오갈피 유식물체 (Eleutherococcus senticosus Max.)는 천연 항산화제로서의 개발가능성이 높다고 사료된다.

사람들의 생명연장과 각종 만성질환, 악성종양 등의 증가에 따른 우수한 항생제의 계속적인 개발로 많은 생명을 구할 수 있게 되었지만 반면 항생제를 지나치게 사용하여 이에 많은 부작용이 생기고 내성균도 많아지면서 중증감염이 증가되어 여러 가지의 새로운 문제점에 직면하게 되었다. 안전성이 있는 새로운 항균물질의 개발 목적으로 예비 검색 결과 선택된 독활을 추출하여 컬럼 크로마토그래피를 반복 수행한 결과 2종의 항균 효과를 보여주는 화합물을 분리하였다 이들 화합물은 물리 화학적 성질 및 분광학적 분석을 통하여 화합물 1은 mp가 166~167℃인 백색침상, C20H30O2의 분자식을 갖는 (-)-pimara-8(14), 15-dien-19-oic acid 즉, continentalic acld으로 동정하였으며, 화합물 2는 mp가 164~165℃인 백색침상, C29H48O의 분자식을 갖는 (24E)-stigmasta-5, 22-dien-3β-ol, 즉 stigmasterol으로 동정하였으며 항균효과를 측정한 결과 두 화합물 모두 유의성 있는 결과를 나타내었으며, 이 중 화합물 1인 continentalic acid이 더욱 우수한 활성을 나타내었다. 특히 그람 양성균인 S. aureus에서 MIC가 7.8 μg/ml, E. faecalis에서는 MIC가 12.5 μg/ml에서 비교적 강한 억제 효과를 보였으며, 화합물 2에서는 S. aureus에서 MIC가 7.8 μg/ml, S. epidemidis에서는 MIC가 12.5 μg/ml에서 억제 효과를 보여 주었으나 그람 음성균에서 100 μg/ml 이상으로 항균활성이 측정되지 않았다. 따라서 화합물 1과 화합물 2는 그람 양성균에 대한 새로운 항균제로 개발에 유용한 화합물이 될 것으로 기대된다.

In this study, we try to determine the distributive property in southwest coastal waters, such as Kwang-yang bay, Ka-mak bay, Yeo-ja bay, Wan-do, Hea-nam, Young-gwang, and Mok-po, using simultaneous analytical method of 310 chemicals. The results were detected tens of the organic pollutants in sampling sites, and the major chemicals detected were CH type chemicals such as aliphatic, polycyclic compounds and were CHN(O) type chemicals such as aromatic amines, nitro compounds. In particular, pesticides were mainly detected in summer, phenols and phthalate esters were not seasonal effect. Also, a number of aromatic chemicals were detected in Kwang-yang bay. From the results of this study, we confirmed that it is mainly contaminated in summer and the pesticide chemicals are the major pollutants in southwest coastal waters.