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최금찬,성낙창,김장호,서정민,황성욱 동아대학교 환경문제연구소 1997 硏究報告 Vol.20 No.1
We get the conclusion of the ionic components of sample and the concentration of metal elements which is collected for acid composition substances using Dry Deposion, Dust Jar method at five points in Pusan. It appears higher ionic concentration from the last of February to the middle of May. It appears higher ionic concentration according to the increasing of collecting period in cation. It is higher ionic concentration according to the passing of the time at all sites in anion. The sum of cation equivalent concentration is higher than the sum of anion equivalent concentration in comparing ionic equivalent concentration. The equivalent concentration of SO₄^(2-), NO^(3-) that is gussed acid density is predominient in anion.
디젤자동차배출입자의 발생원동정 및 배출특성에 관한 연구
최금찬,조정구 동아대학교 환경문제연구소 1991 硏究報告 Vol.14 No.2
The purpose of this study is to characterize the emission of diesel vehicles. It had been measured the particle size distribution, particle concentrations, and ionic components through the emission for diesel vehicles. The particle emission of diesel vehicles may be changed to emission partterns accoring to fuel, combustion conditions, and ionic components.
대기 중 휘발성 유기화합물의 Advanced Technology에 대한 실험비교
최금찬,안병주,김석택,김찬훈,정창훈,서정민,유수영 동아대학교 환경문제연구소 2000 硏究報告 Vol.23 No.1
Nowaday, Advanced technology has been applied to organic destruction technologies that are alternatives to incineration. Plasma, photolysis, and Photocatalytic oxidation processes are an emerging advanced technologies for the abatement of volatile organic compounds(VOCs) in atmospheric pressure air streams, so we has been used these technologies for destruction of VOCs. TCE, Benzene, Toluene, and Xylene were selected as objective materials. We have been studied each process and found many types of reaction parameters which effect on treatment efficiency. So combination processes, which are plasma-photocatalytic oxidation process and photolysis-photocatalytic oxidation process, have been used to increase destruction efficiency. Analysis of above materials and byproducts was carried out by GC-FID.
최금찬,박출재,박정호,임경택 동아대학교 환경문제연구소 1995 硏究報告 Vol.18 No.1
Acid Rain has been investigated in Pusan Area. The range of pH indicated at 1st point to 4.05-7.2, 2nd point to 4.87-7.1, 3rd point 5.0-7.0 individually. Average pH value was decreased during small rainfall, the rainfall amount was directly related to pH in every points. Frequency ratio of pH below 5.6 in each point were resulted to 75% at 1st point, 73% at 2nd point, 42% 3rd point.