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한국 연안 이매패류에 잔류하는 PBDEs 및 OCs에 관한 연구
민병윤,Min, Byung-Yoon 한국환경보건학회 2010 한국환경보건학회지 Vol.36 No.2
Bivalve samples from 30 locations Korean coastal waters were analyzed to characterize the contamination with and distribution of polybrominated diphenyl ethers (PBDEs), polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs). The congeners of PBDE in 30 bivalve samples were analyzed by high resolution gas chromatography with a high resolution mass detector. The levels of PBDEs in bivalve samples ranged from 0.092 to 13.5 ng/g wet weight. These values for PBDEs concentrations in bivalves from Korea were higher than or comparable to available values for bivalves from other countries. In the congener profiles, BDE-47 (mean contribution=42.2%) was predominant, followed by BDE-99 (23.1%), BDE-100 (11.9%) and BDE-154 (3.5%). Among the OCs analyzed, $\Sigma$PCBs and $\Sigma$DDTs levels were highest, followed by $\Sigma$HCHs, $\Sigma$CHLs and HCB. The wet weight based $\Sigma$PCBs and $\Sigma$DDTs ranged from 0.28 ng/g to 19.4 ng/g, and from 0.19 ng/g to 4.86 ng/g, respectively. The $\Sigma$PCBs and $\Sigma$DDT slevels in bivalves along the entire Korean coast were lower than those of the USA, and below the Food and Drug Administration (USA. FDA) limits for fish and shell fish. However, the human health criteria and wild life criteria of the USA. Environmental Protection Agency (USA. EPA) were exceeded for DDE and $\Sigma$HCHs at most of the sampling points.
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민병윤,손성원,이호원 경남대학교 환경문제연구소 1987 환경연구 Vol.9 No.-
1985년 9월부터 1986년 7월까지 경상남도 마산시와 통영군에서 관박쥐 및 긴날개박쥐를 채집하여 박쥐 체내에 잔류하는 유기염소화합물 (PCB, BHC, DDT)의 농도를 조직 (간, 흉근, 잔해)별로 측정한 결과 전 개체로부터 이들 화합물이 높은 농도로 검출되었고, 이로부터 이들 화합물의 강한 잔류성이 시사되었다. 또한 검출된 화합물의 농도는 박쥐의 종류 [관박쥐 (평균), PCB(0.25 ppm) > BHC(0.19 ppm) > DDT(0.05 ppm) ; 긴날개박쥐 (평균), DDT(1.97 ppm) > BHC(1.63 ppm) > PCB(0.30 ppm) > 및 조직부위 [관박쥐, 잔해 (0.70 ppm) > 간 (0.40 ppm) > 흉근(0.37 ppm) ; 긴날개박쥐, 잔해 (5.61 ppm) > 흉근(4.96 ppm) > 간 (1.12 ppm)]에 따라 달랐으며 이는 이들 화합물외 사용 형태, 물리화학적성질 및 박쥐류의 서식환경, 식성과 생리등에 의해서 결정됨이 시사되었다. Residue levels of PCBs, BHC isomers and DDT compounds were examined in two species of bats, the greater horseshoe bat, Rhinolophus ferrumequinum korai and the long-fingered bat, Miniopterus schreibersi fuliginosus, collected from Masan City and Tongyoung-gun in Korea during the period from September 1985 to July 1986. From the high residue levels of the organochlorine compounds in the two species, prolonged persistency of these compounds were suggested. Further, the difference in contaminant levels in the two species (R.f.korai, PCB 0.25ppm > BHC 0.19ppm > DDT 0.05ppm; M. s. fuliginosus, DDT 1.97ppm > BHC 1.63 ppm > PCB 0.30 ppm) and in the tissues examined (R.f. korai, carcass (). 70ppm > liver 0.40ppm > breast muscle 0.37ppm ; M. s. fuliginosus, carcass 5.61ppm > breast muscle 4.96ppm > liver 1.12ppm) seemed to be due to the disparity in uses and physio-chemical properties of the compounds, and in habitat, food and physiology between the two species.
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하천 세굴심 산정을 위한 교각 세굴심 산정식의 적용성 검토
민병윤,장형준,이호진,김성덕,Min, ByungYun,Chang, HyungJoon,Lee, HoJin,Kim, SungDuk 한국방재안전학회 2019 한국방재안전학회 논문집 Vol.12 No.1
교량을 건설함에 있어 물의 흐름에 영향을 받는 교량 하부 구조물에 대한 토질 및 구조역학적 기초 분석은 충분하지만 수리현상으로 발생하는 세굴의 안정성 검토는 미흡한 실정이다. 또한 교각세굴심 산정에 있어 해외 교각세굴심 산정식을 활용하고 있기에 국내 하천의 유역 특성을 반영한 교각세굴심을 정도 높게 산정하는데 미흡하다. 본 연구에서는 현재 우리나라 하천설계 기준에 적용되고 있는 CSU(1993)공식 뿐만 아니라 세굴심 산정에 있어 불확실성을 고려하기 위하여 다른 교각 세굴심 산정식을 추가로 적용하여 세굴심을 산정한 후 각각의 공식들 간에 적용성을 검토하였다. 검토 결과 기존 사용되고 있는 9개의 교각세굴심 산정식으로 산정된 교각 세굴심 깊이와 수리 모형실험을 바탕으로 측정된 세굴심과 비교하였을 경우 SSE(%)는 최소 2.08%, 최대 91.23%, SSEn(%)은 최소 0.19%, 최대 415.91%의 차이를 보이고 있음을 확인하였다. 그 결과, 교각세굴심 산정식 간에도 많은 차이가 있음을 확인하였다. 본 연구의 결과는 향후 하천설계에 있어 정도 높은 세굴심을 산정함에 활용할 수 있을 것으로 기대된다. The basic analysis of Soil and structural mechanics for the bridge substructure affected by the flow of water is sufficient in the construction of such bridges, but the stability of scour resulting from hydraulic phenomena is insufficient. In addition, it is not enough to estimate the scour depth of the bridge which reflects the watershed characteristics of the domestic river because it uses the formula for calculating the scour depth of the overseas piers in calculating the scour depth of the bridge. In this study, the application of the CSU (1993) formula, which is currently applied to the national river design criteria, was reviewed between the two formulas after calculating the scour after calculating the scour by applying another bridge deck scour calculation formula to take into account the uncertainty in the calculation of scour. In this study, in addition to the CSU (1993) formula, which is currently applied to Korean river design criteria, another scour depth calculation formula is applied to calculate uncertainty in scour depth calculation, was reviewed between the two formulas. The review confirmed that the SSE (%) showed a difference of at least 2.08%, up to 91.23%, and SSEn(%) at least 0.19%, up to 415.91%, when compared to the measured depth of the pier based on the hydraulic model experiment and the depth of the pier calculated with the nine scour depth formulas in use. In other words, it is confirmed that there are many differences between the scouring formulas of piers. The results of this study are expected to be used to estimate scour depth in future river design.
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閔丙允 경남대학교 환경문제연구소 1985 환경연구 Vol.7 No.-
Residue levels of PCBs, DDT and its metabolites and BHC isomers were examind in 20 species of wild birds collected from Korea. PCB, ΣDDT (DDE+DDD+DDT) and ΣBHC (α+β+γ+δ-BHC) concentrations were within the range of 0.00 to 1.28ppm, 0.00 to 1.78ppm and 0.00 to 0.93ppm, respect-ively. It indicates that PCBs and DDT compounds are more accumulative than BHC isomers in birds. PCB compounds composed of three to nine chlorine atoms were detected in the wild birds, and which contained mainly the compounds with six and seven chlorine subst-itution. Of BHC isomers α, β,γ and δ-BHC were detected, but γ and δ-BHC were below detection level (<0.04ppm). The composition of ΣDDT were found in the order of DDE>DDD>DDT.
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