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수용모델을 이용한 서울지역 미세입자 (PM<sub>2.5</sub>)에 영향을 미치는 배출원 특성에 관한 연구
이학성,강충민,강병욱,이상권,Lee Hak Sung,Kang Choong-Min,Kang Byung-Wook,Lee Sang-Kwun 한국대기환경학회 2005 한국대기환경학회지 Vol.21 No.3
The purpose of this study is to study the $PM_{2.5}$ source characteristics affecting the Seoul area using a chemical mass balance (CMB) receptor model. This study was also to evaluate the $PM_{2.5}$ source profiles, which were directly measured and developed. Asian Dust Storm usually occurred in the spring, and very high $PM_{2.5}$ concentrations were observed in the fall among the sampling periods. So the ambient data collected in the spring and fall were evaluated. The CMB model results as well as the $PM_{2.5}$ source profiles were validated using the diagnostic categories, such as: source contribution estimate, t-statistic, R-square, Chi-square, and percent of total mass explained. In the spring months, the magnitude of $PM_{2.5}$ mass contributors was in the following order: Chinese aerosol $(31.7\%)>$ secondary aerosols ($22.3\%$: ammonium sulfate $13.4\%$ and ammonium nitrate $8.9\%)>$ vehicles ($16.1\%$: gasoline vehicle $1.4\%$ and diesel vehicles $14.7\%)>$biomass burning $(15.5\%)>$ geological material $(10.5\%)$. In the fall months, the general trend of the $PM_{2.5}$ mass contributors was the following: biomass burning $(31.1\%)>$ vehicles ($26.9\%$: gasoline vehicle $5.1\%$ and diesel vehicles $21.8\%)>$ secondary aerosols ($23.0\%$: ammonium sulfate $9.1\%$ and ammonium nitrate $13.9\%)>$ Chinese aerosol $(10.7\%)$. The results show that the $PM_{2.5}$ mass in the Seoul area was mainly affected by the Chinese area.
미세입자(PM_(2.5))의 배출원 구성물질 성분비 개발에 관한 연구
이학성,강충민,강병욱,이상권 한국대기환경학회 2004 한국대기환경학회지 Vol.20 No.3
The purpose of this study was to develop the PM_(2.5) source profiles, which are mass abundances (fraction of total mass) of a chemical species in PM_(2.5) source emissions. The source categories studied were soil, road dust, gasoline and diesel vehicles, industrial source, municipal incinerator, coal-fired power plant, biomass burning, and marine. The chemicals analyzed were ions, elements, and carbons. From this study. soil source had the crustal components such as Si, AI, and Fe. In the case of road dust, Si, OC, Ca, Fe had large abundances. The abundant species were SO₄^(2-), Cl^(-), NH₄^(+), and EC in the gasoline vehicle and EC, OC, Cl^(-), and SO₄^(2-) in the diesel vehicle. The main components were SO₄^(2-), S, NH₄^(+), and EC in the industrial source using bunker C oil as fuel. ^(-), NH₄^(+), Fe, and OC in the municipal incinerator source, and Si, Al, SO₄^(2-), and OC in the coal-fired power plant source. In the case of biomass burning, OC, EC, and CI- were mainly emitted. The main components in marine were Cl^(-), Na^(+), and SO₄^(2-).
육철,강충민 永同大學校 2000 硏究論叢 Vol.6 No.1
Honey comb에서 분리한 Trichosporonides sp. 의 최적 생산성 조건을 구하기 위하여 에리스리톨 생산에 영향을 미치는 인자들을 결정하고 각각의 인자의 수준을 설정하여 직교배열법을 이용한 최적조건을 구하였다. Trichosporonides sp.는 포도당 농도 40%까지 정상적인 생육을 보였으나 포도당 농도가 20% 일 때 가장 좋은 에리스리톨 생산성을 보였으며 산소전달속도에 따라 생산성이 현저하게 변하였다. 직교배열표 L27(313)을 이용하여 구한 배양 최적조건은 yeast extract 0.45, KNO3 0.3%, 포도당 20%, 배양온도 34℃로 나타났으며, 이 조건에서 Trichosporonides sp. 는 에리스리톨을 0.74 g/L/h의 속도로 생산하였다. 그리고 이 값은 실험계획법에 의한 최적조건에서의 예측치 (0.7231 g/L/h)와 잘 일치하였으며 3회 반복 실험한 결과 95% 신뢰구간에서도 유의한 것으로 판명되었다. Tables of orthogonal arrays were used to find out optimum condition for production of erythritol by Trichosporonides sp. isolated from honey comb. Trichosporonides sp. grew normally even at the concentration of 40% of glucose and showed the best productivity of erythritol at the concentration of 20%. From the tables of orthogonal arrays, L27(313), 27 conditions were selected and tested. The optimum conditions for temperature and concentrations of yeast extract, KNO3 and glucose were 34℃ , 0.4%, 0.3% and 20%, respectively. The productivity of erythritol at the condition was 0.74 g/L/h which was very close to estimated value(0.7231 g/L/h). It was confirmed with 95% confidence by 3 repeated experiments.
黃敬喆,姜忠旻 동남보건대학 2002 論文集-東南保健大學 Vol.20 No.1
The carbon component of the suspended particulates was analyzed and the DRI model was applied to evaluate the contribution of PCC on visibility and smog phenomena in Seoul area. The results of this study are as follows: It was analyzed that the light absorption in PCC was mainly conducted by EC and the light scattering by OC. Also in the calculation on the contribution of PCC to visibility reduction. the annual average contribution rates of EC and OC were 11.4% and 20.4% respectively and it was confirmed that the visibility reduction was mainly contributed by OC. The annual average contribution rate of TC, the sum of EC and OC, was 31.7%. So it was found out that PCC was the main source for visibility aggravation in Seoul area.