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2001년 11월 오염시기와 2002년 봄 황사시기 제주도 고산에서의 잔류성 유기오염물질 농도 변화
김영성,김진영,김연제,문길주,문광주,한진석,김상우,윤순창,권성안 한국대기환경학회 2003 한국대기환경학회지 Vol.19 No.5
Atmospheric concentrations of persistent organic pollutants (POPs) were measured at Gosan, Jeju in November 2001 and spring 2002, each time for two weeks. Primary target pollutants were organochlorine pesticides, coplanar polychorinated biphenyls(co-PCBs), and dioxin/furans listed in the Stockholm Convention adopted in May 2001. Polycyclic aromatic hydrocarbons (PAHs) were also measured in order to understand the overall characteristics of the POPs distribution as well as PM_(2.5), a potent carrier of POPs. In the latter part of the measurement period of November 2001, almost every pollutant of combustion origin including dioxin/furans went high probably due to influence of emissions in the nearby area. The characteristics of atmospheric environment at Gosan in this period were rather close to urban areas far from those of a background area. A severe dust storm swept for three days at the end of the measurement period of spring 2002. However, changes in pollutant concentrations were relatively small except PM_(10-). Nevertheless, increases in particulate PAHs and OCDD(octachlorinated dibenzo-p-dioxins), mostly present in fine particles, were observed. Trends in organochlorine pesticide variations were mixed although possible volatilization of DDT residues from soil was inferred from the measurements of spring 2002.
김진영,김영성,원재광,윤순창,우정헌,조규탁 한국대기환경학회 2005 한국대기환경학회지 Vol.21 No.1
Lake Paldang is a main resource of drinking water for 20 million people in the greater Seoul area. Dry deposition amounts of nitrogen and sulfur were estimated for three typical days in each season over the watershed of Lake Paldang. Models-3/CMAQ (Community Multiscale Air Quality) and MM5 (Mesoscale Model) were used to predict air quality and meteorology, respectively. Aerosols as well as gaseous pollutants were considered. Nitrogen was mainly deposited in the form of HNO₃ while most of sulfur was deposited in the form of SO₂. Contribution of secondary pollutants was the largest in fall since they were transported from the greater Seoul area. However, contribution of secondarily-formed particulate pollutants to the nitrogen deposition was the largest in winter because semi-volatile ammonium nitrate favors lower temperature. Annual deposition amounts of nitrogen and sulfur were 37% and 26% of their emission amounts, respectively, over the watershed of Lake Paldang. Higher value of the nitrogen deposition showed a more influence of pollutants emitted in the greater Seoul area.
1999년 4월부터 2000년 6월까지 황해 덕적도에서 관찰된 대기오염물질 변화 특성
김영성,이승복,김진영,배귀남,문길주,원재광,윤순창 한국대기환경학회 2003 한국대기환경학회지 Vol.19 No.4
Sulfur dioxide (SO₂), ozone, total suspended particulates (TSP) and PM_(2.5) were measured at Deokjeok Island in !he Yellow Sea during April 1999 to June 2000. Although the emission amount of air pollutants is quite low in this small island of 36 km² with 1.4 thousand inhabitants, there are pollutant m e s such as an oil-firing power plant and a wharf for ferryboal. The island is also influenced from the emissions from the greater Seoul area in the east and from China in the west. In order to characterize the pollutant variations due to interactions between transport and local emissions, the correlation between variations of SO₂and ozone was investigated. Mass and ion concentrations of TSP and PM_(2.5) were examined on selected episode days of positive and negative correlations between the two gaseous species in spring and winter. The effects of transport were pronounced on the days of positive correlation in spring with higher concentrations of ozone and PM_(2.5). TSP concentrations were also high on these days because of high wi d speeds. On the days of negative correlation in spring, frequent fag associated with low wind speeds facilitated SO₂oxidation and increased sulfate accompanied with decrease in nitrate in PM_(2.5) and chloride in TSP. This latter phenomena was noticeable since it showed that chemical composition of fine panicles could be significantly altered nut only during the transport but also by local environment.