대전시 노은 도매시장 채소류의 농약 잔류 실태 및 식이섭취량 추정

한국탁,이규승,이은경,이용재,고광용,원동준,이정원,권순덕 한국환경농학회 2003 한국환경농학회지 Vol.22 No.3

대전시 노은 도매시장에서 채취한 6종의 채소류 중 농약잔류량을 조사한 후 이에 대한 위해성 평가를 실시하였다. 전체 100건의 분석시료 중 농약이 검출된 시료의 비율은 46.0%이었고, 잔류허용기준 초과비율은 6.0% 이었다. 검출비율이 높은 시료는 상추(85.0%), 깻잎(80.0%), 오이(60.0%) 순이었고, 상추 3건, 깻잎 3건이 허용기준을 초과하였다. 살균제는 dicar-boximide계, 유기염소계, azole계 농약, 살충제는 유기인계, 합성 pyrethroid계 농약이 많이 검출되었다. 검출빈도가 높은 성분은 procymidone, chlorpyrifos, chlorothalonil, cypermethrin, EPN의 순이었다. 위해성을 평가하기 위해서 각 농작물에 대한 농약의 추정 섭취량과 ADI를 비교한 결과, 허용기준을 초과한 깻잎의 bitertanol, triflumizole, iprobenphos가 다른 성분에 비하여 높은 비율을 보였다. 그러나 각 농산물의 식이섭취량이 적어 ADI에 대한 추정섭취량의 비율이 0.46%이하로 나타나 그 영향이 매우 낮은 것으로 판단되었다. Pesticide residues in some vegetables collected at Noeun wholesale market in Daejeon were surveyed and assessed their risk In 100 samples, the detection rate of pesticide was 46.0% and the rate exceed MRL was 6.0%. Commodities showing high detection rate were lettuce(85.0%), perilla leaf(80.0%) and cucumber(60.0%). Dicarboximide, organochlorine, and azole fungicides and organophosphorus and pyrethroid insecticides were detected. Detection frequency of pesticide was in the order of procymidone, chlorpyrifos, chlerothalonil, cypermethrin and EPN. When the estimated intake amount of the pesticides were compared with ADI to assess their risk, bitertanol, triflumizole and iprobenphos in perilla leaf were higher rate than the other vegetables. However the total amounts of intake of pesticides were estimated to less than 0.46% of ADI.

Kinematic Wave 모델에 의한 河川流域의 水理學的 洪水追跡에 관한 硏究

李舜鐸,李永禾 嶺南大學校工業技術硏究所 1992 연구보고 Vol.20 No.2

The purpose of this study is to develop a suitable hydraulic flood routing algorithm in river basin. The Kinematic wave model is analyzed for the hydraulic flood routing and the solution of it is obtained by an analytical or a numerical solution. The analytical solution limits at the actual application for a limited hypothesis. The numerical solution analyzes the explicit or the implicit method as a finite difference scheme, needs a many calculation time. Therefore, the hybird method which is obtained by adjusting the faults of the analytical or the numerical methods analyzes a flood routing in river basin. And the results shows that the hybird method is a suitable flood routing model in river basin.

河川 汚濁의 豫報를 위한 水質의 推計學的 Simulation에 관한 硏究

李舜鐸 嶺南大學校 環境問題硏究所 1981 環境硏究 Vol.1 No.1

In this paper, a stochastic model of stream water quality is developed for the long range pollution prediction. BOD,DO,COD and temperatur data collected from the Han river and the Nakdong river are analyzed, and their stochastic characteristics are used in the mathematical model and simulation.

水質改善을 위한 河川維持用水 決定

李舜鐸,張仁洙 嶺南大學校 工業技術硏究所 1990 연구보고 Vol.18 No.1

This Study aims at the determination of river maintenance flow for water quality improvement. In the results of analysis, lowflows are 27.2, 1.8 and 1.0 CMS at Waekman, Dongchon and Milryang gauging station in and around Geumho river respectively. BOD concentrations are 13.67 and 119.77㎎/ℓat Donhchon gauging station and Geumho river estuary respectively, and these are higher than the permissible limit of water quality. Geumho river basin is divided into 16 subbasins, and water demand and return flow for the future are calculated. Lowflows are estimated as the results of water budget analysis. Lowflow for each water quality criterion and environment flow(Qr), water quality improvement flow(Qe), utilization flow(Q) and river management flow(Qm) for the environmental standard of Dongchon gauging station and Geumho river estuary are estimated. As the seculity plan of river maintenance flow in Geumho river and Shin stream, the water resources development project of 1.6×10^6㎥/day is suggested at Nakdong intake station, Woonmoon dam, Gilan dam, Yeuncheon dam and Bujo intake station etc.

洪水流出 Simulation모델의 媒介變數 變化特性에 따른 流出特性 硏究

李舜鐸,安勝燮 嶺南大學校工業技術硏究所 1992 연구보고 Vol.20 No.2

The application of the SSARR model to any particular watershed depends largely on the development of parameter relationships. Parameter relationships are usually established by reconstituting historical streamflow records often with sparse input data. In this study, it has been estimated model parameters which required to flood runoff analysis using the SSARR Model. As it has been examined runoff characteristic through the variety of runoff simulation model parameter, it will be determined optimal parameters required to the runoff analysis of riber basin. The major results of this reserch can be summarized as follows; 1) As the results of the watershed runoff parameters, SMI-ROP, RGS-RS and BII-BFP are sensitive to the runoff hydrograph shape and peak time. But KE-RI relationship curve is not affected to it. 2) As the results of the streamflow parameters, Phase No., KTS and n are sensitive to the peak time, different from watershed runoff parameters.

河川流域에서의 SED 降雨-流出모델

李舜鐸,趙顯景 嶺南大學校 工業技術硏究所 1995 工業技術硏究所論文集 Vol.23 No.2

This study aims at the development of rainfall-runoff model for analyzing runoff phenomenon in river basins. The model which is used at the analysis are SED(Storage-Effective Drainage) Model in nonlinear model. The parameters was calculated by regression equation and trial and error method. In this study, it was applied SED Model to analysis on the six self-recording stations in the Wi stream watershed in Nakdong river. And it gives good results in stream phenomenon decreasing the physical uncertainties of runoff process.

개구리 剔出 心房을 利用한 몇 가지 實驗

李淳卓 全南大醫大 1965 전남의대학술지 Vol.2 No.1

河川流域特性 因子의 單位流量圖에 미치는 영향

李舜鐸,安勝燮 嶺南大學校 工業技術硏究所 1987 연구보고 Vol.15 No.2

This study aims at the analyses of Flood runoff characteristics for small river basins by hydro-geomorphologic and storm parameters. In this paper, a study of the runoff characteristics of small river basins in Wi-Stream basin of Nak-Dong river is reported in which the variation of flood runoff volume and unit hydrograph shape is analysesed with respect to storm and basin characteristics. The results are based on the characteristics of rainfall, runoff hydrographs and basin conditions for storm enents between 1984 and 1986 on six basins in the Wi-Stream basin. Analysesed regration models in this study can be used to predict streamflow hydrographs on ungaged basins of similar types.

非線型函輸系의 豫測流出模型에 關한 硏究

李舜鐸,李장雨 嶺南大學校 工業技術硏究所 1986 연구보고 Vol.14 No.2

This study aims at the development of predicted runoff model by non-linear functional series in rainfall-runoff relations. An analytical non-linear response function model has been applied by Meixner function expansion involving higher order nonlinear generalizations. This procedure was successfully tested in a Wi-stream watershed to establish rainfall-runoff processes. The existing program requires that the user specify the values of four parameters used in the model. The watershed responses derived by the non-linear runoff model demonstrated high sensitivity to input data and predicted the runoff closely.

洛東江流域에서의 低水流出 시뮤레이션 모델

李舜鐸,朴埼鎬 嶺南大學校 工業技術硏究所 1993 工業技術硏究所論文集 Vol.21 No.1

Nowadays, there is a Tank Lowflow Simulation Model in Nakdong River Basin. The major purpose of this study was to develope enhenced Lowflow Simulation Model in that area. Therefore the advanced Lowflow Simulation Model was designed which is based on existing Tank Model. And also the new model was combined with Discrete Differencial Dynamic Programming Model. They are called as Lowflow Management Model with Tank Dynamic Programming(LFMM-TKDP) and Lowflow Management Model with SSARR Dynamic Programming(LFMM-SRDP). As a result of applying a LFMM-TKDP and LFMM-SRDP to the Nakdong River Basin, there is an improvements to supply water at dry period in compare with existing Model.