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이민도(Min-Do Lee),김소영(So-Young Kim),김종춘(Jong-Chun Kim),김영환(Young-Hwan Kim),서석준(Suk-Joon Seo),김수연(Soo-Yeun Ki),손정석(Jung-Suk Son),박지훈(Ji-Hoon Park),임용재(Yong-Jae Lim) 한국환경관리학회 2011 環境管理學會誌 Vol.17 No.3
In this study, various techniques for measurement and analysis of PAHs in the ambient air were verified in order to select a more reliable method. Sampling and analysis of PAHs were done by the EPA TO-13a method. QA/QC of the measurement was conducted to minimize errors in sampling and analyzing processes. The linearity of calibration curve of the PAH standards was good (R²=0.99). Audit accuracy was evaluated using 5 internal standards of PAHs (Naphthalene-d8, Acenaphthene-d₁?, Phenanthrene-d₁?, Chrysene-d₁₂, Perylene-d₁₂). Relative standard deviations of the internal standard of the PAHs were ranged from 1.48% for D8-naphthalene to 7.46% for D10-Phenanthrene. The detection limit of benzo(a)pyrene among 16 PAHs standards for quantitation was 15.11 pg.
환경기초시설의 악취물질 배출특성 : 5개 시설(하?폐수, 축산?분뇨 및 음식물) 처리장 중심으로
전준민(Jun-Min Jeon),서윤섭(Yun-Seob Seo),정만호(Man-Ho Jeong),이학성(Hak-Sung Lee),이민도(Min-Do Lee),한진석(Jin-Seok Han),강병욱(Byung-Wook Kang) 한국냄새환경학회 2010 실내환경 및 냄새 학회지 Vol.9 No.2
본 연구는 5개 업종의 환경기초시설 중 대표적으로 관리가 우수하거나 미흡한 시설을 각 1개씩 선정하여 악취배출 특성을 파악하고, 시설별?공정별 주요 악취원인물질을 도출함과 아울러, 미흡시설에 대한 적합한 악취저감 및 관리방안을 제안하는데 있다. 연구결과 주요 내용은 다음과 같다. 기초시설별 부지경계선에서 보인 직접 관능도(air direct sensory) 및 복합악취(air dilution value)는 J음식물자원화시설이 다른 기초시설에 비해 높았으며, 복합악취는 391배로서 악취방지법의 배출허용기준(15배)을 초과하고 있었다. 기초시설 중 미흡시설로 구분된 시설들의 직접관능도 및 복합악취는, 음식물자원화 > 축산폐수 > 하수 > 분뇨 > 폐수처리시설 순으로 높게 나타났으며, J음식물자원화시설은 모든 공정에서 매우 강한 취기로서 직접관능도 5도, 복합악취는 1,800∼10,000배 범위로서 악취방지법상 배출허용기준(500배)을 초과하였다. 기초시설별 악취배출 특성 및 주요 악취원인물질은, 하?폐수처리시설 경우 1차침전지 및 농축조에서 복합악취도가 높았고, 황화합물과 알데하이드류 성분들이 주요 악취원인물질로 나타났으며, 축산?분뇨처리시설은 저류조 및 액상부식조에서 복합악취도가 높았고, 황화합물과 암모니아 성분이 주요 악취물질로 검출되었다. 음식물자원화시설은 다른 시설에 비해 전 공정에서 높은 복합악취를 보였고, 황화합물 및 아세트알데하이드 물질이 주요 악취원인물질로 작용하고 있었다. This study was conducted to show the odor emission characteristics between the well maintained environment fundamental facility and the poorly maintained environmental facility. It also draws major components of odor emission based on facilities, stages, and suggest the proper way to reduce the level of odor for insufficient facilities. Insufficient facilities' air direct sensory and air dilution value levels are following: foodwaste > livestock > wastewater > night-soil > sewage. For the sewage and waste water facilities, the common characteristic of odor emission on each fundamental facility showed higher air dilution value in depositing reservoir and concentrator. And sulfur and aldehyde compounds came out to be the major odor causing components. In the case of night-soil and livestock facilities, the air dilution value was high in flow equalization tank and liquid erosion tank. And sulfur as well as ammonia component was the major malodorous substance. Foodwaste facility showed higher air dilution value than other facility, which sulfur and acetaldehyde compounds were acting as major malodorous substances.
KZ 필터법을 이용한 서울지역 미세먼지 농도의 장기변화 분석
이정영(Jung-Young Lee),공부주(Boo-Joo Kong),한진석(Jin-Seok Han),이민도(Min-Do Lee) 한국대기환경학회 2008 한국대기환경학회지 Vol.24 No.1
Local meteorological conditions exert a strong influence over day-to-day variations in air pollutant concentrations. Therefore, the meteorological fluctuations have to be removed in order for air quality planners and managers to examine underlying emissions-related trends and make better air quality management decisions for future. In this study, the meteorologically adjusted PM₁? trends in Seoul are investigated over the period 1999~2006 using Kolmogorov-Zurbenco (KZ) filter. The result indicated that meteorological variability accounts for about 25% of PM₁? variability. Both the meteorologically adjusted and unadjusted long-term daily PM₁? concentrations had a significant downward trends and the difference between the meteorologically adjusted and unadjusted was small. So it was assumed that in long-term daily PM₁? changes, localized changes in emissions is more important than the changes caused by meteorological conditions.
송준상(Jun-sang Song),이길철(Kil-Chul Lee),전성환(Sung-Hwan Chun),이민도(Min-Do Lee),조경희(Kyung-Hee Cho) 유기성자원학회 1993 유기물자원화 Vol.1 No.2
본연구는 분뇨처리장과 제지폐수 처리장에서 발생된 유기성 슬러지를 지렁이 먹이로 활용하고 지렁이가 배설한 분변토(떠st) 를 유기질비료, 토양개량제로 재활용하여 폐기처분되어야 하는 유기성 슬러지를 자원화하는 기술을 개발하는 것으로 폐기물 재활용의 일익을 담당할 수 있을 것으로 사료된다. 분변토의 비효성조사를 위해 오이, 토마토, 배추 3가지 작물의 발아율을 조사한 결과 분변토를 배합하지 않은 대조구에서는 40.7-61. 7%로 발아율이 낮았으나, 30-45% 의 분변토를 배합한 처리구에서 3가지 작물의 발아율이 90% 이상으로 높게 나타났다. 분뇨처리장 슬러지를 지렁이 먹이로 하여 발생된 분변토로 식재한 오이,토마토,배추의 성장후 초장,경경,엽면적,엽수,생체중,건물중,뿌리의 생체중,및 건물중 등 8가지 생육상황을 조사한 결과 15%, 60% 의 분변토를 배합한 처 리구에 비해 30-45% 의 분변토를 배합한 처리구에서 3가지 작물의 성장이 양호한 것으로 나타났다. 제지폐수 처리장 슬러지를 지렁이 먹이로 하여 발생된 분변토로 식재한 오이, 토마토, 배추의 생육상황을 조사한 결과 30-45% 의 분변토를 배합한 처리구에서 3가지 작물 모두 성장이 양호한 것으로 나타났으며,분뇨분변토와는 달리 60% 의 분변토를 배합한 처리구에서도 생육장애가 발생되지 않고 성장이 양호하였다. Objectives in this study are to stabilize the organic sludges which were produced from papermi11 wastewater, nightsoil treatment faci1ities and utilized as foods for earthworm, to find the method for using the cast which was orginated by earthworm as fertilizer, and ultimately to develop the practical technique to solve the environmental problems by optimization of wastes treatment. The results of this study were summarized as follows. In the investigation for fertilizer effect of cast, germination rates of cucumber, tomato, and cabbage were investigated. The germination status of 3 types of plants was excellent as over 90% in the combination case of 30-45 % cast. In the investigation for fertilizer effect of cast derived from nightsoil sludge, the growing status of cucumber, tomato, and cabbage was excellent in the combination case of 30-45 % cast. In the experiment for fertilizer effect investigation of cast derived from papermill sludge, the growing status of cucumber, tomato, and cabbage was excellent in the combination case of 30-45 % cast. AIso, in the combination case of 60% cast, plants growth was not disturbed.
박유미 ( Yu Mi Park ),박진주 ( Jin Ju Park ),이민도 ( Min Do Lee ),허인애 ( In Ah Huh ),유석민 ( Suk Min Yoo ),김은희 ( Eun Hee Kim ),석광설 ( Kwang Seol Seok ),김영희 ( Young Hee Kim ) 한국환경분석학회 2015 환경분석과 독성보건 Vol.18 No.4
Mercury mass balance was investigated in Lake An-dong, located in the upper stream of the Nakdong River, to assess the status of mercury pollution by measuring mercury inputs and outputs of the lake. The parameters for mercury input estimation included atmospheric wet deposition (0.52 kg/yr), dry deposition (0.20 kg/yr), river inflow (16.93 kg/yr) and diffusion from lake sediments (0.64 kg/yr). The mercury inputs totaled 18.29 kg/yr, and 92.5% of this total input was attributed to river inflow from the upper stream. Mercury outputs were measured in evasion (0.14 kg/yr), lake outflow (1.92 kg/yr) and sedimentation (45.77 kg/yr), and the total mercury output was estimated to be 47.83 kg/yr. The imbalance between the inputs and outputs of mercury was 29.54 kg/yr, which suggests that there are other missing inputs of mercury to Lake An-dong such as river input during heavy rainfalls and tributary inflow.
박상진(Sang-Jin Park),김선태(Sun-Tae Kim),이민도(Min-Do Lee),한진석(Jin-Seok Han) 한국냄새환경학회 2010 실내환경 및 냄새 학회지 Vol.9 No.4
본 연구에서는 ASTM이나 CEN의 2점 상승법 대신 3점 하강법을 기초로 하여 우리나라 12개 지정악취물질의 최소감지농도를 산출하였다. 각 악취물질별 최소감지 농도는 Methyl mercaptane, Hydrogen sulfide, Trimethylamine, I-Valeraldehyde의 최소감지농도는 0.0001∼0.001ppm으로 나타났으나, Styrene (1.8 ppm)과 Ammonia (0.04 ppm)는 타 악취물질에 비해 최소감지농도가 비교적 높게 나타났다. 12개 지정악취물질에 대한 최소감지농도를 국 · 내외 연구 결과와 비교한 결과, 물질 및 국가에 따라 다소 상이한 후각 특성을 보였는데, 미국등 서양인의 경우 Acetaldehyde나 Hydrogen sulfide에 대해서는 한국인에 비해 상당히 둔감한 것으로 조사되었고, 일본인의 경우 전체적으로 한국인보다 12개 지정악취물질에 더 예민한 것으로 나타났는데, 이는 후각능력의 차이도 있겠으나 일본의 최소감지 희석배수가 우리나라보다 약 1.5배 높게 산출되는 계산방법에 의한 영향도 있는 것으로 사료된다. This study aims to produce the threshold values of 12 specified offensive odor substances based on the 3 point comparison method instead of the 2 point comparison method of ASTM or CEN. As a result, the threshold values of individual odor substances, including Methyl mercaptane, Hydrogen sulfide, Trimethylamine, and I-Valeraldehyde ranged between 0.0001∼0.001ppm, while the values of Styrene and Ammonia were relatively higher than of other substances at 1.8ppm and 0.04 ppm respectively. The threshold values of the 12 specified odor substances were compared in Korea and overseas, which showed that the characteristics of olfactory response varied by substance and nation. When it comes to acetaldehyde or hydrogen sulfide, western countries, including the United States, tended to quite insensible compared to Koreans. Japanese people were more sensitive in the 12 specified odor substances than Koreans in general, suggesting that it is not only because of its olfactory ability, but because of the calculation method that produces Japan‘s dilution threshold values approximately 1.5 times as high as Korea's.