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만경강 및 동진강 하상 퇴적물의 중금속 함량과 분포 특성
조영길,장진호 목포대학교 기초과학연구소 2000 基礎科學硏究誌 Vol.18 No.-
Twenty-two sediment samples collected from the Mangyung and Dongjin river bed were analysed for Al, Fe, Mn, Co, Cr, Cu, Ni, Zn and Pb to recognize the extent of contamination. Results showed that a wide range of concentrations was apparent for every metal in both rivers. These variations were particularly significant at the confluence of tributaries. Aluminium normalization of Fe, Co and Ni concentrations indicates that they are at or near natural levels as a result of natural granular and mineralogical variability in the sediments. High levels of Mn, Cr, Cu, Zn and Pb, however, occur in the confluence of tributaries. Downstream profile and metal/Al ratios indicate that pollutant inputs from the tributaries are mainly responsible for enrichment of heavy metals in bed sediments of the Mangyung River.
전수경,조영길 한국환경과학회 2002 한국환경과학회지 Vol.11 No.12
Thirty sediment samples of the <63㎛ fraction collected from the southwestem coast of Korea were analysed for their heavy metal (Fe, Mn, Cr, Co, Cu, Ni, Zn and Pb) concentration. The results show that sediment texture plays a controlling role on the total metal concentrations and their spatial distribution. A single IM HCI extraction procedure was used in order to assess the environmental risk of heavy metals in bottom sediments. The non-residual fraction was the most abundant pool for Mn and Pb in most samples, which means that this metals are highly avaliable in these sediments. Cr, Ni, Fe, Co, Zn and Cu were mainly associated with the residual fraction, suggesting that their concentrations are controlled significantly by transport processes with the fine particles as carriers from diffuse pollution source. Concentration raitos(CER) were calculated from the non-residual contents and their values allowed us to classify the sediments according to their environmental risk.
한국 서해안의 곰소만 갯벌 퇴적층: 퇴적환경, 층서 및 현세 해수면 변화
장진호,조영길 목포대학교 기초과학연구소 2000 基礎科學硏究誌 Vol.18 No.-
Intertidal deposits of Gomso Bay, western coast of Korea(eastern Yellow Sea) consist of basement, pre-Holocene oxidized unit, and Holocene tidal unit in ascending order. The pre-Holocene oxidized unit, a yellowish stiff mud belonging to the last stadial (or glacial) stage before 12,000 yr B.P., contains plant roots, plant fragments, and vertical and horizontal microfractures indicating soil-formation. However, it contains no marine shells or microfossils. The Holocene tidal unit is composed of lower mud facies (upper-flat mud) and upper sand/muddy sand facies (middle- to lower-flat sand), and generally shows a coarsening-upward, retrograding trend, thus reflecting a Holocene relative sea-level rise. 14C age/depth plot for dated samples (peats and shells) shows that the relative sea-level of 7,000 yr B.P. stood at about -6.5 m from the present mean sea level, and the relative sea-levels of 4,000 yr B.P. and 2,000 yr B.P. stood at -3 m and -2.5 m, respectively.
Metals in Coastal Sediments Adjacent to the Youngkwang Nuclear Power Plant, West Coast of Korea
Cho, Yeong-Gil,Yang, Sung-Ryull,Park, kyung-Yang The Korean Society of Oceanography 1997 Journal of the Korean Society of Oceanography Vol.32 No.3
Coastal sediments collected near the Youngkwang Nuclear Power Plant were analysed for major(Al$_2$O$^_3$, Fe$^_2$O$^_3$, MgO, CaO, Na$^_2$O, K$^_2$O, TiO$^_2$, MnO), trace (Ba, Sr, V, Co, Cr, Cu, Ni, Zn, Pb) metal, and P$^_2$O$^_5$ contents. The composition of bulk metals from most stations fits within the range as those in the average crustal and sedimentary rocks, suggesting that the anthropogenic perturbation of these components is insignificant. The abundance and distribution of total contents for the majority of metals in the surface sediment could be explained by the grain size and were associated with mud (<63 ${\mu}$m) contents. However, distributions of Ca, K, Sr and Ba did not have any significant association with the sediment grain size. This may be due to the geochemical coherence among these metals in certain minerals abundant in coarse grained fractions. The distribution of Pb appears to be partly affected by the contribution from aerosol fallout. Using the R'-mode factor analysis, we show that the variance of the metal contents could be explained by four factors which account for 93.7% of the total variance. It appears that texturally controlled and/or sorting factors influenced by fine fraction are the most dominant factors which determine the relative abundance and distribution of metals in the study area.
조영길,김주용 한국환경과학회 1998 한국환경과학회지 Vol.7 No.3
Thirty-eight sediment samples collected from the Youngsan River channel were analysed for Fe, Mn, Co, Cr, Cu, Ni, Zn and Pb to recognize the extent of contamination. Results showed that a wide range of contents was apparent for every metal over the study area. These differences have been mainly related to the textural variability of sediments. Exceptions to this were found in the contents of Cu, Zn, Pb and possibly Mn. The contents of Cu, Zn, Pb and Mn were particularly higher in the sediments from the confluence of tributaries. Downstream profile of metal/Al ratios indicates that pollutant inputs from the Kwangju tributary are mainly responsible for enrichment of these metals in bed sediments of the Youngsan River.